Nokia Nokia Certifications 4A0-107 Questions & Answers

• Question 161:

  Which of the following statements regarding egress FC and profile over-ride are TRUE? (Choose two)

  A. Packets can be classified into 16 different FCs when using priority mode queuing.

  B. This feature is available on egress SAPs within any service.

  C. MPLS EXP bits can be changed based on multi-field classification.

  D. If a Behavior Aggregate (BA) and Multi-field (MF) match occurs, only the MF override parameters will take effect.

  E. If a Behavior Aggregate (BA) and Multi-field (MF) match occurs, the BA classification can override the forwarding class while the MF classification can override the profile.

  Correct Answer: BE

• Question 162:

  Click the exhibit button below. Given this scheduler-policy configuration, which of the following can be said about the scheduler called "high"? (Choose two)

  

  A. It is a parent scheduler.

  B. It is the top-level scheduler.

  C. It can allocate up to 50 Mbps of bandwidth to scheduler "low" since the bandwidth is not used by another Tier 3 scheduler.

  D. It is a child scheduler.

  E. It can only have queues as children.

  Correct Answer: AD

• Question 163:

  At which points can traffic be marked or remarked on the Nokia 7750? (Choose two)

  A. SAP-ingress only

  B. SAP-egress only

  C. SAP-ingress and SAP-egress

  D. Network ingress

  E. Network egress

  Correct Answer: CE

• Question 164:

  Which of the following statements regarding policing and shaping on the Nokia 7750 SR are TRUE?

  (Choose two)

  A. The larger the configured MBS value, the lower the amount of shaping performed.

  B. When policing is enabled on the SAP-ingress, all traffic is considered as in-profile.

  C. Setting the CIR to 1000 and the PIR to max will enable shapeless policing at 1 Mbps within the SAP-egress policy.

  D. Configuring MBS to equal CBS will disable shaping.

  E. Setting the CIR and PIR to equal values disables soft-policing.

  Correct Answer: BE

• Question 165:

  To implement Hierarchical-QoS (Multi-tiered scheduling), which of the following actions must be undertaken? (Choose three)

  A. H-QoS capabilities must be enabled globally on the router

  B. A scheduler-policy must be configured.

  C. The queues in the SAP-ingress and SAP-egress policies do not require additional configuration attributes to make use of the hierarchical schedulers.

  D. The network queue policy must be configured to make use of the scheduler-policy.

  E. The scheduler-policy must be referenced in the SAP-ingress and SAP-egress policies.

  F. The scheduler-policy must be applied on the service SAP.

  Correct Answer: BEF

• Question 166:

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

  A. WRED

  B. shapers

  C. schedulers

  D. markers

  E. weighted fair queues (WFQ)

  Correct Answer: C

• Question 167:

  When using an egress port scheduler, on which scheduling loop are orphaned queues serviced?

  A. Level 8 within CIR.

  B. Level 8 between CIR and PIR.

  C. Level 8, once all PIR is serviced.

  D. Level 1 within CIR.

  E. Level 1 between CIR and PIR.

  F. Level 1, once all PIR is serviced.

  Correct Answer: C

• Question 168:

  Which of the following statements regarding the egress port scheduler is TRUE?

  A. The egress port scheduler can have up to 17 children spread across 8 levels.

  B. Multiple egress port schedulers can be assigned to a single port with many HQoS children.

  C. Multiple HQoS policies can be children of a single port scheduler.

  D. Multiple egress port schedulers can be children of a single HQoS scheduler.

  Correct Answer: C

• Question 169:

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

  A. On all ports on the Nokia 7750 SR.

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

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

  D. On low-speed WAN links.

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

  Correct Answer: B

• Question 170:

  Policing improves bandwidth utilization by using buffering to absorb high bursts of traffic.

  A. TRUE

  B. FALSE

  Correct Answer: B