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Question 142 - ANS-C00 discussion

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You have 4 Direct Connect connections from your datacenter. Site A advertises 172.16.0.0/16 AS 65000, Site B advertises 172.16.0.128/25 AS 65000 65000 65000, Site C advertises 172.0.0.0/8 AS 65000 and Site D advertises 172.16.0.0/24 AS 65000. Which site will AWS choose to reach your network?

A.
Site A: 172.16.0.0/16 AS 65000
Answers
A.
Site A: 172.16.0.0/16 AS 65000
B.
Site B: 172.16.0.128/25 AS 65000 65000 65000
Answers
B.
Site B: 172.16.0.128/25 AS 65000 65000 65000
C.
Site C: 172.0.0.0/8 AS 65000
Answers
C.
Site C: 172.0.0.0/8 AS 65000
D.
Site D: 172.16.0.0/24 AS 65000
Answers
D.
Site D: 172.16.0.0/24 AS 65000
Suggested answer: B

Explanation:

Explanation:

172.16.0.128/25 AS 65000 65000 65000. The most specific prefix is always the first choice for BGP routing. Also, AWS will not accept an advertisement of a network less than /16.

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asked 16/09/2024
Austine Ogheneruemu Onakpoma
42 questions
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