Nokia 4A0-107 practice materials Questions Answers

Exam Code:
4A0-107
Exam Name:
Nokia Quality of Service Exam
Last Update:
Jun 01,2026

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Nokia 4A0-107 Questions for Nokia Service Routing Architect Certification Exam 2026

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Questions & Answers PDF

• Question 1

  

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

  • The root arbiter can be the parent of a tier 2 arbiter.
  • A tier 1 arbiter can be the parent of a policer.
  • A child policer can have a priority level from 0 to 10.
  • Weight is used by a parent arbiter to allocate bandwidth among children of equal level

  Reveal Answer Answer: C Next Question

• Question 2

  

  Which of the following criteria is an IP multi-field classification option?

  • prec
  • lsp-exp
  • src-ip
  • do1p

  Reveal Answer Answer: C Next Question

• Question 3

  

  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.

  Reveal Answer Answer: A Next Question

• Question 4

  

  In which of the following scenarios is self-generated traffic QoS (sgt-QoS) useful?

  • EXP markings on transit control traffic are not set correctly.
  • The priority of all self-generated traffic needs to be lowered to allow all other traffic to take precedence.
  • The priority of various control packets requires special treatment throughout the network.
  • The BGP process is consuming too many CPU cycles and is impacting OSPF performance.

  Reveal Answer Answer: C Next Question

• Question 5

  

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

  • dot1p
  • dst-mac
  • lsp-exp
  • dscp

  Reveal Answer Answer: B Next Question

• Question 6

  

  Which of the following are the minimum requirements needed to classify traffic marked with DSCP AF11, AF12, and AF13 into the AF forwarding class and provide fair treatment to the drop precedence settings? (Choose three)

  • Profile mode queues
  • Priority mode queues
  • 1 queue
  • 3 queues
  • 3 forwarding classes
  • 1 forwarding class, with 2 subclasses
  • 1 forwarding class, with 3 subclasses

  Reveal Answer Answer: A,C,F Next Question

• Question 7

  

  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.

  Reveal Answer Answer: D Next Question

• Question 8

  

  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.

  Reveal Answer Answer: C,E Next Question

• Question 9

  

  Which of the following statements regarding scheduling on the Nokia 7750 SR is TRUE? (Choose two)

  • When using profile-mode queues, traffic that is marked as in-profile on ingress and scheduled in the above-CIR loop will still be considered as in-profile at egress.
  • When an HQoS strategy using an egress port-scheduler has been deployed, Tier 1 receives its scheduling rates based on the amount of egress bandwidth available for each forwarding class.
  • The greater the difference between PIR and CIR rates in a queue, the less likely a CIR will be provided.
  • Packets scheduled out of high-priority queues in the default scheduler will have a lower chance of packet loss at the expense of incurring a higher probability of delay.
  • When using priority-mode queues, traffic that is marked as in-profile on ingress and scheduled in the above-CIR loop will be considered as in-profile at egress.

  Reveal Answer Answer: A,C Next Question

• Question 10

  

  Which of the following rate-limiting approaches are used on the Nokia 7750 SR? (Choose two)

  • Shapeless policing at SAP-ingress only.
  • Shapeless policing at SAP-ingress and egress.
  • Biased round robin queuing at ingress only.
  • Soft shaping at all network interfaces.
  • Soft shaping at network ingress only.

  Reveal Answer Answer: D,E Next Question

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