Nokia 4A0-C03 Certification Practice Questions & Answers

Question 6 of 61

Which of the following is a type of authentication that is supported by IS-IS on the Nokia 7750 SR?

A.

Challenge handshake authentication protocol (CHAP)

B.

Two-factor authentication

C.

MD5 message digest authentication

D.

Extensible authentication protocol (EAP)

Question 7 of 61

Which of the following statements about IS-IS is FALSE?

A.

IS-IS uses the concept of level-1 and level-2 routers to implement hierarchy.

B.

In IS-IS, routers are associated with an area, not the interfaces.

C.

A router becomes level-2 when it is associated with the backbone area.

D.

A level-1 router forwards traffic to other areas through the nearest level-1/level-2 router.

Question 8 of 61

Which of the following statements best describes the protocol stack that IS-IS routers use to exchange control messages?

A.

Control messages are transmitted inside UDP packets.

B.

Control messages are transmitted inside IP multicast packets.

C.

Control messages are encapsulated inside Ethernet multicast frames.

D.

Control messages are encapsulated inside IP packets sent to the subnet broadcast address.

Question 9 of 61

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

A.

CSNP messages are used to maintain consistency in the link-state databases of neighboring routers,

B.

CSNP messages are exchanged by routers before an adjacency is formed between them.

C.

Separate CSNP messages are used to describe the contents of the level-1 and level-2 link-state databases.

D.

CSNP messages are used to describe the full list of LSPs in a router's link-state database.

Question 10 of 61

Examine the physical topology of the IS-IS network, the metrics of the links and the levels of the routers. All routers have their system interfaces included in IS-IS. Which of the following statements describes the route-table entry that router R4 will use to reach router R6's system IP address?

A.

Router R4 will have a route to router R6's system IP address with router R3 as the next-hop.

B.

Router R4 will have a default route with router R2 as the next-hop.

C.

Router R4 will have a default route with router R3 as the next-hop.

D.

Router R4 will not have a matching entry in its routing table for router R6's system IP address.