Nokia 4A0-107 Online Practice Questions and Exam Preparation

Nokia 4A0-107 Online Questions & Answers

• Question 71:

  Which of the following entities can scheduler policies be applied to? (Choose two)

  A. Network ingress port
  B. Epipe ingress SAP
  C. ES egress SAP
  D. Ingress MDA
  E. VPRN ingress interface
  F. Shared buffer space
  B. Epipe ingress SAP
  C. ES egress SAP

• Question 72:

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

  

  A. Queue 3, because it is explicitly defined in the SAP-egress policy.
  B. Queue 2, because it is explicitly configured in the queue-group template.
  C. The default, queue 1, because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.
  D. AF traffic is dropped because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.
  A. Queue 3, because it is explicitly defined in the SAP-egress policy.

• Question 73:

  Which priority-mode queue parameter may influence both the profile marking, and scheduling priority of a queue?

  A. PIR
  B. CIR
  C. MBS
  D. burst-limit
  B. CIR

• Question 74:

  How does a shaper rate-limit a traffic stream?

  A. Packets that arrive in a burst are immediately dropped; packets that arrive with the proper in between space are immediately.
  B. Packets are buffered on arrival and are forwarded at an average rate conforming with PIR, typically, with a reduced burstiness.
  C. Packets with an average arrival rate higher than PIR are immediately dropped; conforming packets are forwarded at the same rate at which they arrive.
  D. Packets with an average arrival rate higher than PIR are buffered for future processing; conforming packets are immediately forwarded.
  D. Packets with an average arrival rate higher than PIR are buffered for future processing; conforming packets are immediately forwarded.

• Question 75:

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

  A. The three most significant (first) bits define 8 forwarding classes.
  B. The three least significant (last) bits of the DSCP specify the drop probability.
  C. The full 8 bits of the TOS field are used for DSCP.
  D. To convert DSCP to IP precedence, the three most significant (first) bits are matched.
  E. DSCP provides for eight drop probabilities.
  A. The three most significant (first) bits define 8 forwarding classes.
  B. The three least significant (last) bits of the DSCP specify the drop probability.
  D. To convert DSCP to IP precedence, the three most significant (first) bits are matched.

• Question 76:

  Which of the following BEST describes a SAP when regarding QoS?

  A. A point in the network where EXP bits can be mapped to one of eight predefined FCs, each one with its own queue.
  B. A logical point in a service tunnel where all of customer traffic is aggregated.
  C. A point at which the initial classification of customer traffic occurs.
  D. A point in the network where QoS parameters are discarded in favor of lower-level hardware queuing functions, such as LLI (Link Layer Interleave).
  E. A point in the network where traffic flows from multiple different services are queued together, based on forwarding class.
  C. A point at which the initial classification of customer traffic occurs.

• Question 77:

  Which of the following statements about the token buckets of a policer is TRUE?

  A. When a packet arrives, the PIR bucket depth is checked and the packet is discarded if this bucket is full.
  B. The CIR bucket of a policer is the reserved portion of its PIR bucket.
  C. The CIR bucket of a policer has two thresholds: CBS and HPO.
  D. Packets processed by the PIR bucket at an average rate above PIR will be forwarded as out-of-profile.
  A. When a packet arrives, the PIR bucket depth is checked and the packet is discarded if this bucket is full.

• Question 78:

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

  A. The weight specifies the priority of the queue during scheduling up to its CIR.
  B. The weight specifies the priority of the queue during scheduling above-CIR, up to its PIR.
  C. 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.
  D. 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.
  D. 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.

• Question 79:

  Which of the following fields in packets belonging to a Layer 3 service can be pre-marked on SAP-ingress?

  A. Dot1p
  B. DEI
  C. EXP
  D. DSCP/PREC
  D. DSCP/PREC

• Question 80:

  Which of the following are possible criteria for classifying packets at the SAP-ingress? (Choose three)

  A. The EXP bits in the MPLS header.
  B. The packet's source and destination IP addresses.
  C. The service ID of the service to which the SAP belongs.
  D. The dot1p bits in the frame header.
  E. The packet's Ethertype.
  B. The packet's source and destination IP addresses.
  D. The dot1p bits in the frame header.
  E. The packet's Ethertype.