Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 831:

  Refer to the exhibit below. IS-IS IPv6 routing is configured in the network with globally routed addresses as shown. How many routes will R4 have in its IPv6 route table?

  

  A. 1

  B. 2

  C. 3

  D. 4

  E. 6

  F. 7

  Correct Answer: B

• Question 832:

  Click the exhibit button.

  

  Router R2 advertises the network 192.168.3.0/24 to router R1 via RIP. How can router R1 ensure that it discards the route?

  A. Use an import policy and a prefix list on router R1 to reject this route.

  B. Use a prefix list on router R1 to discard all ingress IS-IS routes.

  C. Use an export policy and prefix list on router R1 to reject this route.

  D. This is not possible because RIP cannot use import policies.

  Correct Answer: A

• Question 833:

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

  A. Metric is based on hop count.

  B. Slow convergence after link failures.

  C. Support hierarchy through the use of areas.

  D. Support for CIDR.

  E. Link state updates sent using layer 3 multicast.

  Correct Answer: CD

• Question 834:

  In IS-IS, which of the following statements regarding an L1/L2 router is false?

  A. An L1/L2 router can have neighbors in different areas.

  B. An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology.

  C. An L1/L2 router advertises its L2 routes to its L1 neighbors.

  D. An L1/L2 router sets the ATT bit in L1 LSPs to identify itself as an L1 router.

  Correct Answer: D

• Question 835:

  Which of the following best describes how IS-IS routers exchange updates on an Ethernet interface?

  A. IS-IS routers exchange updates by sending UDP packets to a multicast address.

  B. IS-IS routers exchange updates using IP multicast packets.

  C. IS-IS routers exchange updates using Ethernet multicast packets.

  D. IS-IS routers exchange updates by sending packets to the subnet broadcast address.

  Correct Answer: C

• Question 836:

  At what point is the LSP SRM flag cleared when an LSP is sent on an IS-IS point-to-point link?

  Choose two answers.

  A. As soon as the LSP is transmitted.

  B. When an acknowledgment is received in the form of PSNP.

  C. When an older LSP is received.

  D. When a newer or same aged LSP is received.

  E. Only when a newer LSP is received

  Correct Answer: BD

• Question 837:

  There is an IP host with IP address 10.2.3.1. A static route is created, using the "configure router static-route 10.2.3.0/24 next-hop 10.1.2.1" command. What is the correct traceroute command to test this static route on an Alcatel-Lucent 7750 SR?

  A. traceroute 10.2.3.1

  B. traceroute 10.2.3.1 next-hop 10.1.2.1

  C. traceroute next-hop 10.1.2.1

  D. traceroute does not work on the Alcatel-Lucent 7750 SR.

  E. traceroute 10.1.2.1

  Correct Answer: A

• Question 838:

  Refer to the exhibit.

  

  Assume that OSPFv3 is properly configured on all routers and that R4 advertises its system prefix into Area 0. Which of the following statements best describes how R5 learns R4's IPv6 system prefix?

  A. With a Router LSA originated by R1

  B. With a Router LSA originated by R5

  C. With a Router LSA originated by R4

  D. With an Inter-Area Prefix LSA originated by R1

  E. With an Inter-Area Prefix LSA originated by R5

  F. With an Inter-Area Prefix LSA originated by R4

  Correct Answer: D

• Question 839:

  Which of the following statements regarding OSPF routing updates on a multi-access network segment is true?

  A. In multi-access networks, a DR and BDR are elected only if there are more than two routers connected to the network segment.

  B. In multi-access networks, a DR and BDR are elected only if the subnet masks on the router interfaces are less than /30

  C. In multi-access networks, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.

  D. In multi-access networks, a DR and BDR are elected. The DR sends link-state advertisements describing the network.

  Correct Answer: D

• Question 840:

  Which of the following is optional when configuring IS-IS on the Alcatel-Lucent 7750 SR?

  A. Configuring IS-IS interfaces

  B. Enabling IS-IS

  C. Configuring level capabilities

  D. Specifying an area address

  Correct Answer: C