Cisco Certified Network Professional Enterprise CCNP Enterprise · Free Practice Question Easy
Question 27
Examine the topology shown in the exhibit. If R5 learns of a destination prefix from EIGRP (internal), RIP, and OSPF, which will it believe if the routers are in their default configuration?
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A
None of these
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B
RIP
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C
EIGRP
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D
OSPF
Reveal correct answer
Correct answer: C
Explanation
The decision of which route to "believe" comes down to administrative distance. The lower the AD the better. Of these three protocols, EIGRP (internal) has the best AD at 90.
Connected interface: 0
Static route: 1
Exterior Border Gateway Protocol (eBGP): 20
Internal Enhanced Interior Gateway Routing Protocol (EIGRP): 90
Open Shortest Path First (OSPF): 110
Intermediate System to Intermediate System (IS-IS): 115
Routing Information Protocol (RIP): 120
External Enhanced Interior Gateway Routing Protocol (EIGRP): 170
Internal Border Gateway Protocol (iBGP): 200
Discussion
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