Nokia Nokia Certifications 4A0-101 Questions & Answers

• Question 61:

  How does an IS-IS router acknowledge the receipt of an IS-IS LSP on a point-to-point link?

  A. They are explicitly acknowledged by sending a CSNP to the sender identifying the LSP.

  B. They are implicitly acknowledged as a part of the link-state database synchronization and maintenance procedures.

  C. They are explicitly acknowledged by sending a PSNP to the sender identifying the LSP.

  D. They are implicitly acknowledged by the DIS multicast of CSNPs.

  Correct Answer: C

• Question 62:

  Click on the exhibit.

  

  192.168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3.

  Which of the following is a possible solution to the problem?

  A. Add the "originate-default-route" option in the NSSA area configuration on router R3.

  B. Add the "summaries" option to the NSSA area configuration on router R1.

  C. Configure a static route on router R1 to 192.168.3.1.

  D. Configure a default route on router R2.

  Correct Answer: B

• Question 63:

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

  A. An L1/L2 router can have adjacencies with routers 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 other L1 routers in the same area.

  D. An L1/L2 router sets the ATT bit in L1 LSPs to indicate that it has routes to other areas.

  Correct Answer: C

• Question 64:

  Which of the following is a valid IPv6 address equivalent to 2001:0da8:0000:0000:0024:0000:4ab9:0300?

  A. 2001:0da8:::0024:0000:4ab9:03

  B. 2001:0da8::0024::4ab9:0300

  C. 2001:da8::24::4ab9:300

  D. 2001:da8::24:0:4ab9:300

  Correct Answer: D

• Question 65:

  Click on the exhibit.

  

  OSPF is operational on all links in the network diagram, all links have the same cost and all routers are configured with an ECMP value of 4. Router R4 advertises the prefix 192.168.3.0/24 into OSPF.

  How many entries for prefix 192.168.3.0/24 will be l n router R1's routing table?

  A. 0

  B. 1

  C. 2

  D. 3

  E. 4

  Correct Answer: B

• Question 66:

  Click on the exhibit.

  

  A static route has been configured on router R1 to reach the PC at 139.120.121.2. What might be causing the ping to fail?

  A. Router R2 needs a static route to the PC.

  B. Router R2 needs a default to router R1.

  C. Router R1 needs a default route to router R2.

  D. The static route should use a next-hop of 172.31.1.2

  Correct Answer: D

• Question 67:

  Click on the exhibit.

  

  Given the contents of the Router LSA, which of the following best describes the local topology of the router?

  A. The router has a system interface, one point-to-point interface and one virtual link.

  B. The router has a system interface, one passive interface, one point-to-point interface and one virtual link.

  C. The router has a system interface, one point-to-point interface and one broadcast interface.

  D. The router has a system interface, one passive interface, one point-to-point interface and one broadcast interface.

  Correct Answer: C

• Question 68:

  Which is the OSPFv3 equivalent to the OSPFv2 Type 7 LSA?

  A. Intra-Area Prefix LSA

  B. Router LSA

  C. AS External LSA

  D. NSSA LSA

  Correct Answer: D

• Question 69:

  Which of the following regarding the IS-IS CSNP is FALSE?

  A. CSNPs are used to maintain consistency in the Link-State database.

  B. CSNPs are advertised before an adjacency is formed with another router.

  C. There are two types of CSNPs: Level 1 and Level 2.

  D. The CSNP lists the LSPs in the router's database

  Correct Answer: B

• Question 70:

  Click on the exhibit.

  

  What is the correct command to configure a default route on the Alcatel-Lucent 7750SR R2?

  A. config> static-route 0.0.0.0/0 next-hop 10.1.2.2

  B. config>router> static-route 0.0.0.0 255.255.255.255 next-hop 10.1.2.1

  C. config>router> static-route 0.0.0.0/0 next-hop 10.1.2.2

  D. config>router> static-route 0.0.0.0/0 next-hop 10.1.2.1

  Correct Answer: D