Huawei H11-879_V2.0-ENU Exam Questions Simulate Actual H11-879_V2.0-ENU Exam

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October 12, 2023

H11-879_V2.0-ENU exam dumps questions are designed to simulate the actual exam. This means that you will get a feel for the types of questions you can expect to see on the exam, as well as the format and difficulty level. In addition, HCIE-Collaboration H11-879_V2.0-ENU dumps are often accompanied by detailed explanations and answers. This means that if you get a question wrong, you can learn from your mistake and understand why the correct answer is the right one. Test free online H11-879_V2.0-ENU exam dumps below.

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1. SMC2.0 supports inspection equipment types including? (Multiple choice)

Recording and broadcasting

MCU

Terminal

2. If a Huawei TE series terminal is used for point-to-point calls and the video-related configurations are set to "Auto", which of the following descriptions is correct?

If the bandwidth is sufficient, 1080P60 format is preferred for the main video.

If the bandwidth is sufficient, 1080P30 format is preferred for the main video.

If the bandwidth is sufficient, 720P60 format is preferred for the main video.

If the bandwidth is sufficient, 720P30 format is preferred for the main video.

3. Regarding the call bill and billing scenarios, which of the following statements is correct? (Multiple choice)

The call record data must eventually be imported into the CDR database.

Users can query the bill data through the Web page of the U1900 unified gateway

In the CDR integrated network, the third-party billing system is used as FTPClient

A single bill server can store and process bill data from multiple IPPBX hosts at the same time

4. Which user can back up the database encryption key of SMC 2.0?

admin

backup

debug

database

5. Regarding the wired sharing method, which of the following descriptions is correct?

Wired sharing mode supports connecting to the computer through the HDMT interface and sharing the computer desktop.

Wired sharing mode supports connecting to the computer through the HD-VI interface and sharing the computer desktop.

After the plug-and-play function of sharing materials is turned on, regardless of whether there are other participants in the conference sharing materials, you need to select the shared materials to the remote participants according to the interface prompts.

After turning on the plug-and-play function for sharing materials, you can share your computer desktop content without any other operations, regardless of whether there are participants sharing materials in the meeting.

6. Regarding the following description of the SMC active and backup dual-machine in a pure intranet scenario, which options are correct? (Multiple choice)

After the SMC master and backup dual-machine configuration is completed, the system will prompt you to change the password when you log in to the SMC as a system administrator for the first time.

When planning IP, a total of 3 IP addresses need to be planned.

172.18.0.0/16 is the SMC internal business network segment. Do not use this network segment address when planning I

Before configuring the SMC master and backup machines, you need to add each other as a mutual trust device on the two SMCs.

7. The range of sound frequencies that the human ear can recognize is?

10~10KHZ

20~20KHZ

30~30KHZ

90~40KHZ

8. In the H.323 protocol, which message used to complete the process of opening a logical channel?

CLC, CLCA

OLC, OLCA

TCSR,TCSA

MSDR,MSDA

9. RSE6500 repackages the corresponding high/standard definition on-demand files and sends them to the conference terminal for viewing through the () protocol.

323

239

RTP

SIP

10. The network diagnostic tool supports remote diagnosis mode, that is, the network diagnostic tool can remotely control another network diagnostic tool to initiate network diagnosis for other network diagnostic tools.

True

False

Page 2 of 37

11. Before applying for an SMC2.0 License, you must first obtain the ESN code.

True

False

12. Video input3 can be used as TE60 auxiliary stream input interface

True

False

13. Video input 2 can be used as the TE60 auxiliary stream input interface, but video input 3 cannot.

True

False

14. In the SIP structured hierarchical relationship, which of the following request messages are mainly included? (Multiple choice)

Request line/response line

Non-INVITE transactions

Message body.

Header field

15. When GK rejects a terminal’s registration request, which of the following messages will be sent?

URJ

ARJ

RRJ

GRJ

16. Among the following protocols, the protocol that can implement video encoding and decoding is ()

225

239

245

261

17. Which of the following options are user roles provided by SMC by default? (Multiple choice)

Program Manager

Conference Manager

Ordinary users

System administrator

18. What is the architecture of SMC 2.0?

C/S

B/S

C/S and B/S mixed

Everything else is wrong

19. When adding CloudRSE through the SMC Web page, the account, password, etc. Which of the following SIP and HTTPS online status are correct.

Enable compatibility configuration on SMC

The inspection and interconnection password configurations on the SMC side and the CloudRSE side are inconsistent.

Enable

323 on CloudRSE

CloudRSE and SMC versions do not match

20. Regarding the relationship between auxiliary streams and H.239, which of the following descriptions is correct?

AH239 is the auxiliary stream

BH239 is an independent protocol processing process and has no connection with other protocols (such as H.323, SIP)

C. In video conferencing, the H.239 protocol specifies all auxiliary stream processing processes

D. Sub-streaming is a service, and H.239 is an interactive protocol used for sub-stream negotiation.

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21. SMC 2.0+VP9650 MCU+TE50 terminal network, manually configure the protocol and format of the conference template to H.264720P30F, but after convening the meeting, it is found that the conference entry protocol and format of all venues are H.264 4CIF. Which of the following inference is reasonable?

The capability of the main venue is set incorrectly. Check whether the capability of the main venue reaches

26472O

Caused by incorrect VP9650 MCU port configuration. Check the VP9650 MCU port configuration.

SMC 2.0 does not import the license, so re-import the valid license.

The account permissions for scheduling the meeting are insufficient. Use the admin account to log in and reschedule.

22. SMC2.0 does not support built-in SC in cluster deployment mode.

True

False

23. TP3206 represents the third generation () six-screen immersive telepresence conference system.

24. Please match the following H.323 terminal control protocols with the transport layer protocols they use.

25. What interfaces does the TE40 backplane have? (Multiple choice)

DVI

HDMI

VGA

SDI

26. The attributes of the message body are described through the Content header field. Content-Length refers to the length of the message body. It is not necessary for TCP but is necessary for UDP.

True

False

27. Huawei's box terminal has a built-in camera, which can capture video images without the need for an external camera.

True

False

28. When deploying automatic version upgrade of eSpace IP phones, which of the following files are required? (Multiple choice)

Version upgrade file in Bin format

Upgrade policy files

Address book

Log files

29. Which of the following signaling messages belong to capability exchange? (Multiple choice)

TCS

TCSA

TCSR

IRR

30. Which of the following SIP message transactions has a three-way handshake?

Invite

Information

Refer

Message

Page 4 of 37

31. The SMC system administrator publishes an announcement on the SMC bulletin board. Which of the following places will the announcement be displayed?

Conference administrator web login interface

Conference administrator portal homepage

Security administrator portal home page

Security auditor portal homepage

32. Which of the following SIP status codes indicates that the called party is temporarily unavailable and the call is in queue waiting for processing?

100

180

181

182

33. Which type of user in SMC2.0 can view and manage conferences convened by other users? (Multiple choice)

Conference Manager

Ordinary users

System administrator

Customize users with conference management rights

34. Which of the following protocols belong to the video codec protocol of the video conferencing system? (Multiple choice)

263

239

728

264

35. Video conferencing requires a light source with a color rendering index greater than which of the following values?

100

150

36. The terminal performs remote audio loopback, and the audio code stream has been encoded and decoded by the remote audio module.

True

False

37. At present, the maximum resolution of the video system can reach (). (Multiple choice)

1280*720

108OP

1920*1080

2560*1440

38. What are the compression and coding methods of audio signals? (Multiple choice)

Predictive coding

Parameter encoding

Waveform encoding

Mixed encoding

39. [Notice] 2015-11-2501:59:55 main 2589173 Null [EXPARA: 11] string: [diagnose][reboot]Reboot MCU at midnight

This log indicates why the MCU restarted?

CPU usage is too high

CPU temperature is too high

Manual Reboot

40. () is a function of the whiteboard. (Multiple choice)

move

Zoom

Erase

write

Page 5 of 37

41. TE HD terminals do not support E1 links.

True

False

42. The terminal needs to determine the media transmission destination address before transmitting video information. Which signaling of H.245 completes this process?

Capability Negotiation

Master-slave decision

Open logical channel

Close the logical channel

43. In Fusion Conference 3.0, how can the conference terminal query the conference list?

eSpace Desktop queries the USM scheduled meeting list through the ECS server.

The eSpace 8950 phone directly queries the conference list reserved in USM through the USM system.

The TE terminal queries the conference list reserved by the USM through the SMC system.

The eSpace 8950 phone queries the USM reserved conference list through the ECS server.

44. When accessing a designated conference through IVR, the IVR unified access number of the 96XX series MCU defaults to ()

168

5000

8000

9000

45. In the recorded meeting, the network recording service records the meeting content and also supports real-time viewing of the meeting through the live broadcast client.

True

False

46. RRJ sendto [(218.5.64.98: 18616)] [59285094444]

[[Ox00000065: err_reg_wrong_account_or_password]]

From the above log, we can see that the possible reasons for registration failure are?

The account password is wrong

Network segment registration restrictions

Network segment bandwidth restrictions

Communication line abnormality

47. 9000 series terminals will report the packet loss rate to the MCU every () by default.

20S

15S

48. Regarding the upgrade of ldeaHub equipment, which of the following statements is incorrect?

ldeaHub does not support upgrading through the upgrade tool.

When upgrading through the upgrade tool that comes with the software package, the upgrade file selected is the .dat file.

After the upgrade file is downloaded, the terminal needs to be restarted to complete the upgrade.

The upgrade operation cannot log in to the Web through the browser that comes with the ldeaHub device to upgrade the device.

49. SMC2.0 supports adding MCU through () (Multiple choice)

Automatic discovery method

Unmanageable mode

Pre-release account method

Manageable way

50. The SMC subsystem includes the file management subsystem for providing FTP services, the conference management subsystem responsible for conference reservations, and the Nginx gateway subsystem.

True

False

Page 6 of 37

51. When performing a one-click conference entry operation, what is the basis for finding the conference list displayed on the terminal?

All scheduled meetings on SM

All meeting templates on SM

All active meetings on SM

All scheduled conferences on the SMC that include the terminal site.

52. Direct sound refers to the sound signal that reaches the listener directly from the sound source. The meeting requirements are mainly direct sound.

True

False

53. In the SIP call process, which of the following SDP negotiation processes are included? (Multiple choice)

Neither carries SDP

Both Invite/Relnvite and final response (2xx) are processed with SDP

Invite with SDP, then 2xx response with Invite with SDP

Invite with SDP, reliable 1xx response with SDP, final 2xx response without SDP

54. The code rate calculation method of the PCM audio stream of the audio signal is the sampling rate value x sampling size value x number of channels.

True

False

55. Under static NAT networking, the packets sent by private network terminals through the firewall will be changed. Which of the following descriptions is wrong?

The terminal RAS addr changes to the address after NAT

The terminal CS addr changes to the address after NAT

NAT addr is the public network exit address of the firewall

GK RAS addr becomes the address after NAT

56. What type of message does the SIP response message 300~399 belong to?

Success

Redirect

Client error

Server error

57. The terminal initiates a calling group conference. In the first step, the terminal sends a conference request to the GK.

True

False

58. Use a Type-C cable to connect the Touch and the power adapter to charge the Touch.

True

False

59. Regarding the configuration of the HD terminal 3G network, which of the following statements is correct?

To configure 3G network parameters, the license of the terminal needs to support the 3G network.

The default IP setting of 3G parameters is static

All 3G card high-definition terminals can be applied

The APN in the 3G configuration parameters is used for all data cards

60. INVITE transaction consists of a three-way handshake. The client transaction sends INVITE, the server transaction sends a response, and the client transaction also sends an ACK.

True

False

Page 7 of 37

61. Diagnosis of peer-to-peer network without public and private network traversal.

True

False

62. () is a dual-stream protocol for video conferencing. (Multiple choice)

235

239

BFCP

225

63. Which of the following descriptions of the SMC2.0 area are correct? (Multiple choice)

The built-in SC of SMC2.0 is divided into two zones by default: defaultEPZone and defaultZone.

The neighbor area refers to the area outside this SC and is mainly used to restrict the communication between nodes registered on this SC and nodes registered on external SCs.

The built-in SC of SMC2.0 can only add one local management domain to manage local nodes.

If SMC2.0 is not configured with a local management domain, all nodes will not be able to register S

64. In the H.323 system, which of the following are the functions of GK? (Multiple choice)

Address translation

Access control

Call management

Regional management

65. Before compression and encoding, one frame of a 1080P image occupies 95Mb of storage space, so what is its color bit depth?

24bit

48bit

16bit

64bit

66. What transmission protocols can SIP be carried on? (Multiple choice)

HTTP

UDP

TLS

SCTP

67. Which of the following can users upgrade the software of VP9660? (Multiple choice)

Through SMC2.0

Via built-in web interface

Through the recording server

Via SSH tool

68. Regarding the local regeneration function, which one of the following is incorrectly described?

The central node and the local node are interconnected through SIP trunks

The central node and the local node use a heartbeat mechanism to monitor the running status of the peer device.

Under normal circumstances, the IP phone of the local node is registered at the central node

The POTS phone of the local node is registered with the local node itself.

69. Which of the following multi-viewing methods supported by VP9630/50/60 MCU? (Multiple choice)

Automatic multi-screen

Multiple images per port

Up to 96 groups of multi-viewers

Conference broadcast multi-screen

70. Which of the following protocol packets will contain audio, video and other multimedia data streams?

RTP

RTCP

RTSP

RSVP

Page 8 of 37

71. After adding the MCU through the SMC web, the GK/SIP status of the MCU is offline. Which of the following options may be the reason for the offline status? (Multiple choice)

GK/SIP registration is not enabled on the SC/MCU or parameter configurations such as port and protocol are inconsistent.

The SNMP connection between the SMC and the MCU failed, causing the configuration delivery to fail.

There is a conference in progress and the SMC is busy.

The GK/SIP URI on the MCU side is inconsistent with the configuration on the SMC side.

72. The switch network port connected to the MCU must be 100M half-duplex.

True

False

73. When two terminals registered in different GKs make a point-to-point number call, which of the following signaling methods does the GK use to query the terminal IP address?

ARQ

SETUP

LRQ

ACF

74. The software format for high-definition video terminal upgrade is?

.txt

.dat

.tkn

.tp4

75. A single VDC Server supports a maximum of 200 cameras to join conferences simultaneously, and can support a maximum of 1,000 cameras by expanding the media node.

True

False

76. Which of the following devices support remote automatic inspection through SMC2.0? (Multiple choice)

SMC2.0

VP9650

TE30

77. How much storage space does the original picture occupy?

900Kb

21Mb

112.5KB

2.637MB

78. Which of the following is correct about data backup and recovery of U190 series unified gateway? (Multiple choice)

The save command must be executed before each backup.

After importing data.bin every time you restore, you must first execute the save command and then restart.

There is no need to execute the save command during backup and recovery.

Backup requires enabling the TFTP tool

79. Which of the following descriptions about high-definition terminals is correct?

HD video terminals cannot communicate with SD video terminals

HD video terminals must be registered to GK to communicate

The high-definition video terminal supports remote control of the camera

The password for the HD video terminal WEB page cannot be empty.

80. SMC3.0 networking does not support the () type.

Recording and broadcasting conference

Multi-level meetings

Adhoc meeting

Data Conference

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81. In DMZ scenario (SIP proxy mode) traversal networking, no matter whether the SC standard server or high-configuration server is deployed in the DMZ area, the SC proxy function needs to be enabled through the command line, that is, the registered SC is set as a proxy SC.

True

False

82. When logging in to the MCU web page, the IP address of the () port is entered by default.

RS232

GEO

GE1

83. Which of the following are the main constraints of the MCU fence mode? (Multiple choice)

Only networking across two networks is supported, and networking across multiple networks is not supported.

GEO is registered to GK, GE1 is only used for number calling

The terminal on the GE1 side does not support calling call set.

The venue calling in from the GE1 side does not support service switching.

84. Which of the following devices are accessories for high-definition terminals? (Multiple choice)

Array microphone

HD camera

Remote control

switch

85. In the conference call process, the tasks of the H.245 capability negotiation part include? (Multiple choice)

Negotiate conference bandwidth

Negotiate whether to use

323 protocol or SIP protocol

Negotiate video codec protocol

Negotiate video resolution

86. Which of the following methods cannot be used to back up and restore the U1900 system version?

Putty+FTP server

Putty+TFTP server

eSight

LMT

87. In a single-level SMC networking scenario, when creating a VDC user on the SMC, the user role must be selected as system administrator or conference administrator.

True

False

88. In H.460 network, what is the correct description of the RTP keepalive code stream?

Sent from public network terminal to private network terminal

Sent from public network terminal to TS

Sent from private network terminal to public network terminal

Sent from private network terminal to TS

89. Regarding the calling call group function, which of the following statements is wrong? (Multiple choice)

When initiating a calling call set, GK uses UDP port 700 to listen for messages.

When initiating a calling call set, GK uses TCP port 700 to listen for messages.

When initiating a calling call set, the terminal uses UDP port 700 to send messages

When initiating a calling call set, the terminal uses TCP port 700 to send messages

90. The gateway in H.323 is between a circuit-switched network and a packet-switched network.

True

False

Page 10 of 37

91. What resources can the SMC2.0 service area be used to manage and schedule? (Multiple choice)

MCU

Recording and broadcasting server

Terminal

Fusion gateway

92. There is a 9039S-M (IP: 211.75.128.160), which first calls terminal A (IP: 122.147.130.244), and then calls terminal B (IP: 211.75.128.159), trying to form a multipoint call, as shown in the figure Screenshots of packet capture and filtering on the 9039S-M side during the process. When 9039S-M calls terminal A, judging from the screenshot, which of the following statement is correct?

9039S-M and terminal A can establish a call, but the media communication is abnormal and the audio is single-passed;

9039S-M and terminal A can establish a call, but the media communication is abnormal and the video is single-passed.

9039S-M and A terminal can establish a call, but the media communication is abnormal, and the video and audio are both single-pass.

9039S-M and A terminal can establish a call, and media communication is normal

93. After the calling group conference is successfully held, the conference information will be in the SMC conference list.

True

False

94. The terminal reads camera data through which of the following?

Video cable

Audio cable

Control line

Infrared

95. Which of the following interfaces supports transmitting audio signals? (Multiple choice)

DVI

HDMI

S-VIDEO

RCA

96. Among the four elements of firewall packet filtering, the conditions that can generally be omitted are?

Source address

Source port

Destination address

Destination port

97. See networking. Assume that all terminals have been registered to GK/SC, there are no port restrictions on NAT1 and NAT2, and all terminals are TE30 terminals (H.323). Then T1 calls T3. Which of the following description is correct?

GK routing is required

Unable to communicate with each other

Can communicate directly with each other

Requires MCU routing

98. In the packet classification of RTCP protocol, which of the following packets describes the receiving statistics of the receiving gateway?

BYE

SDES

99. SMC2.0 can manage equipment, such as TE terminals, MCUs, etc., but cannot manage equipment from other vendors.

True

False

100. In the daily maintenance of MCU, we must ensure that the long-term working environment temperature of the computer room is maintained at ()

0°C ～ 15 ℃

0 ℃ ~25 ℃

0 ℃ ~45 ℃

10 ℃ ~20 ℃

Page 11 of 37

101. In the SIP protocol, which of the following contents are not necessary for the request message?

Request line

Response line

Header field

Message body

102. In the default configuration of the firewall, communication from a high-security network (intranet) to a low-security network (Internet) is generally not restricted, but the firewall will block it on the other hand.

True

False

103. Multi-stream forwarding conference only completes video forwarding on the MCU port side, and does not require video codec conversion. The terminal side completes video codec and multi-screen layout.

True

False

104. SMC, MCU, recording server and terminal all have conference recording function.

True

False

105. Among the six basic request messages, () is used to end the session.

CANCEL

ACK

BYE

INVITE

106. Basis for judging user permissions in SMC 2.0 ()

User type

The organizational structure of the user

The organizational structure of the user and user type

Everything else is wrong

107. Which of the following descriptions of audio protocols are incorrect? (Multiple choice)

ACC-LD supports both mono and multi-channel

ACC-LD only supports mono channel and does not support multi-channel

711 only supports mono channel and does not support multi-channel

G711 supports both mono and multi-channel

108. Which of the following MCU conference control operations include? (Multiple choice)

Modify video format

Set up voice control switching

Set up multi-screen

Extend the meeting

109. VDC (Visual Dispatch Center) is Huawei's visual dispatch solution. The core functions it provides include which of the following options? (Multiple choice)

Multi-level cascading

Unified on the wall

Monitoring integration

Automated deployment

110. The TE terminal has not joined the conference and there is no "Line Status" information in the system status.

True

False

Page 12 of 37

111. The default address of the GEO port of the RSE6500 recording and broadcast server is 192.168.2.1, and the default address of the FE port is 192.168.1.1

True

False

112. When ldeaHub is equipped with SMC network, it supports H.323 and SIP multi-point conference control. Conference control of non-chair sites includes (). (Multiple choice)

Application Chair

Leave the meeting

Extend the meeting

Choose to view multiple screens

113. VP9660 MCU registration GK prompts that the registration has timed out. This may be because the MCU configuration alias or authentication password is incorrect.

True

False

114. The conference access number is the node number of the MCU after the H.323 protocol convenes a conference.

True

False

115. When installing the small table plate of the flip screen on TP3106, it needs to be adjusted directly by hand and cannot be powered on.

True

False

116. Which of the following are main functions of Gatekeeper? (Multiple choice)

Bandwidth Management

Access control

Address translation

Conference Control

117. When a company divided network security domains, it received the following suggestions. Which of the following are the options that can be adopted? (Multiple choice)

Deploy devices and business resources with the same security level in the same security zone. Then, assign addresses to devices based on security zones

The more security areas there are, the more precise the network access control will be, and the safer the network will be, but the management complexity will also increase accordingly.

For systems that do not interact with each other, they can be placed in the same subnet, which can save network resources and reduce management complexity.

For systems with different security levels that need to interact, please deploy them in different security zones and enable strict security policies.

118. A conference can support up to () groups of multi-presence.

1 group

12 groups

24 groups

Group 96

119. In SMC2.0, NlogV2 network data statistics alarms can be configured to set thresholds, which of the following are include? (Multiple choice)

Alarm threshold

Severe alarm threshold

Main alarm thresholds

Minor alarm threshold

120. In the U1900+SC solution, which of the following statements about the audio and video call process are correct? (Multiple choice)

When an IP phone dials to join a conference held on the video conferencing system, the signaling process is: IP phone>U1900->SC system.

When an IP phone dials to join a conference held on the video conferencing system, the signaling process is: IP phone > U1900->MCU system.

When the IP phone dials up to join a meeting held on the video conferencing system, the media process is: IP phone <-->U1900 <--> MC

When the IP phone dials up to join a meeting held on the video conferencing system, the media process is: IP phone <-->MC

Page 13 of 37

121. Regarding configuring touch to access CloudLink terminal, which of the following descriptions is correct? (Multiple choice)

After the terminal’s Touch port is connected to the Touch, it only supports communication between the two and cannot power the Touch.

Touch supports access to WiFi networks and is powered by a power adapter connected to a lype-c cable.

Touch supports access to a switch and is powered by a power adapter connected via a lype-c cable.

Connect the terminal through the Touch network cable, and the Touch port of the terminal supplies power to the Touch.

122. ldeaHub upgrade operation can be completed through the web interface.

True

False

123. The H.323 protocol is divided into two categories: terminal control and media control.

True

False

124. In a single-stage SMC network, regarding the configuration of the VDC Client monitoring terminal, which option is wrong in the following statement?

If "Transmission Type" is selected as "TCP", then the SC's "Support TCP" needs to be set to "Yes" on the SM

When configuring the conference monitoring terminal, the "Transmission Type" can only be set to "TLS" or "TCP".

Before configuring the VDC Client monitoring terminal, you need to create a local site monitoring account and a remote site monitoring account on the SM

Before configuring the VDC Client monitoring terminal, you need to set the "soft terminal type" on the SMC to "TE Desktop&Mobile".

125. Before compression and encoding, one frame of a 1080P image occupies 47Mb of storage space, so what is its color bit depth?

24bit

16bit

48bit

64bit

126. Which of the following descriptions of the relationship between RTCP port numbers and RTP port numbers is correct?

RCTP port number = RTP port number + 2

RCTP port number=RTP port number+1

RCTP port number=RTP port number-1

RCTP port number=RTP port number

127. When scheduling a conference in SMC, if "Main MCU" selects "Auto", SMC will prioritize the conference to the MCU in the service area where the conference site belongs.

True

False

128. In a static NAT network, what is the correct description of the signaling for calling a private network terminal from a public network terminal? (Multiple choice)

The Caller CS Addr address is the NAT address of the private network terminal.

Callee CS addr is the NAT address

The DST address is the NAT address of the private network terminal.

The DST address actually processed by the firewall is the private network terminal address.

129. The camera of the TP3106 three-screen telepresence system has a total of () lenses.

130. An enterprise purchased three U1960s and has about 2,500 IP phone users. Which of the following networking methods is suitable for these three U1960s?

Multi-node centralized call management network

Peer-to-peer distributed call management networking

Distributed call management networking in convergence mode

Page 14 of 37

131. Which of the following descriptions about SMC2.0 service area backup is incorrect?

When the resources in the main service area are insufficient, SMC2.0 will schedule all non-dedicated line sites to the backup service area instead of only adjusting the redundant sites.

When scheduling fails due to insufficient resources in the backup service area, the neighboring cell will no longer use its backup service area for scheduling.

All venues in an area will only be scheduled to one backup service area and will not be dispersed to multiple backup service areas.

All venues in an area can be distributed to multiple backup service areas to achieve load sharing.

132. Which of the following is correct statement about the standard definition color TV system PAL system? (Multiple choice)

Countries that adopt this format include Germany, the United Kingdom, China, etc.

Scan lines are 625 lines per frame

The scanning mode is interlaced scanning

Image frame rate is 29 frames per second

133. SMC2.0 can manage Huawei equipment, such as TE series hard terminals, CloudLink series hard terminals, VP98 series MCUs, etc., but cannot manage equipment from other manufacturers.

True

False

134. TP3106 host WEB interface shows that the flip screen is not connected. Which of the following is correct solution? (Multiple choice)

Check whether the flip screen network cable is connected correctly

Check whether the DIP switch for setting the IP address on the flip screen is set correctly.

Check WEB version issues

Everything else is wrong

135. In the SIP session service, which of the following methods will the called end use to realize the interaction of media capabilities? (Multiple choice)

The called end will carry the called SDP media capabilities in the 100 trying message.

The called end will carry the called SDP media capabilities in the 180 or 183 session progress message.

The called end will carry the called SDP media capabilities in the 200 OK message.

The called end will confirm in the ACK message.

136. In the Huawei GK component, the number table composed of GK and neighbor GK prefix numbers is called the GK routing table.

True

False

137. The video conferencing terminal adopts the () protocol to ensure the security of SIP signaling transmission.

138. TE30 integrated terminal, what are the built-in functional components? (Multiple choice)

Codec

Camera

Microphone

Speaker

139. Which of the following are the correct options for the following description of Network Address Translation NAT? (Multiple choice)

Dynamic NAT is used for many-to-many mapping between private IP and public IP

Also called address proxy, it is used to realize the conversion between private network addresses and public network addresses.

NAPT is used for one-to-one mapping between private IP and public IP

Static NAT private IP and public IP many-to-one mapping

140. In the Early state, which of the following methods can be used to terminate the Dialog? (Multiple choice)

The caller sends BYE

The caller sends CANCLE

Callee’s failed response

The called party sends BYE

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141. Please correspond to the following SMC faults and their handling methods. (Multiple choice)

SMC failed to convene a multi-point conference

For meetings held on SMC, desktop terminals cannot broadcast the venue.

SMC failed to convene a multi-point conference

For meetings held on SMC, desktop terminals cannot broadcast the venue.

142. The basic functions of GateKeeper defined in the ITU-TH.323 protocol do not include?

Geocoding

Network segment restrictions

Bandwidth Management

Regional management

143. Due to network abnormalities, when the standby SC cannot receive the heartbeat of the host SC and cannot ping the virtual IP, a dual-host SC situation may occur.

True

False

144. Regarding the meeting chairperson and ordinary participants, which of the following descriptions is correct? (Multiple choice)

The conference chairperson supports modifying the screen layout, but ordinary participants do not.

The conference chairperson supports enabling voice control switching, which is not supported by ordinary participants.

The conference chairperson supports setting and sending subtitles, but ordinary participants do not.

The district conference chairperson supports setting up multi-screen, but ordinary participants do not support it.

145. Regarding the converged conference 3.0 solution, which of the following statements is correct?

The eMP system queries the address book information of the video conferencing system by accessing eU

The account to log in to the eMP system needs to be created in the eMP system

The eMP system obtains the UC system address book information by accessing the BMU system.

eSpace Web queries the address book information of the video conferencing system by accessing eUA

146. Agent A delivered a video project on-site at an enterprise and connected the MCU and SMC2.0 server to the same switch. After adding the MCU on SMC2.0, it was found that the status of the MCU on SMC2.0 was "SMC and Device "Disconnect", which of the following is the correct way to handle this? (Multiple choice)

147. Which of the following descriptions of SIP registration are correct? (Multiple choice)

Users need to register with the server every time they turn on their computer.

When the SIP Client’s address changes, it needs to be re-registered.

Registration information must be refreshed regularly. Register usually saves the registration information to the Location Server.

The function of SIP registration is to bind the AOR address to a Contact address so that the Proxy can find the calling address when calling.

148. () frames per second is the limit of human eye resolution.

149. Which of the following descriptions of SMC2.0 network management functions is correct? (Multiple choice)

The network management supports batch configuration of manageable devices.

Support web page snapshots

All manageable devices can be upgraded remotely

Support automatic discovery of manageable devices

150. The main factors affecting video conferencing services include delay, jitter, packet loss, etc.

True

False

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151. Advanced user rights for RSE6500 include? (Multiple choice)

View all videos

Download all videos

Upload video

Post a video

152. The VDC and eLTE platform realize audio, video and management interoperability through () Restful interface, enable eLTE handheld and vehicle-mounted terminals to access the video consultation platform, open up wireless private network access, and realize wired and wireless integrated scheduling.

153. Before encoding and compression, if a 4K image uses 48-bit color depth, which of the following is the storage space required for one frame of the original image?

180Mb

370Mb

38OMb

190Mb

154. The terminal auxiliary IP is designed to allow users to log in to the terminal for configuration or debugging within the LAN, and can be used for main services.

True

False

155. The SR message in RTCP is a sending report, which is used to send and receive statistical data from the sending gateway.

True

False

156. If the SMC conference administrator does not enable conference recording when booking a meeting, which of the following operations can he use to enable recording during the meeting?

Enter the conference control interface>Details>Recording to start recording.

Notify the SMC system administrator to perform the following operations: Device management recording server > Start recording

Enter the conference control interface>More>Recording to start recording

Unable to start recording

157. RSE6500 supports simultaneous recording and playback of 3-screen telepresence. Which description of the implementation principle is correct?

The 3-screen telepresence synthesizes a picture by itself and then sends it to the RSE6500 for recording.

The 3-screen telepresence directly sends 3 streams to RSE for recording.

Use the MCU to combine the 3-screen telepresence images into one image, and then send it to the RSE6500 for recording.

Use the analog video synthesizer to synthesize the 3-screen telepresence into one picture, and then send it to the RSE6500 for recording.

158. Which of the following are SIP security mechanisms? (Multiple choice)

IPsec

RTP

SIPS

Digest authentication

159. The () protocol is used to transmit the code stream between the MCU and the network recording and broadcasting server.

323

SIP

RTP

160. If a certain channel of voice uses G.722.1 encoding (encoding rate is 24kbps) and the packaging time is 20ms, then the IP bandwidth required to transmit this channel of voice is 46.5kbps.

True

False

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161. The anti-packet loss protocols supported by ViewPoint 96XX are?

SEC1.0, SEC2.0, SEC3.0, PLC

SEC2.0, SEC3.0, PLC

SEC1.0, SEC2.0, PLC

162. The screen size of a tablet computer is 9 inches, and the maximum screen resolution is 1080p. What is the approximate pixel density ppi of the screen?

200

220

240

260

163. A Media board with VP9660 MCU can support up to () 1080P 30 ports?

164. Which device is responsible for sending the broadcasted site images to other sites?

Gateway

Terminal

MCU

165. In the TP3106 three-screen telepresence system, switch ports 1-12 are divided into VLAN1: external network, and switch ports 13-24 are divided into VLAN2: internal network.

True

False

166. Which of the following methods can be used to schedule recording and broadcasting conferences? (Multiple choice)

Direct dispatch on the video phone

Direct scheduling on SMC

Terminal web interface scheduling

The telepresence venue is scheduled through the central control touch panel

167. Which of the following descriptions of the calling call set is correct?

When initiating a calling call set, SC uses UDP port 700 to listen for messages.

When initiating a calling call set, SC uses TCP port 700 to listen for messages.

When initiating a calling call set, the terminal uses UDP port 700 to send messages.

When initiating a calling call set, the terminal uses TCP port 700 to send messages.

168. In the DMZ scenario (SIP proxy mode) traversal networking, please deploy the CloudRSE machine (ARM) service in the DMZ

169. Forward Error Correction FEC. When both parties establish a call and detect that the media stream packet loss exceeds 0.1% within 10 seconds, the super error correction function will be enabled. The super borrowing function will divide a part of the call bandwidth. Used to transmit redundant code streams that resist packet loss.

True

False

170. Usually we use PCM encoding, which converts continuously changing analog signals into digital encoding through the three steps of sampling () encoding.

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171. The user access layer consists of various types of terminals, including all video terminals that follow the recommendations of (), to realize the interaction between users and the video system. (Multiple choice)

245

320

323

931

172. Which of the following descriptions of Adhoc meetings is incorrect?

Before using an Adhoc conference, you need to create a new Adhoc conference template.

When reserving an Adhoc conference, set the chairman password and conference activation password respectively.

Adhoc conference does not occupy MCU resources when it is not activated.

Adhoc conference is a conference method that activates the conference and joins the conference through the terminal side.

173. Usually, the actual bandwidth occupied by a video conference is higher than the conference bandwidth. What are the possible reasons? (Multiple choice)

The IP data header occupies a certain bandwidth

Signaling interaction data occupies a certain bandwidth

UDP data header occupies a certain bandwidth

Packet loss and retransmission occupy a certain bandwidth

174. In SMC2.0 template management, which of the following template types that can be added? (Multiple choice)

MCU template

GK template

Venue template

Recording and broadcasting server

175. Blocking effects may occur when using the H.264 video protocol codec. What is the main reason?

The macroblock is in an area of intense motion and has a large difference, resulting in obvious edges.

The quantization level of the coding block jumps, resulting in sudden brightness changes at the boundary.

Unreasonable division of macroblock coding modes, resulting in false edges

Deblocking filtering (Deblocking) is not strong enough, resulting in insufficient smooth edges.

176. RTCP is a real-time transport protocol: data transmission can be monitored and controlled in a way that cannot be upgraded to large multicast (multicast) networks.

True

False

177. Huawei’s three-screen telepresence can send how many auxiliary streams at the same time?

Route 1

Route 2

Route 3

No restrictions

178. Which of the following header fields is used to indicate the SIP entity and routing response that the request passes through?

Via

cSeq

From

179. In the local regeneration scenario, assume that A is a SIP user of branch node 1 and B is a PSTN user. A makes an outbound call to B through the gateway of the branch node. After A calls B, which of the following situations will occur in the RTP stream?

A<->branch node 1

A<->Center Node<->Branch Node 1

A<->branch node 1 <->center node<->branch node 1

The other three options are incorrect.

180. Among the following options, which are the three elements of color? (Multiple choice)

Hue

Brightness

Saturation

Contrast

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181. Address resolution means that SC performs the conversion of which of the following contents to the IP address of the entity? (Multiple choice)

Area name

Entity number

Entity domain name

Entity name

182. Which of the following factors may affect the clarity of the image? (Multiple choice)

Contrast

Color space mode

Saturation

Degree of noise reduction

183. What are the two parts of the MCU node number after the meeting is held? (Multiple choice)

MCU prefix number

Sub-meeting number

Service area code

Venue number

184. Which of the following protocols is the protocol for video conference data transmission?

120

MPEG-4

264

711

185. The face-swiping auxiliary sign-in function is realized through face detection and recognition technology.

True

False

186. Network segment bandwidth limitations may cause terminals to fail to register with GK.

True

False

187. When the MCU uses the built-in Web method for management and control, which of the following functions can it achieve? (Multiple choice)

Terminal registration

Intelligent access to various types of terminals

Meeting convening

Conference Control

188. What are the compression and encoding methods of audio signals? (Multiple choice)

Waveform encoding

Predictive coding

Parameter encoding

Mixed encoding

189. Which of the following descriptions of the H.323 call flow is correct? (Multiple choice)

RAS, RTP/RTCP are carried on the UDP protocol layer

931 default port: 1719

RAS default port: 1720

931 and

245 are carried at the TCP protocol layer

190. In the H.460 public-private network traversal network, one SC is deployed in the intranet and one SC is deployed in the DMZ area. What are the benefits of such a network? (Multiple choice)

Reduce the firewall port configuration between the intranet and DMZ zone

The intranet SC assumes the responsibility of

460 Client to solve the problem that the intranet does not support the public and private network traversal of H460 terminals.

Two SCs can back up each other

Two SCs can share the load

Page 20 of 37

191. Under the system's default configuration; if the conference administrator forgets his or her password, which of the following operations required after asking the SMC system administrator to reset the password before logging in normally? (Multiple choice)

Change the password assigned by the system administrator

Approved by security auditor

Keep the meeting in progress

Approved by the security administrator

192. (There is a picture, a screenshot of the call status, showing the video packet loss rate, which is 14.8%). When the chairman broadcasts to the TE terminal, the transmission packet loss rate is 14.8%, indicating that there may be other terminals watching the conference, and the packet loss rate reaches 14.8%.

True

False

193. Which of the following messages does not belong to the status query message?

IRQ

RRQ

IACK _

IRR

194. CloudLink Edge1000 supports the expansion and deployment of independent SCs in the DMZ area. Through SIP proxy or neighbor methods, large-capacity and high-reliability audio and video interoperability between public network terminals and enterprise intranet terminals can be achieved.

True

False

195. Convene a multipoint video conference on the SMC, with a total of 8 venues participating. At this time, the MCU will send () ARQ messages to the GK.

196. Which of the following options refers to the ability to extend the request NOTIFY?

Send a notification event

Send event status to status server

Identify the reliability of provisional responses

Request an instant message

197. Message is the basic unit of SIP protocol and the basic interaction unit between client and server.

True

False

198. Which of the following descriptions of SMC and SC deployment are correct? (Multiple choice)

In large-scale networking, SMC and SC can be deployed in different servers respectively, supporting SMC and SC dual-server active and backup networking.

When SMC and SC deploy active and backup networking, the two SMC and SC need to be set as mutual trust devices respectively.

In medium-sized networking, SMC and SC are co-deployed in the form of docker containers on the same server, and support active and backup deployment of SMC and S

In a small network, namely C1oudLink Edge 1000, SMC and SC are deployed on the same server in the form of containers. SMC and SC master and backup can be implemented based on docker.

199. Subtitles include which of the following type? (Multiple choice)

Banner

Bottom subtitles

Subtitles on both sides

Central subtitles

200. Which of the following reasons may cause the intranet terminal to be unable to register to the intranet GK? (Multiple choice)

The number of terminals that can be registered on the currently registered SC is 0.

The certificate on the intranet SC is not imported.

Terminal network access abnormality

The terminal docking account is inconsistent with the SMC side

Page 21 of 37

201. Before the meeting, it is generally necessary to conduct a basic check on ldeaHub to ensure that it can be used normally. Basic pre-meeting inspections include (). (Multiple choice)

Network status check

Output port status check

Input port status check

Server registration status check

202. Which of the following SIP message header fields combine to uniquely identify a call? (Multiple choice)

From

CSeq

Call-ID

203. Assume that T1 and T2 are two terminals registered in the same SC node area (SC does not enable signaling routing). After T1 calls the T2 number through the H.323 protocol, T1 and T2 communicate.

Which of the following descriptions of TCP link establishment during the above call process are correct? (Multiple choice)

A TCP link needs to be established before media streaming

A TCP link needs to be established before

225 Q931 signaling interaction

A TCP link needs to be established before

245 signaling interaction

A TCP link needs to be established before

225 RAS signaling interaction

204. IVR can be understood as an interactive method that guides users to join a target meeting or create a meeting.

True

False

205. VPT300 has built-in 16 microphones and 2 face detection cameras. It uses the sound detected by the microphone array to locate the sound source and combines the images collected by the binocular camera for face tracking. It supports four modes: manual/autoframe/auto/autonoframe.

True

False

206. How to play the video that has been recorded on RSE6500 on the terminal side? (Multiple choice)

When there is an SC and routing has been configured, the terminal directly calls the IP address of RSE6500

When there is an SC and routing has been configured, the terminal directly calls the recording ID

When there is no SC or no route is configured on the SC, the terminal directly calls the recording I

When there is no SC or no route is configured on the SC, the terminal calls the RSE6500 IP address ## to record the I

207. The U1900 system connects to the PSTN through digital trunks. Phone A in U1900 cannot call user B's mobile phone, but user B can call back phone A normally. Which of the following reasons may cause this failure?

Digital trunk connection failure between U1900 and PSTN

Phone A’s registration is abnormal.

Restrictions on phone A’s outbound call permissions

Phone A has been added to the system’s called blacklist.

208. Before compression and encoding, if a 720P image uses 24-bit color depth, how much storage space does one original frame occupy?

900Kb

21Mb

112.5KB

2.637MB

209. For a three-level automatic cascading conference, the conference administrator needs to schedule at least the number of conferences?

210. Which of the following descriptions of HD terminal auxiliary IP is incorrect?

The auxiliary IP of the HD terminal does not need to be filled in.

The HD terminal auxiliary IP is used for terminal debugging in the LA

HD terminal auxiliary IP can be used for main business.

You can also enter the terminal system through this I

Page 22 of 37

211. ldeaHub's AutoFrame function supports voice tracking, automatically displays a close-up of the speaker, and keeps the speaker in the C position.

True

False

212. A lower-level MCU can have () upper-level MCUs at the same time

213. Among the following public and private network traversal solutions, which one does not require additional network equipment? (Multiple choice)

460

ALG

Static NAT

SNP

214. VPM220W initiates a Wi-Fi connection request. After the TE series terminal accepts the request, the two parties cannot establish a connection. What are the possible reasons? (Multiple choice)

TE series terminal Wi-Fi hotspot is not enabled or configured improperly

VPM220W battery power is below 10%

Multiple nearby VPM220Ws have initiated Wi-Fi connection requests, or multiple TE series terminals have accepted requests from the same VPM220

Poor Wi-Fi communication quality

215. In the H.323 framework protocol, what is the role of the RTP protocol?

Conference Control

Real-time transmission

Call signaling

Media Control

216. The DTMF conference control function of the 96XX series MCU digital keys can change the multi-screen mode of the conference port through the following () keys. (Multiple choice)

217. ARQ carries information about the node itself (IP address and terminal number), as well as information about the terminal to be called (terminal number).

True

False

218. The main purpose of SMC3.0 reinforcement is to improve the defense capabilities of the operating system and database.

True

False

219. Which of the following options are included in the lighting design elements of telepresence conference rooms? (Multiple choice)

Color temperature

Color

Color rendering coefficient

Illumination

220. Which of the following components in the SMC 2.0 system be deployed on servers other than SMC 2.0I? (Multiple choice)

web system

Database

Log

Page 23 of 37

221. SEC's core anti-packet loss technology uses Huawei's unique data verification algorithm to generate verification packets before data transmission. If packet loss occurs during data transmission, the verification packet can be used to recover the lost data to ensure data reliability.

True

False

222. Assume that T1 and T2 are two terminals registered in the same SC node area (SC enables signaling routing). After T1 calls the T2 number through the H.323 protocol, T1 and T2 communicate. Please connect the following network elements: The TCP link establishment corresponds one-to-one with its description.

223. A company is holding a multi-party video conference and now requires Venue A to temporarily access the video conference for discussion. Which of the following methods can Venue A access to the video conference? (Multiple choice)

Calling call set

VMR number to join the membership

IVR dial-up to join the conference

Temporary venue

224. The echo cancellation technology supported by the VPM210 array microphone is?

AEC

AGC

ANS

None of the others

225. In H323, which of the following is the function of the terminal control and management class? (Multiple choice)

Sending of video and audio streams

Call signaling

Control the terminal

Negotiation of audio and video capabilities

226. Assume that T1 and T2 are two terminals registered under the same SC. T1 calls T2's number through the H.323 protocol. Which of the following options is the first RAS message sent by T1 to T2? (Multiple choice)

RRQ

RCF

ACF

ARQ

227. When "PT=200" is included in an RCTP message, which of the following types of messages does it mean?

SEDS

BYE

228. Which of the following audio protocols does not support wideband audio? (Multiple choice)

iLbc

G711

G718

G729

229. Through the video lVR function, it can be realized () (Multiple choice)

Create a meeting

Join the meeting

Add a venue

Delete the venue

230. There is a question similar to 1. Ask the following question: PT= () in the RTP message in the figure below gives four options.

Page 24 of 37

231. VPT300 smart tracking camera contains () function. (Multiple choice)

Adaptive panoramic screen

Automatically identify and track speakers

Dual positioning of voice and image

360-degree intelligent rotation

232. In SMC2.0, the same venue and MCU cannot be added to multiple organizations at the same time.

True

False

233. In the U1900 system, phone A fails to call phone B, but calls phone C successfully; phone B also fails to call phone B; but phone B calls phone A and phone C both succeed. Which of the following reasons may cause this fault? (Multiple choice)

Phone B has enabled the DNs service.

Phone B registration is not normal.

Phone B has been added to the system's called blacklist.

The outgoing call permission of phone B is restricted.

234. H.264 video divides images into three types of frames: P and B. Among them, frames use inter-frame coding, and P frames use intra-frame coding.

True

False

235. The height of MCU8650C is () U

236. The network port of the TP3106 desktop socket is connected to the external network (that is, connected to the business network).

True

False

237. In video conferencing, which of the following audio protocols works best?

711

722

728

AAC_LD

238. In the independent SC dual network card public and private network traversal network, which of the following descriptions about SC is wrong?

Enterprises need to plan the DMZ area and deploy SC in the DMZ area

The server where SC is installed needs to be connected to different networks through two physical network cards.

The SC's LAN1 port needs to be configured with a corresponding private network address, and the LAN2 port needs to be configured with a public network address.

SC only recognizes the IP address of LAN1 port as the management IP by default.

239. On Nlog's Flash graphical interface, we can check the network status of the terminal by checking different data types. For example, after checking NRJ, the interface will display the jitter of the current terminal receiving data packets. Then, by checking (), you can view the packet loss rate of the demo code stream received by the terminal.

240. When the network environment is unstable and there is packet loss, SVC technology is used to recover the packet loss to ensure that the meeting proceeds normally.

True

False

Page 25 of 37

241. There is a 9039S-M (IP: 211.75.128.160). It first calls terminal A (IP: 122.147.130.244), and then calls terminal B (IP: 211.75.128.159), trying to form a multipoint call, as shown in the figure. Screenshots of packet capture and filtering on the 9039S-M side during the process. Which of the following statements about the H245 message during this process is correct? (Multiple choice)

The first terminalCapability Set message sent by 9039S-M to terminal A contains an empty capability set for media negotiation.

The terminalCapability Set message sent by 9039S-M to terminal A for the first time contains the capability set it supports for media negotiation.

The second terminalCapability Set message sent by 9039S-M to terminal A contains an empty capability set for media renegotiation.

The second terminalCapability Set message sent by 9039S-M to terminal A contains the capability set it supports for media renegotiation.

242. The reverberation time T60 value of a standard three-screen telepresence conference room is?

Between 0.4s~0.6s

Between 0.5s~0.8s

Between 0.3s~0.5s

Between 0.2s~0.4s

243. SMC services are divided into two types: active-standby and dual-active. Only one active-standby type service provides external services, and both dual-active services can provide external services.

True

False

244. To hold a 720P30 multi-party video conference with a low frame rate auxiliary stream, the recommended conference bandwidth is 768Kpbs, and the recommended network bandwidth is 1.5 times the conference bandwidth.

True

False

245. Regarding the speaker view in a multi-stream conference, which of the following descriptions is correct? (Multiple choice)

In speaker view mode, if there is a shared presentation in the conference, the presentation image is displayed in the small screen.

In speaker view mode, if there is a shared presentation in the conference, the presentation image is displayed on the large screen.

In speaker view mode; if there is no shared presentation in the conference, the speaker's video will be displayed on the large screen but the user cannot lock the display of a certain speaker's video.

In speaker view mode, if the user broadcasts or selects to watch the venue; the large screen will switch to the broadcast or selected venue video.

246. 08:08:01 ARJ sendto [(61.131.13.141:1719)] [Caller] [59512724] [(61.131.13.141:1720)] [Callee][59522000051] [[Ox0000006derr_call callee_offline]

From the above GK log, we can see that the possible reasons for the call failure are?

The called person is offline

The called person is busy

Insufficient call bandwidth

Capability negotiation failed

247. A transaction can only be identified by a unique branch.

True

False

248. Regarding image resolution, which of the following statements is correct? (Multiple choice)

CIF pixels are 352*288.

4CIF pixels are 704*576.

SIF is an alias for CI

D1 image effect is equivalent to 4CI

249. Which of the following description of the H.245 process when the MCU schedules a conference is correct? (Multiple choice)

The establishment of H245 signaling transmission channel information is transmitted through Q931 signaling.

UDP protocol used by H245 signaling transmission channel

The calling node informs the called node of the H245 signaling transmission channel through the CONNECT message.

The called node informs the calling node of the H245 signaling transmission channel through the CONNECT message.

250. VP9660 MCU does not support which of the following backup methods?

Main control board backup

Power backup

IP/E1 line backup

Media/Signaling Board Backup

Page 26 of 37

251. An SMC system administrator wants to test whether the MCU alarm reporting function is normal. However, the current conference system status is normal and the MCU resource occupation to be tested is not tight. Then he can adjust the alarm threshold by modifying the configuration through which of the following operations?

Enter the SMC Web page>System Configuration>Basic Configuration>Alarm Configuration

Enter the SMC Web page>Maintenance Management>Alarm Configuration

Enter the MCU Web page>System Configuration>Basic Configuration>Alarm Configuration

Enter the MCU Web page>Maintenance>Alarm

252. If the private network terminal does not enable NAT, the public network terminal will fail to call the private network terminal inside the firewall. The root cause is which of the following options?

The public network terminal cannot obtain the RRQ registration information of the private network terminal.

The public network terminal cannot find the source port of the private network terminal.

The destination address of the setup message of the public network terminal is the private network address, because the CS address comes from the internal data of the RRQ message of the private network terminal; it has not changed with NA

253. Which of the following description about Mini-MCU scheduling conference and calling call set is wrong? (Multiple choice)

When Mini-MCU schedules a conference, it can actively call other terminals one by one to hold a conference.

Mini-MCU must register with GK before it can call other terminals to join the conference one by one.

When using the calling call set function, the terminal must register with GK

When using the calling call set function, the MCU must register the GK

254. Regarding the H.225 call signaling process, which of the following messages are in the wrong order?

setup/call proceeding/connect/alerting

etup/alerting/connect

setup/alerting/release complete

setup/call proceeding/alerting/connect

255. If VP9660 is configured with four Media boards (the operating bit numbers are 2, 4, 6, and 9 respectively), then the system will select the Media board in slot _ as the signaling board by default.

256. To send subtitles in T.140 mode, 9000 series high-definition terminals can only output through the HD OUT1 port.

True

False

257. T1 and T2 are two terminals in the same SC node area (authentication policy enabled) and both are successfully registered through the SIP protocol. When T1 calls T2's number through the SIP protocol, SC replies to T1 with a "100 trying" message, and then SC sends which of the following response codes to T1?

403

407

401

404

258. After the user enters the screen casting code in () or WeLink APP and turns on the projection, the mobile phone screen can be projected to ldeaFub.

259. An MCU can only choose to register on the SC of one service area. Users can modify the service area to which the added MCU belongs.

True

False

260. Among the following RAS messages, which one enables the gatekeeper to reject the node's access authentication and address resolution request?

GRQ

RRQ

URQ

LRQ

Page 27 of 37

261. RAS message is a type of message specified in the H.225.0 protocol. It is a protocol used between nodes and gateways to perform management functions, including registration, access control, status, etc.

True

False

262. When a node registers a GK, what information does the UDP Header in the RRQ registration request message contain? (Multiple choice)

Caller Number

Caller CS addr

Caller RAS addr

GK RAS addr

263. VP9650 MCU has a total height of ()U and a total of () slots

5U/3

4U/3

5U/4

4U/4

264. H.264 encoded video frames have three types: () () ()

A, Q, P

B, I, P

C,Q,B

T, C, B

265. In the following description of the principle of dual-SC public and private network traversal in a DMZ scenario (back-to-back mode), which one is wrong?

Private network terminals do not need to support

460 The BH460 client actively establishes a Q931 channel to the

460 server and regularly sends channel keep-alive messages to the

460 server.

The SC in the private network serves as the

460 client, and the SC in the DMZ serves as the

460 server.

When performing

245 interaction, the

460 client needs to initiate an

245 link establishment application to the

460 server.

266. RTCP protocol can perform free member control through SDES grouping. RTCPSDES identifies members who leave the session or members change SSRC.

True

False

267. Which of the following descriptions of the advantages and disadvantages of packet loss retransmission ARO are correct?

ARQ has high latency requirements and is difficult to use on existing networks. It is only effective in small packet loss scenarios and will aggravate image jitter.

ARC basically does not occupy bandwidth resources and has little impact on image quality.

ARQ adds redundant data, occupies a certain bandwidth and reduces the video effect. There is no way to deal with sudden packet loss, and there will be a certain delay.

ARQ can recover packet loss data with a certain probability through group combination verification, which is more effective for general packet loss scenarios.

268. When a private network terminal uses static NAT to traverse public and private networks, how will the SRC address of the private network terminal change?

No change

Convert to NAT export address

Convert to any available public network address

Convert to GK address

269. Gateway realizes conversion between numbers, names, etc. and IP addresses

True

False

270. Which of the following operations is required to log in to the SC as the admin user through the command line for the first time?

Change the default password

Delete user configuration

View IP

Configure IP

Page 28 of 37

271. With the DTMF conference control function of the VP96 series MCU, which of the following keys can be used to change the multi-screen mode of the conference venue? (Multiple choice)

272. HD terminal video output can be set () layout mode. (Multiple choice)

One split screen

Two-split screen

Three-part screen

Quad screen

273. If you want to hold a video conference with auxiliary streaming, which of the following conditions that the conference system must meet? (Multiple choice)

MCU supports auxiliary streaming capabilities

All terminals support auxiliary streaming capabilities

The terminal sending the auxiliary stream needs to support multiple input/output ports

The venue sending the auxiliary stream needs to provide an auxiliary stream source, such as PC input through VGA

274. In the VoIP system, good call results can be guaranteed only when the end-to-end network delay is lower than ().

50ms

250ms

400ms

500ms

275. Which of the following terminals does not have MiniMCU function?

TE30

TE10

TE50

TE40

276. What kind of interface does the TE50 backplane not have?

DVI

HDMl

VGA

SDl

277. A certain MCU captures packets during a conference. The IP address of node A is 1.1.1.2 and the IP address of node B is 10.101.5.12. Which of the following can be confirmed from the screenshot? (Multiple choice)

Node A is a terminal

Node A is an MCU

The logical channel between node A and node B is opened normally, but the media flow is abnormal.

The logical channel between node A and node B is opened normally and media communication is normal.

278. RSE6500 supports simultaneous recording and playback of three-screen telepresence. Which description of its implementation principle is correct?

The three-screen telepresence synthesizes a three-screen image by itself, and then sends RSE to record.

Three-screen telepresence directly sends three streams to RSE for recording

With the help of MCU, the three-screen telepresence is combined into one three-screen image, and then sent to RSE for recording.

Use the analog video synthesizer to synthesize the three-screen telepresence into one three-screen image, and then send it to RSE for recording

279. The stretching mode is to stretch the entire screen according to the output ratio, and part of the image will be captured.

True

False

280. Terminal T1 and terminal T2 register with GK1, T1 calls T2 through the number, and GK1 will receive two ARQ messages.

True

False

Page 29 of 37

281. When you forget your HD terminal username and password and cannot log in to the web interface, you can only restore the factory values.

True

False

282. CIF is a commonly used standardized image format, and a 720P image can achieve 20 times the effect of CIF.

True

False

283. In the scenario where a private network terminal calls a public network terminal, when the logical channel is opened, the media stream will be unidirectional. The reason may be which of the following?

The firewall does not open the corresponding port.

The public network terminal cannot find the private network address.

The terminal cannot perform master-slave determination.

The terminal cannot perform capability negotiation.

284. When analyzing Wireshark packets, if you want to filter out the TCP packets of the device with the source address 192.168.1.100, which of the following excessive conditional expressions can be used to filter?

ip.addr==192.168.1.100 and tcp

ip.addr! =192.168.1.100 and tcp

ip.dst==192.168.1.100 and tcp

ip. src=192.168.1.100 and tcp

285. Terminal simulation docking is a solution that connects two terminals to two different conferences and loops the audio and video input and output interfaces of the two terminals. Which of the following statement is correct? (Multiple choice)

The two terminals can be terminals from different manufacturers.

The two conferences can be held on MCUs from different manufacturers.

Two terminals can be in different cities

One of the terminals does not require network access

286. The network on the TP3106 wall is connected to which port of the switch by default?

287. The general rules for SMC to divide service areas include that a service area must have at least one MCU.

True

False

288. A service area only supports one registered SC and one external network access SC, but one SC can belong to multiple service areas at the same time.

True

False

289. A codec rate is 64kbps and the packaging time is 20ms. The IP bandwidth occupied by this codec is () kbps. (Note: IP/UDP/RTP header is 40 Bytes, here 1kbps=1000bps).

83.6

76.6

90.4

290. Which of the following terminals does not support 8M call bandwidth?

TE30

TE40

TE50

TE60

Page 30 of 37

291. How many SMCs can one MCU support at most?

292. Which layer is the SIP protocol?

Application layer

Transport layer

Network layer

Data link layer

293. RTP and RTCP are part of the H.323 protocol family. If the terminal uses the SIP protocol for communication, RTP and RTCP protocols are not required to participate.

True

False

294. The interconnection between two U1900 series unified gateways can only be achieved through SIP trunking.

True

False

295. Huawei video conferencing supports the () conference convening method. (Multiple choice)

Join with unified access number

Outlook appointment

Convening a meeting on the SMC side

Convene a conference on the terminal side

296. The signaling interaction between the terminal and the GK uses Huawei's proprietary protocol.

True

False

297. Which of the following multi-viewing methods supported by VP8650C/8650/8660 MCU? (Multiple choice)

Multiple groups and multiple screens

Conference broadcast multi-screen

Asymmetric multi-viewing

Multiple images per port

298. In a six-point conference held using the VP96 series MCU, the conference sites T1, T2, and T3 formed a three-screen. The conference sites T4, T5, and T6 were not in the multi-screen. When T1 and T2 hung up and left the conference, two of them, T4, T5, or T6, A single site cannot replace the T1 and T2 sites in multi-presence.

True

False

299. SMC supports regional management, and the system supports a maximum () level area (root level is not included in statistics).

300. CloudMCU supports floating license management, including 1 1080p30 fully adapted port, which can be converted into () SVC port.

Page 31 of 37

301. With the 96XX series MCU, what methods can we use to allow terminal venues that do not support the auxiliary streaming capability to see auxiliary streaming images? (Multiple choice)

Add auxiliary stream to multi-viewer

Intelligent auxiliary flow adaptation

The auxiliary stream sending venue transmits auxiliary stream images through the main stream

Reduce the auxiliary stream sending bandwidth

302. Public and private network traversal is related to the number of ports and channels used by the protocol. How many channels need to be opened for a standard H.323 number calling process?

303. In an active-standby GK network, which of the following processes will the standby GK complete when responding to a synchronization request? (Multiple choice)

Check whether the system data status is valid for primary use

Start the synchronization task process (lowest priority)

Check whether the synchronization is completed every 1 second.

The task is suspended for 10ms and then resumed

304. () is the multi-picture mode supported by CloudMCU. (Multiple choice)

Evenly divided into 16 screens

Divide 24 screens equally

One large and many small Ontable mode

Divide 9 screens equally

305. What factors does the quality of multiple-choice digital audio depend on? (Multiple choice)

Bandwidth

Sampling frequency

Number of quantization bits

Number of channels

306. Q931 signaling port is a UDP port.

True

False

307. SMC2.0 is a software system that can be directly installed on the server equipment provided by the customer.

True

False

308. Which of the following descriptions about multi-node centralized networking is correct?

U1981 cannot be used as a branch node.

All types of users on the local node are synchronized from the central node.

The license information of the central node and the local node can be viewed on the central node.

The number of users of a local node registered on the central node cannot be greater than the number of License users.

309. Which of the following descriptions of Huawei’s point-to-point conference mode is incorrect?

High requirements for interactivity

Mainly used in application scenarios for communication between two points

Meetings can be held without an MCU

CU is required, otherwise the meeting cannot be held

310. A transaction can only be identified by a unique branch.

True

False

Page 32 of 37

311. MCUVP9630-8 has a processing capacity of 8 channels of 1080P30 fully adapted, and can be connected to () channel of 1080P60 fully adapted, and can also be connected to () channel of 720P fully adapted conference venue.

4,6

4,8

4,16

4,10

312. Which device is the concept of SMC2.0 resource pool based on?

SMC2.0

MCU

Terminal

313. After the SMC2.0 installation is completed, a root organization is automatically created in the organization, with the default name ()

Conference administrator

Root

Operator

Administrator

314. Which of the following statements is incorrect when making a meeting reservation in the Fusion Meeting 3.0 solution?

During a converged conference, the eMP system reserves video conference resources through the SMC system.

During a converged conference, the eMP system reserves UC conference resources through the USM system.

During a converged conference, the eMP system reserves UC conference resources through the BMU system.

Meeting information reserved on the eMP system can be sent to meeting participants via email.

315. Which of the following is a standard protocol for video conferencing data transmission?

G711

T120

MPEG-4

H264

316. An HTTP connection is established between the SMC and the MCU. If "Support HTTPS" is selected, it means that the connection between the SMC and the MCU is in encrypted mode.

True

False

317. Which of the following descriptions about virtual machines and containers are correct? (Multiple choice)

Containers have higher isolation than virtual machines

Containers share the system kernel, and each container is a thread on the server.

Virtual machines are virtualization based on hardware resources and have high resource utilization.

Virtual machines are more secure than containers

318. The use of white balance technology is to adjust the color circuit inside the camera to offset the color cast of the captured image under different light source conditions and restore it to a visual habit closer to the human eye.

True

False

319. The output video formats supported by TP3206 three-screen telepresence camera ()

1080 50fps/1080 60fps

1080 30fps/1080 60fps

720 30fps/720 60fps

1080 50i/1080 60i

320. Please sort the following operation steps for on-demand conferences.

Page 33 of 37

321. The VP96 series MCU supports each venue in the same conference to watch different multi-views. This function refers to which of the following options?

Automatic multi-screen

Manual multi-screen

Multiple pictures per port

Multiple screens at the venue

322. In the MSUC solution, the video protocol used for point-to-point interoperability between Huawei TE terminals and the 2010 version of Lync soft terminal is?

264 CIF

263CIF

264HP720P

RT Video

323. TE Desktop supports the calling party to convene a conference.

True

False

324. The diagnostic information collection function on the SMC Web page ("Maintenance Management > Information Diagnosis Collection") supports the collection of which of the following network element information? (Multiple choice)

SMC

Recording and broadcasting server

Hw CloudLink

MCU

325. Intelligent voice assistant can help users perform which of the following operations? (Multiple choice)

View the venue and multiple screens

Call/cancel calling the venue

Turn up/down the volume of the local venue

Join the meeting

326. The business processing board cannot function as the main control board. By configuring multiple service boards, the service backup function of the service board can be realized.

True

False

327. Which of the following descriptions of IP phone configuration is incorrect?

The phone can automatically allocate numbers through esight.

You only need to allocate numbers on the U1900 series unified gateway, and do not need to set it on the phone.

The account password on the phone needs to be consistent with the account password on the U1900 series unified gateway, and the user cannot modify it.

The "SIP server" on the machine needs to be configured as the address of the U1900 series system-gateway.

328. Among the following RAS messages, which one enables the gateway to initiate user access authentication and address resolution requests to the gatekeeper?

RRJ

GRJ

URJ

ARJ

329. For non-AD HOC conferences, which of the following are access numbers that can be configured in SMC2.0? (Multiple choice)

Unified access number

Conference access number

Special conference service number

PSTN special service number

330. ldeaHub supports shutdown and restart functions, but does not support hibernation function.

True

False

Page 34 of 37

331. What audio technology does Huawei Telepresence system rely on for touch-screen voice control switching?

Binaural

Three channels

Mono

Number of MICs

332. Which of the following is not the most basic component of the H.323 protocol framework?

MCU

SMC

Terminal

333. When the terminal in the conference receives which of the following signaling messages, it will not hang up the call?

close Logic Channel

DRQ

Release Complete

end session

334. The essence of the video conferencing system is audio and video communication. There are currently many free audio and video communication software on the Internet, and the video conferencing system is relatively expensive. Compared with the free audio and video communication software on the Internet, which of the following are its essence? (Multiple choice)

Different framework agreements are used

Use different cameras, microphones, etc.

The encoding and decoding protocols used are different

Audio and video codec processing and effects are different

335. The function of the proxy server is to forward requests or responses for clients. It can act as both a server and a client to determine the next hop to forward request messages.

True

False

336. What protocol does RTP run on and what type of data packet is each RTP message encapsulated in?

TCP, TCP

TCP, UDP

UDP, UDP

UDP, TCP

337. Please match the following resolutions to their pixels one by one.

338. Regarding adding MCU on the web interface of SMC3.0, which of the following descriptions is correct? (Multiple choice)

If you need to add an MCU to SMC3.0, it is recommended to restore the MCU to factory configuration first and then add it.

When adding MCU to SMC3.0, you only need to fill in the docking account and password on SMC3.0, not on the MC

The default networking mode of 98 series MCU is SMC2.0, which needs to be changed to SM

VP96 series MCU does not support adding to SMC3.0

339. A firewall protects a network from attacks by "untrusted" networks, but must also allow legitimate communication between the two networks.

True

False

340. 1. Two interconnected Huawei VP terminals A and B communicate through a conference scheduled by Huawei 8650+SMC. A uses the T.140 protocol to send a banner to B. The color of the banner displayed on B is?

The banner color configured on the terminal before terminal A sends

Color of subtitle banner defined on MCU

The color of the subtitle banner defined on the SMC management platform

Banner color configured on terminal B

Page 35 of 37

341. Which of the following descriptions of the H.323 call flow is correct? (Multiple choice)

RAS and RTP/RTCP are carried at the UDP protocol layer.

The common port of Q931 is 1719.

The common port for RAS is 1720.

Q931 and

245 are carried at the TCP protocol layer.

342. In multi-channel cascading, how many cascade channels can two MCUs support at most in one conference?

343. When installing the three-screen telepresence TP3218 in Xinhai, the switch must be divided into two VLANs.

True

False

344. TP3118S can accommodate how many number of participants?

345. When responding to a synchronization request, the standby GK completes which of the following processes?

Check whether the system data status is valid for primary use

Start the synchronization task process (lowest priority)

Check whether the synchronization is completed every 1 second.

Task paused for 1ms

346. U is a unit that represents the external dimensions of the server. It is the abbreviation of unit. 1U is equal to () centimeters.

4.356

4.445

5.675

5.245

347. At which layer are retransmissions and timeouts of the SIP protocol handled?

Syntax and encoding layer

Transaction layer

Transport layer

Transaction user layer

348. SMC2.0 system supports () method to add MCU. (Multiple choice)

Automatic discovery

Manageable

Unmanageable

Manual discovery

349. In the MZ scenario (back-to-back mode), in public-private network traversal networking, one SC is deployed in the intranet and one SC is deployed in the DMZ area. What are the advantages of this networking? (Multiple choice)

Two SCs can achieve load sharing

The intranet SC assumes the responsibility of

460 Client to solve the problem that the intranet does not support the public and private network traversal of

460 terminals.

Two SCs can back up each other

Ports that can effectively converge firewalls

350. When the MCU works in fence mode, GEO and GE1 must be in two different network segments, and the GEO (or GE1) of all boards must be in the same network segment.

True

False

Page 36 of 37

351. A company uses SC dual-server active and standby deployment networking. At a certain moment, the agent host fails. Which of the following options is correct?

For

323 calls and SIP point-to-point calls, the two-machine agent SC switching call will not be interrupted.

For SIP calls, the calling and called transport layer protocols are UDP and the media routing does not go through the SC, so the call is not interrupted.

Dual machines can achieve seamless switching without affecting business

Only for supporting network elements and end-to-end SIP over TCP/TLS conference scenarios, the dual-machine agent SC switching call will not continue.

352. Which of the following multi-screen layout of multi-stream forwarding conference? (Multiple choice)

District equalization mode

One big and many small model

Picture-in-picture mode

Off-screen mode

353. Cloudlink series terminals support wired and wireless sharing of materials.

True

False

354. When installing SwitchCentre, it can only be installed on the C or D drive of the operating system.

True

False

355. When installing three three-screen telepresence TVs, which of the following are required to be installed first?

TV on the left

Central Television

TV on the right

No requirement

356. Which of the following main problems that SNP solves in the video business? (Multiple choice)

Notify the private network to call back the public network

Determine whether the terminal is a private network

Complete the address resolution of the terminal

Redirect media stream to penetrate firewall

357. Hardware backup of MCU included? (Multiple choice)

Main control board

Business board

Power supply

Fan

358. The database and operating system used by SMC3.0 are () respectively. (Multiple choice)

openEuler

Windows

GaussDB

Microsoft

359. Which of the following descriptions about the automatic discovery function of SMC2.0 device management is correct? (Multiple choice)

The device configures the TRAP address and sends device information to SMC2.0

SMC2.0 scans the IP address segment to find devices that can be managed

After SMC2.0 receives the device information, it adds the device to the automatically discovered device list.

The administrator needs to select the discovered device from the automatically discovered device list and add it manually.

360. SMC supports the information window management function to produce and deliver programs to manageable ideaHub series and CloudLink Box series terminals.

True

False

Page 37 of 37

361. Which of the following descriptions about CloudRSE are incorrect? (Multiple choice)

Multiple backups, stable and reliable

Supports ultra-long meeting recording and video segment downloading

Does not support mobile HTML5 playback format

Support 4K dual-stream recording

362. After enabling NAT settings on the video conferencing terminal, the content of the packets can be changed. It can be used in static NAT networking mode or DNAT/NAPT networking.

True

False

363. AAC_LD If the encoding rate is 48kbps and the packaging time is 20ms, the IP bandwidth occupied by this codec is () kbps

364. SMC2.0 is based on the enterprise organizational structure management model. How many system users are there by default?

one kind

Two kinds

Three kinds

Four kinds

365. In H.460 networking, how is the code stream hole between the public network and private network terminals maintained?

IRQ heartbeat message

Timed keep-alive package

Initial keep-alive package

No maintenance is required. Once the channel is opened, the stream channel is established.

366. Which of the following statements about the EUA address book is wrong?

By deploying EUA, information synchronization between SMC and the enterprise's third-party address book can be achieved.

SMC synchronizes user, organizational structure, venue and other information to EU

When EUA is deployed, it only supports co-location with S

EUA is a unified address book based on the standard LDAP protocol.

367. Xiao Ming found that the IP of the SC was not configured. Which of the following commands can be used to configure the IP address of the Lan1 port of the independent SC? (X is the normal IP address)

systemctl enable ipconfig lanl address xxxx netmask 255.255.255.0 gateway XXXX

ipconfig set lanl address xxxx netmask 255.255.255.0 gateway XXXX

ifconfig -h lanl address xxxx netmask 255.255.255.0 gateway XXXX

system-view sys-config network-config lanl ipv4 address xx.xx netmask 255.255.255.0 gateway XXXX

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