Online Access Free 4A0-112 Exam Questions

Refer to the exhibit.

Routers R1 through R4 in the diagram have established IS-IS adjacencies. Router R1 is L1/L2 and is the DIS of its two broadcast interfaces. How many LSPs will it generate?

• A.3
• B.5
• C.2
• D.4

A new router is added to a broadcast network. What does IS-IS use as the tiebreaker for selecting the DIS if the priorities are the same?

• A.The Hello packet with the highest sequence number.
• B.The existing DIS remains the DIS.
• C.The router with the highest interface MAC address.
• D.The router with the highest system ID.

Consider the exhibit.

All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?

• A.There is no route leaking configured on router R1 or router R2.
• B.Route leaking is configured on router R2 but not on router R1.
• C.Route leaking is configured on router R1 but not on router R2.
• D.Route leaking is configured on both routers R1 and R2.

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

• A.In IS-IS, routers are associated with an area, not the interfaces.
• B.IS-IS uses the concept of level-1 and level-2 routers to implement hierarchy.
• C.A level-1 router forwards traffic to other areas through the nearest I eve I-1/1 eve I-2 router.
• D.A router becomes level-2 when it is associated with the backbone area.

Two IS-IS routers are exchanging Hello packets. One is configured to use authentication and the other is not. Which of the following statements is TRUE?

• A.An adjacency will not be established.
• B.An adjacency will be established with authentication using the default parameters defined for IS-IS routers.
• C.The two routers will negotiate the authentication parameters and the establish an adjacency.
• D.An adjacency will be established without authentication.