Nokia 4A0-C03 - Nokia NRS II Composite: IS-IS version Exam
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Total 145 questions
Question #11 (Topic: Exam A)
When using IS-IS in multi-topology mode for routing in a dual-stack IPv4/IPv6 environment, which of the following statements is FALSE?
A. Two instances of the IS-IS protocol need to be configured, one for IPv4 and one for IPv6.
B. The multi-topology mode has the advantage of avoiding traffic black-holing.
C. The shortest path tree calculation uses separate topology maps for IPv4 and for IPv6.
D. In a multi-area environment, the SPF algorithm needs to be run four times on each L1/L2 router.
Answer: A
Question #12 (Topic: Exam A)
Which of the following statements defines an FEC in traditional IP routing?
A. A group of packets that will be forwarded by the router in the same manner, over the same path.
B. A group of packets that arrive at the router on the same interface.
C. A group of packets that leave the router on the same interface.
D. A group of packets that arrive at the router on the same interface, from the same source.
Answer: A
Question #13 (Topic: Exam A)
A Nokia 7750 SR label switches a packet it receives. The packet has an outer label TTL of 250 and an inner label TTL of 251. Which of the following statements is TRUE?
A. The outer label TTL will be 249 and the inner label TTL will be 250.
B. The outer label TTL will be 249 and the inner label TTL will be 251.
C. The outer label TTL will be 251 and the inner label TTL will be 251.
D. The outer label TTL will be 251 and the inner label TTL will be 252.
Answer: B
Question #14 (Topic: Exam A)
Which of the following statements about when the explicit null is implemented is TRUE?
A. The penultimate router will forward packets to the eLER, based on the IP header.
B. The eLER will receive packets with a top label value of 0.
C. The eLER will receive packets with a top label value of 3.
D. The penultimate router will pop the top label from the packets.
Answer: B
Question #15 (Topic: Exam A)
Two directly connected routers set different interface Hello timeout values. Router R1 uses 15 seconds, while router R2 uses 30 seconds. Which of the following statements best describes the LDP adjacency?
A. The adjacency forms with the lower timeout value.
B. The adjacency forms with the higher timeout value.
C. The adjacency is in init state.
D. The adjacency times out after 30 seconds.
Answer: A
