4A0-107 Exam Dumps - Reliable Way to Pass and Get Certified

4A0-107 Exam Dumps – Reliable Way to Pass and Get Certified

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If you are looking for a reliable and comprehensive way to prepare for your 4A0-107 certification exam, look no further than 4A0-107 exam questions. These 4A0-107 exam dumps questions are designed to help you assess your knowledge, identify your strengths and weaknesses, and improve your chances of passing the exam on the first try. These 4A0-107 dumps questions cover all the topics and concepts that are essential for the 4A0-107 exam, so you can be sure that you are fully prepared. Test Alcatel Lucent 4A0-107 free dumps below.

Page 1 of 7

1. Click the exhibit button below.

Given the scheduler-policy (below), how much bandwidth can the best-effort traffic receive (PIR and CIR) when the ingress rate of each queue is 10Mbps?

PIR = 4Mbps. CIR = 1Mbps

PIR = 1Mbps, CIR = 1 Mbps

PIR = 10Mbps, CIR = 1Mbps

PIR = 5Mbps, CIR = 1.25Mbps

PIR = 1.25Mbps, CIR = 1.25Mbps

2. Which of the following modules has 768 MB of buffer memory that dynamically allocates between its two MDAs?

IOM3

FP3 based IMM

IOM1

IOM2

3. Which of the following statements describes a queue’s weight parameter that is used in the hierarchical scheduling?

The weight specifies the priority of the queue during scheduling up to its CI

The weight specifies the priority of the queue during scheduling above-CIR, up to its PI

The weight is used to determine how this queue and other queues or schedulers at the same CIR-level share available CIR bandwidth at that level.

The weight is used to determine how this queue and other queues or schedulers at the same level share available above CIR bandwidth at that level.

4. In a Nokia 7750 SR, which of the following is a class type that is intended for non-real-time customer traffic that requires some committed bandwidth?

Gold

Assured

High Priority

Best Effort

5. How many bits in the IP ToS field define the packet’s precedence?

6. Which of the following components are NOT configured in a hierarchical scheduler policy?

Queue parameters with which the queue will compete for bandwidth.

The level of hierarchy with which a group of schedulers is associated.

Bandwidth controls that limit each child scheduler or child queues associated with the scheduler.

The maximum bandwidth that the parent scheduler can offer its child queues or schedulers.

7. How does an IOM3 improve the queue usage over an IOM2 in a Nokia 7750 SR? (Choose two)

The IOM3 adds more memory to both forwarding complexes which increases the total number of queues available.

The IOM3 only contains a single forwarding complex which reduces the number of queues used.

The IOM3 allows multiple forwarding classes to be assigned to a single queue.

The IOM3 allows queues to be dynamically allocated between ingress and egress.

The IOM3 has a larger CPU capable of tracking active hardware queue utilization and adjusting memory allocation accordingly.

8. Click the exhibit button below.

A network operator has configured a network-queue policy to map forwarding classes to queues, as shown in the exhibit below.

Based on the default scheduling behavior of the Nokia 7750 SR, in which order will packets be serviced?

All in-profile packets in round-robin, then all out-of-profile packets in biased round-robin.

In-profile EF packets, then in-profile H2 packets, then in-profile AF packets, then out-of-profile EF packets, then out-of-profile H2 and AF packets, and then out-of-profile BE packets.

In-profile EF, H2 and AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

In-profile EF packets, then in-profile H2 and AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

In-profile EF and H2 packets, then in-profile AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

9. Click the exhibit button below.

Based on the configuration of the network policy (below), what will be the forwarding class associated with a MPLS encapsulated customer packet that arrives on a dotlQ encapsulated network port 1/1/4:1 on P1 with the following characteristics:

EXP value = 6

DSCP value = cs1

Dot1pvalue = 3

10. In a Nokia 7750 SR, which of the following QoS policies CANNOT include packet classification criteria?

SAP-ingress

SAP-egress

Network-queue

Network

Page 2 of 7

11. On the Nokia 7750 SR, what is the maximum number of ingress queues that a single network queue policy can support in a VPLS?

12. Which of the following fields can be marked or remarked for frames belonging to a Layer 2 service?

DSCP

PREC

Dot1p

ToS

Q-in-Q

13. A physical port has three associated buffer pools.

Which of the following buffer pool combinations is associated to a physical port?

Access ingress, access egress, network egress

Access ingress, network ingress, network egress

Port ingress, port egress, shared bi-directional

Port ingress, port egress, network egress

Port ingress, network ingress, network egress

14. Which of the following statements are TRUE? (Choose two)

The primary contributors to latency are distance, scheduling, and congestion.

The weighted round robin scheduling algorithm will result in more delay for high priority traffic than the regular round robin algorithm.

The round robin scheduling algorithm will result in less jitter for low priority traffic than a strict priority scheduler.

Packet loss can be reduced by decreasing the amount of buffer space available to a queue.

Latency can be reduced by increasing the amount of buffer space available to a queue.

15. Which of the following statements about the bandwidth allocation criteria used by an egress port scheduler is TRUE?

The available bandwidth of the port is divided in a strict priority over its children.

Expedited queues must be serviced before best-effort queues.

Orphaned queues are serviced on the 8th scheduling priority.

The configured CIR dictates the maximum port bandwidth that can be allocated during the within-CIR pass for that level.

16. Refer to the exhibit.

In the diagram shown above, applying policing and soft-policing on access ingress is typical for which of the following types of traffic?

Real-time

Assured

Best-effort

Self-generated

17. Which of the following fields is in the MPLS header?

802.1p bits

Precedence

DSCP

EXP

18. Assume all transmitted frames on a SONET port are 1500 bytes and that the average frame overhead has been configured as 10%.

If the total bandwidth of all queues, excluding overhead, needs to be guaranteed at 55 Mbps, how much bandwidth should be configured for the egress port scheduler applied on that port?

55 Mbps / 1.1 = 50 Mbps

55 Mbps

55 Mbps + 55 Mbps * 0.1 / 1.1 = 60 Mbps

55 Mbps * 1.1 = 60.5 Mbps

19. If a packet is marked on a SAP-ingress, it will be remarked at the first network egress point (if

remarking is enabled in the network egress policy).

TRUE

FALSE

20. Which of the following statements about configuring queues to use shared or reserved buffer space is FALSE?

When queues use shared buffer space, buffers are more efficiently utilized.

Queues that use reserved buffer space will have memory available for their reserved portion.

When a queue is not using its reserved portion, other queues can use it.

Using reserved buffer space prevents a queue from being starved of buffer resources by other queues.

Page 3 of 7

21. Which of the following are major components of QoS functionality on the Nokia 7750 SR? (Choose three)

Microflow reservations using RSVP

DSCP to EXP translation

Traffic classification

Automatic profiling and policy configuration

Buffer memory management

Traffic scheduling

22. Which of the following statements about configuring a hierarchical scheduler policy on a SAP is FALSE?

Several Tier 1, Tier 2, and Tier 3 schedulers can be defined within a policy.

A queue’s parent scheduler must be a Tier-3 scheduler.

The parent must have a higher level in the hierarchy.

If no parent is configured, the queue/scheduler is considered orphaned.

23. Which of the following QoS functions does the slope policy perform?

Classification

Marking

Buffer admission control

Scheduling

24. Refer to the exhibit.

According to the SAP-ingress QoS policy shown, what is the maximum amount of memory that queue 5 can use from the shared buffer pool?

1 kilobyte

2 kilobytes

10 kilobytes

20 kilobytes

25. A packet is to be encapsulated inside an MPLS tunnel which consists of two MPLS headers at the first network egress.

Which of the MPLS EXP fields will be marked?

The EXP field in the bottom MPLS header will be marked.

The EXP field in both the top and bottom MPLS headers will be marked.

For Layer 2 services, the top MPLS header will be marked; for Layer 3 services, the bottom MPLS header will be marked.

The EXP field in the top MPLS header will be marked.

Neither the top nor the bottom EXP field will be marked since EXP remarking can only be done on the network ingress.

26. Packets arrive at the VPRN SAP on PE1 with DSCP marking of af11 and Dot1p of 2.

According to the QoS policies applied at routers PE1, P, and PE2, what is the dot1p value of packets egressing routerPE2? (All the SDPs are MPLS-encapsulated, and all interfaces are using their default trust states).

27. Which of the following statements BEST describes where shaping mechanisms should be applied?

On all ports on the Nokia 7750 S

At the junction of high-speed to low-speed links or at places of traffic aggregation.

At the junction of low-speed to high-speed links or at places of traffic aggregation.

On low-speed WAN links.

Nowhere. Shaping is only performed in hardware and serviced in a round-robin.

28. Which of the following traffic types is typically rate-limited by applying shaping and soft-policing on access ingress?

Self-generated

Real-time

Best-effort

Assured

29. According to the SAP-ingress QoS policy shown, which packets have a higher priority to enter queue 2?

Packets marked with dscp = af33

Packets marked with dot1p = 4

All packets mapped to queue 2 have the same priority to enter this queue.

There are no packets mapped to queue 2.

30. On the Nokia 7750 SR, what is a slope policy used for?

Defining the slope of the TCP slow-start mechanism for self generated traffic.

Defining the slope of the scheduling rate per forwarding class when using HQo

Defining the high and low slope values when deploying buffer admission control for UDP traffic in the committed buffer pool.

Defining the high and low slope values when deploying buffer admission control for TCP traffic in the shared buffer pool.

Defining the high and low slope values when deploying buffer admission control for TCP traffic in the committed buffer pool.

Page 4 of 7

31. When deploying a Nokia MPLS network with QoS, how are the EXP bits set?

The first 3 bits of the DSCP value are copied directly into the EXP field on the first network egress.

The EXP bits are set on the first network egress, based on a combination of the SAP-ingress classification and the network policy applied.

The 3 priority bits are copied directly from the dot1p header into the EXP field of the first MPLS header.

The EXP bits are set based on a default map that translates DSCP codes into internal forwarding classes on SAP-ingress.

32. On the Nokia 7750 SR, how many queues per FC are available for multipoint traffic within a VPLS on service ingress?

33. Click the exhibit button below.

Given the scheduler-policy (below), which of the following can be done to guarantee that the best-effort traffic receives its configured CIR value?

Change the CIR-level value for the best-effort queue to 8.

Do not change anything; it is already guaranteed to receive its CIR

Change the CIR-level value for the best-effort queue to 1.

Change the CIR-weight value of the AF queue to 0.

34. Which of the following are categories of forwarding classes on the Nokia 7750 SR? (Choose two)

Real-time

Assured

Non-conforming

High priority

In-profile

35. Refer to the exhibit.

According to the SAP-ingress QoS policy shown, which of the following statements about packets processed by policer 6 is TRUE?

All forwarded packets will be in-profile

Packets forwarded above CIR will be marked out-of-profile and the rest will be in-profile

Excess packets that arrive within a burst larger than CBS will be forwarded as out-of-profile

All forwarded packets will be out-of-profile

36. How is buffer memory allocated per forwarding complex on a Nokia FP3-based IMM?

512 MB ingress, 512 MB egress

512 MB for network ports, 512 MB for access ports

3.84 GB dynamically allocated between ingress and egress

2 GB, with a minimum of 512 MB ingress and egress, and an additional 1 GB dynamically allocated

37. Click the exhibit button below.

A network operator has configured the SAP-ingress policy below. Ping traffic is expected in queue 3. However, the network operator notices that all traffic is placed in queue 1.

What is the most probable reason for this?

The default forwarding class for all traffic, including ICMP, is BE, which is placed in queue 1.

The SAP has been shut down.

The IP-match criteria has been misconfigured for ICMP traffic.

Queue 3 has no rate or CIR configured and thus cannot hold any packets.

The SAP-ingress policy has not been applied to the SA

38. Click the exhibit button below.

A partial SAP-ingress policy configuration is shown below. A UDP video stream is sent to a PC with IP address 192.168.1.100.

Given the SAP-ingress policy, to which forwarding class is the traffic matched?

39. Which of the statements about packet classification is TRUE?

It sets the destination IP address of the packet.

It uses RVSP to inform other QoS capable routers how the packet should be treated.

It sets the TOS, DSCP, EXP, or DOT1p field based on classification criteria.

It can use a customer’s encapsulated data to determine a packet’s forwarding class.

40. On the Nokia 7750 SR, where can network-queue policies be applied? (Choose two)

On the network egress port.

On the SD

On the access ingress port.

On the egress MD

On the SA

On the ingress MD

Page 5 of 7

41. Which of the following criteria is NOT used in the behavior aggregate classification option?

dot1p

dst-mac

lsp-exp

dscp

42. Which of the following is NOT a reason for configuring a slope policy on a queue?

To have control over the amount of the low priority packets that enter the queue.

To control any traffic flowing through the shared buffer space of the queue.

To limit the number of the TCP sessions that go into slow start during congestion.

To force the TCP algorithm to increase its transmission window upon detecting a congestion.

43. Which of the following statements regarding the default scheduler in the Nokia 7750 SR are TRUE? (Choose two)

There are a maximum of 8 levels of priority serviced using a round-robin algorithm.

The default scheduler will spend an equal amount of time in each queue, as long as there is traffic present

The H1 internal forwarding class will receive its CIR before AF traffic.

Orphaned queues will be scheduled out of the BE queue.

A queue servicing EF and AF traffic will require explicit configuration to set the queue to expedited.

44. Which of the following are NOT ingress matching criteria for a network policy? (Choose two)

TCP port numbers

LSP EXP

DSCP

Source and destination IP addresses

Dot1p priority

45. Which of the following statements about the token buckets of a policer is FALSE?

The CIR has no influence on the forwarding rate of the policer traffic.

The CIR influences whether a packet is considered high-profile or low-profile.

The policer discards all incoming packets when PIR bucket reaches the MBS level.

PIR bucket forwards packets that arrive with rates above PIR as out-of-profile.

46. Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)

WRED monitors the shared buffer space utilization over a period of time.

WRED disables the TCP slow-start congestion control mechanism.

WRED uses two configurable slopes for each buffer pool: a high slope and a low slope.

WRED uses the shared buffer utilization, instead of the individual queue depth, to get a better picture of the average resource utilization of the shared buffer space.

WRED polices the shared buffer pool and marks all packets above a certain rate as "discard eligible."

47. Forwarding subclasses are only relevant to, and are therefore applied within the context of, a _____________policy.

network

scheduling

slope

SAP-ingress

network-queue

48. What is the 6-bit binary representation of DSCP value AF21?

010011

100010

010001

001100

010010

49. Which of the following are possible criteria for classifying packets at the network port ingress on the Nokia 7750 SR? (Choose three)

The EXP bits in the MPLS header.

The packet's source and destination IP addresses.

The packet's DSCP bits.

The dot1p bits in the frame header.

The ID of an SDP that is transporting the packet.

50. Without_______, a customer's high priority traffic can be dropped before its low priority traffic.

packet filtering

prioritization of traffic flows

least cost routing

OAM functionality

separation between the data plane and the control plane

Page 6 of 7

51. Click the exhibit button below.

Given the slope-policy (below), which of the following statements are TRUE? (Choose two)

All out-of-profile traffic will be dropped before that of any in-profile traffic.

The discard probability slope of an in-profile traffic is steeper than that of an out-of-profile traffic.

When the shared buffer utilization reaches 55%, both in-profile and out-of-profile packets may be dropped.

The maximum probability with which an out-of-profile packet can be dropped is higher than that of an in-profile packet.

When the shared buffer utilization is at 61%, only in-profile packets are currently in the shared buffer pool.

52. Which of the following statements regarding buffer pool allocation are FALSE? (Choose two)

Each network egress port receives its own buffer pool.

Each SAP-egress port receives its own buffer pool.

All SAP-ingress ports on the same MDA share a buffer pool.

All the network ingress ports on the same MDA share a buffer pool.

Each network ingress port on the same MDA receives its own buffer pool.

53. While deciding how to share the available bandwidth among its children, when does a port scheduler consider the parameter “level” of a child?

During the allocation of within-CIR bandwidth.

During the allocation of above-CIR bandwidth.

During the allocation of both within-CIR and above-CIR bandwidth.

The port scheduler does not use the level of a child for making bandwidth allocation decisions

54. If traffic is destined to queue 5, which has a high-priority-only value of 0 in the network-queue policy, all out-of-profile packets will be dropped.

TRUE

FALSE

55. How does a shaper rate-limit a traffic stream?

Packets that arrive in a burst are immediately dropped; packets that arrive with the proper in between space are immediately.

Packets are buffered on arrival and are forwarded at an average rate conforming with PIR, typically, with a reduced burstiness.

Packets with an average arrival rate higher than PIR are immediately dropped; conforming packets are forwarded at the same rate at which they arrive.

Packets with an average arrival rate higher than PIR are buffered for future processing; conforming packets are immediately forwarded.

56. Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)

WRED monitors the shared buffer space utilization over a period of time.

WRED disables the TCP slow-start congestion control mechanism.

WRED uses two configurable slopes for each buffer pool: a high slope and a low slope.

WRED uses the shared buffer utilization, instead of the individual queue depth, to get a better picture of the average resource utilization of the shared buffer space.

WRED polices the shared buffer pool and marks all packets above a certain rate as "discard eligible."

57. An egress port scheduler applied to an Ethernet port has a configured bandwidth of 100 Mbps. All frames transmitted on the port are 80 bytes.

What is the aggregate transmit bandwidth of all queues using the port scheduler?

100Mbps * 20/(80 + 20) = 20 Mbps

100Mbps * 80/(80 + 20) = 80 Mbps

100Mbps

100+ 100 * 20/(80 + 20) = 120 Mbps

58. Refer to the exhibit.

Traffic corresponding to a layer-3 VPN arrives at router PE1 marked with a dot1p value of 4. The SDP carrying the traffic uses an MPLS transport tunnel.

Given the policies applied on the routers in the diagram, what is the EXP value of packets arriving at router PE2?

59. In the context of hierarchical scheduling, a scheduler is configured with a CIR weight of 0.

Which of the following statements is TRUE?

The scheduler will be allocated its "within CIR" bandwidth before all other children at the same level have received their "within CIR" bandwidth.

The scheduler will be allocated its "within CIR" bandwidth after all other children at the same level have received their "within CIR" bandwidth.

The scheduler will be allocated its "within CIR" bandwidth after all other children at all levels have received their "within CIR" bandwidth.

The scheduler will not be allocated its "within CIR" bandwidth.

60. Traffic assigned to forwarding classes is placed into queues, while the contents of the queues are serviced in a controlled manner using____________.

WRED

shapers

schedulers

markers

weighted fair queues (WFQ)

Page 7 of 7

61. Which of the following statements regarding DSCP bits are TRUE? (Choose three)

The three most significant (first) bits define 8 forwarding classes.

The three least significant (last) bits of the DSCP specify the drop probability.

The full 8 bits of the TOS field are used for DSC

To convert DSCP to IP precedence, the three most significant (first) bits are matched.

DSCP provides for eight drop probabilities.

62. Which of the following statements about scheduling on the Nokia 7750 SR is FALSE?

When using priority-mode queues, traffic marked as low-priority on ingress and scheduled in the above-CIR loop will be considered as in-profile at egress.

When using priority-mode queues, traffic marked as high-priority on ingress and scheduled in the above-CIR loop will be considered as out-of-profile at egress.

When using profile-mode queues, traffic marked as low-priority on ingress and scheduled in the above-CIR loop will be considered as out-of-profile at egress.

When using profile-mode queues, traffic marked as in-profile on ingress and scheduled in the above-CIR loop will still be considered as in-profile at egress.

63. Which of the following statements describe the primary objectives of the policing of traffic flows on the Nokia 7750 SR? (Choose two)

Ensure that traffic flows conform to their traffic profile.

Log violations of metered traffic flows exceeding the CIR value set on the entity across which the traffic is moving.

Provide fairness between traffic flows, so that conforming (in-profile) traffic flows are not starved of bandwidth and/or buffer space by non-conforming (out-of-profile) flows.

Minimize packet loss and reduce end to end latency.

Ensure that variable latencies do not cluster short bursts of originally conforming packets and render them nonconforming.

64. Which of the following policies does NOT exist by default on a network port?

A network policy for every network interface configured on the port.

A slope policy for the port on ingress.

A network queue policy for the corresponding MDA on ingress.

A network queue policy for the port on egress.

65. 1.The IP ToS field consists of ________ bits, of which ________are used. The _________most significant (first) bits define precedence.

8,6,3

8,8,6

16, 8, 4

8,6,4

24, 16, 8

66. To manage the shared buffer space at network ports, slope policies are applied on _________ for the ingress direction, and on ________ or _________ for the egress direction.

Interfaces, ports, SAPs

Ports, ports, MDAs

MDAs, MDAs, ports

Interfaces, interfaces. MDAs

MDAs, ports, interfaces

67. Which of the following are major components of QoS functionality on the Nokia 7750 SR? (Choose three)

Microflow reservations using RSVP

DSCP to EXP translation

Traffic classification

Automatic profiling and policy configuration

Buffer memory management

Traffic scheduling

68. Which of the following statements about behavior aggregate classification is TRUE?

It sets both the forwarding class and the packet’s dot1p, lsp-exp, precedence, or dscp field to the same value.

It groups all packets together into a single aggregate stream, and gives all packets the same treatment.

It copies the three most significant bits in the packet’s dscp field into the forwarding class.

It assigns a forwarding class based on the packet’s dot1p, lsp-exp, precedence, or dscp value.

69. Which of the following statements about a queue’s rate parameters is FALSE?

If CIR = PIR, then all packets will be considered as in-profile.

CIR can be set to 0.

CIR can be larger than PI

CIR can be set to ‘max’.

70. Packets arrive at the VPLS SAP on PE1 with DSCP marking of af11 and Dot1p of 2.

According to the QoS policies applied at routers PE1, P, and PE2, what is the DSCP value of packets egressing router PE2? (All the SDPs are MPLS-encapsulated, and all interfaces are using their default trust states).

af11

af21

af23

af31

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