READ Free Dumps For CISCO- 100-105
| Question ID 14463 | Which characteristics are representative of a link-state routing protocol? (Choose three.)
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| Option A | provides common view of entire topology
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| Option B | exchanges routing tables with neighbors
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| Option C | calculates shortest path
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| Option D | utilizes event-triggered updates
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| Option E | utilizes frequent periodic updates
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| 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?
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| Option A | R2 and R3
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| Option B | R1 and R3
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| Option C | R3 and S2
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| Option D | R1, S1, S2, and R3
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| Option E | R1, S1, S2, R3, and S3
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| 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.