Nokia Nokia Certifications 4A0-107 Questions & Answers

• Question 71:

  Which of the following statements about the default scheduler in the Nokia 7750 SR is FALSE?

  A. The default scheduler spends an equal amount of time servicing each queue that has traffic to be sent out.

  B. Queue-type can be configured as best-effort, expedite, or auto-expedite.

  C. A queue will be serviced as expedited if its type is configured as expedited, regardless of the forwarding classes mapped to it.

  D. A queue configured as auto-expedited will be an expedited queue as long as no Best Effort FC is mapped to it.

  Correct Answer: A

• Question 72:

  Which of the following statements about burst-limit of a queue is FALSE?

  A. Burst-limit sets a limit on the maximum burst of packets transmitted during each scheduler visitation time.

  B. Proper configuration of the burst-limit can prevent packet drops on the downstream nodes resulting from traffic bursts.

  C. The lower the configured burst limit value, the lower the burst allowed to enter the queue.

  D. If the burst-limit is not configured, a default burst-limit value will be used by the queue.

  Correct Answer: D

• Question 73:

  Which of the following is NOT an adaptation rule supported on the Nokia 7750 SR for calculating the operational CIR/PIR of a queue?

  A. Closest

  B. Average

  C. Min

  D. Max

  Correct Answer: B

• Question 74:

  Which of the following statements about a queue's rate parameters is FALSE?

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

  B. CIR can be set to 0.

  C. CIR can be larger than PIR.

  D. CIR can be set to `max'.

  Correct Answer: A

• Question 75:

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

  A. 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.

  B. 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.

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

  D. 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.

  Correct Answer: A

• Question 76:

  According to the SAP-egress policy configured and applied, which queue will forwarding class AF's traffic use?

  

  A. Policer 2 on the queue-group Q-Group1 instance 1.

  B. Policer 1 on the queue-group Q-Group1 instance 1.

  C. The default policer 1.

  D. AF traffic is dropped.

  Correct Answer: A

• Question 77:

  A queue-group template can contain both queues and policers when applied under which conditions?

  A. When applied at the port level for access ingress.

  B. When applied at the FP (Forwarding Pass) level for access ingress.

  C. When applied at the FP (Forwarding Pass) level for network ingress.

  D. When applied at the port level for network egress.

  Correct Answer: D

• Question 78:

  Both SAP-ingress 10 and policer-control-policy "CFHP" have been applied to a service SAP ingress. What is the maximum bandwidth allocated to policer 2?

  

  A. 10000 Kbps

  B. 15000 Kbps

  C. 20000 Kbps

  D. 30000 Kbps

  Correct Answer: D

• Question 79:

  Which of the following is NOT an advantage of deploying queue-groups on a network port?

  A. It enables fine-tuned SLA control that is not possible when using a common set of queues for all L2/L3 services.

  B. It enables CFHP and hierarchy scheduling (egress) for each network interface.

  C. It improves scalability by allowing the use of queues instead of the default set of policers used on network egress.

  D. It allows for enforcing bandwidth reservations of the LSPs that are used by the SDPs configured on the network interfaces.

  Correct Answer: B

• Question 80:

  Which of the following statements about CFHP policing hierarchy is FALSE?

  A. The root arbiter can be the parent of a tier 2 arbiter.

  B. A tier 1 arbiter can be the parent of a policer.

  C. A child policer can have a priority level from 0 to 10.

  D. Weight is used by a parent arbiter to allocate bandwidth among children of equal level

  Correct Answer: C