4A0-101

4A0-101 practice questions, page 9 of 13, with answer review and explanations.

Question 41

Which of the following statements regarding the IS-IS CSNP is false?

  1. CSNPs are used to maintain consistency in the link state database.
  2. CSNPs are advertised before an adjacency is formed with another router.
  3. There are two types of CSNPs: Level 1 and Level 2.
  4. CSNPs are advertised after an adjacency is formed with another router.

Question 42

Click the exhibit button. In the IS-IS network shown, router R1 has been configured to summarize network 20.20.1.0/24 and 20.20.2.0/24 as 20.20.0.0/16. Which router's routing table will be reduced compared to the routing table before the summarization?

  1. Router R1
  2. Router R2
  3. Routers R1 and R2
  4. Router R4

Question 43

What value should the AFI be set to for locally administered addressing?

  1. 1
  2. 49
  3. 47
  4. 45
  5. 39

Question 44

Click the exhibit button. For the IS-IS network shown, and assuming point-to-point links, what adjacencies will router R1 establish?

  1. L1/L2 adjacency with router R2. L1 adjacency with router R3
  2. L2 adjacency with router R2 L1 adjacency with router R3
  3. L1/L2 adjacency with router R2 L1/L2 adjacency with router R3
  4. L1/L2 adjacency with router R2. L1 adjacency with router R4

Question 45

Which of the following are similarities between OSPF and IS-IS? Choose two answers.

  1. Metric is based on hop count.
  2. Slow convergence after link failures.
  3. Support hierarchy through the use of areas.
  4. Support for CIDR.
  5. Link state updates sent using layer 3 multicast.