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Question ID 14463

Which characteristics are representative of a link-state routing protocol? (Choose three.)

Option A

 provides common view of entire topology

Option B

exchanges routing tables with neighbors

Option C

calculates shortest path

Option D

utilizes event-triggered updates

Option E

utilizes frequent periodic updates

Correct Answer A,C,D
Explanation Explanation: Each of routers running link-state routing protocol learns paths to all the destinations in its area so we can say although it is a bit unclear. Link-state routing protocols generate routing updates only (not the whole routing table) when a change occurs in the network topology so Link-state routing protocol like OSPF uses Dijkstra algorithm to calculate the shortest path - > . Unlike Distance vector routing protocol (which utilizes frequent periodic updates), link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs) ->


Question ID 14464

Refer to the exhibit.

If CDP is enabled on all devices and interfaces, which devices will appear in the output of a
show cdp neighbors command issued from R2?

Option A

 R2 and R3

Option B

R1 and R3

Option C

R3 and S2

Option D

 R1, S1, S2, and R3

Option E

R1, S1, S2, R3, and S3

Correct Answer C
Explanation Explanation: A Cisco device enabled with CDP sends out periodic interface updates to a multicast address in order to make itself known to neighbors. Since it is a layer two protocol, these packets are not routed. So the devices detected would be immediate connected neighbors.

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