Nokia Nokia Certifications 4A0-107 Questions & Answers

• Question 51:

  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.

  Correct Answer: D

• Question 52:

  Where is a QoS network queue policy applied?

  A. Ingress SAP or egress SAP

  B. Egress port or ingress MDA

  C. Egress MDA or ingress network interface

  D. Egress network interface or ingress MDA

  Correct Answer: B

• Question 53:

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

  A. Self-generated

  B. Real-time

  C. Best-effort

  D. Assured

  Correct Answer: C

• Question 54:

  According to the configurations shown, which of the following statements about the classification and queuing of self-generated OSPF traffic is TRUE?

  

  A. It will be classified into forwarding class BE and stored in queue 1.

  B. It will be classified into forwarding class BE and stored in queue 8.

  C. It will be classified into forwarding class NC and stored in queue 1.

  D. It will be classified into forwarding class NC and stored in queue 8.

  Correct Answer: A

• Question 55:

  Which of the following self-generated traffic applications is considered "management" traffic, as opposed to "protocol" traffic?

  A. IS-IS

  B. RSVP

  C. ICMP

  D. BGP

  Correct Answer: C

• Question 56:

  Which of the following statements about the QoS treatment of self-generated traffic in the Nokia 7750 SR is FALSE?

  A. All self-generated traffic is assigned into forwarding class NC by default.

  B. Ingress self-generated traffic is stored in CPM queues and egress self-generated traffic is stored in IOM queues.

  C. The self-generated packets will be marked with a default DSCP value.

  D. The self-generated packets will be marked with default EXP bits.

  Correct Answer: C

• Question 57:

  Packets enter the network via the ePipe SAP on PE1 with dot1p marking of 6. The VC type of the SDP interconnecting PE1 and PE2 is vlan. All network interfaces use the default network QoS policy. According to the configuration shown above, what is the inner dot1p value of the BE traffic egressing router PE2?

  

  A. 0

  B. 3

  C. 6

  D. 22

  Correct Answer: C

• Question 58:

  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).

  

  A. 2

  B. 3

  C. 5

  D. 6

  Correct Answer: B

• Question 59:

  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).

  

  A. af11

  B. af21

  C. af23

  D. af31

  Correct Answer: A

• Question 60:

  At which point are internal QoS markings added to the packets?

  A. SAP-ingress

  B. FFPC

  C. SAP-egress

  D. network-egress

  Correct Answer: B