Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 861:

  What are the three databases maintained by a Link State Protocol?

  A. Neighbor, adjacency, route table

  B. Neighbor, topology, forwarding

  C. Topology, routing, forwarding

  D. There are only two databases: adjacency and topology

  Correct Answer: B

• Question 862:

  What are the ways the RID can be created on an Alcatel-Lucent 7750 SR router? (Choose three) A. From the last 32 bits of the chassis MAC address

  B. From the first 32 bits of the chassis MAC address

  C. The loopback IP address

  D. By using the command "config router ospf rid X.X.X.X"

  E. From the system IP address

  F. From the highest interface IP address

  Correct Answer: ADE

• Question 863:

  How many databases does a Link State routing protocol use?

  A. One

  B. Two

  C. Three

  D. Four

  Correct Answer: C

• Question 864:

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

  A. L1 and L2 routers elect separate DIS's.

  B. DIS uses multicast address 0180x200:0015 to communicate with other routers on the broadcast network.

  C. If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS.

  D. In broadcast multi-access networks, such as Ethernet, a single router is elected as the DIS. There is no backup DIS

  Correct Answer: B

• Question 865:

  Click the exhibit button.

  

  The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?

  A. The adjacency state is two way because both routers have received a database description packet.

  B. The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.

  C. The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.

  D. The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.

  Correct Answer: C

• Question 866:

  Given the NSAP address of 49.0012.1234.1234.1234.00, what area does the IS-IS router reside in?

  A. 49.0012.1234

  B. 49.0012

  C. 12.1234

  D. 1234

  E. 49.1234

  Correct Answer: B

• Question 867:

  Click the exhibit button.

  

  The following command sequence is executed on router R2:

  A:

  R2# configure router ospf router-id 10.10.10.99

  A:

  R2# configure router router-id 10.10.10.66

  On router R1, what router ID appears for router R2 directly after these commands are executed?

  A.

  10.10.10.99

  B.

  10.10.10.66

  C.

  10.10.10.2

  D.

  10.10.10.1

  Correct Answer: C

• Question 868:

  Which of the following features are supported by IS-IS? Choose three answers.

  A. PDU authentication.

  B. The ability to customize the link cost metric.

  C. Use of Bellman-Ford routing algorithm.

  D. Classless routing.

  E. Updates sent as layer 3 multicast.

  Correct Answer: ABD

• Question 869:

  Click the exhibit button.

  

  

  The OSPF adjacency between routers R3 and R1 is down. What is the problem?

  A. Area 1 of router R1 should not be configured as a stub.

  B. Router R3 has the incorrect authentication key type.

  C. Router R1 has the incorrect authentication key type.

  D. There is not enough information to tell.

  Correct Answer: C

• Question 870:

  From the list below select the statements that describe the behavior of link state information aging. (Choose 2)

  A. The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS

  B. The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS

  C. The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database.

  D. The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router.

  Correct Answer: AC