Nokia 4A0-112 Dumps Questions Answers

On broadcast interfaces there are different Hello packet types for level-1 and level-2 adjacencies, whereas on point-to-point interfaces there is a single Hello packet type.

The multicast MAC addresses to which the Hello messages are sent are different on broadcast interfaces and on point-to-point interfaces.

The neighbors are identified using their interface MAC addresses on broadcast Hello messages and using their system IDs on point-to-point Hello messages.

Broadcast Hello messages identify the elected designed IS (DIS) and point-to-point Hello messages do not.

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

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

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

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

The router sends back a copy of the LSP from its database to its neighbor.

The router updates its database with the LSP and floods a copy to its neighbors on other interfaces.

The router updated its database with the LSP, acknowledges the LSP with a PSNP, and floods a copy to its neighbors on other interfaces.

The router updates its database with the LSP and acknowledges it with a PSNP.