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Exam 4A0-102 topic 1 question 42 discussion

Actual exam question from Alcatel-Lucent's 4A0-102
Question #: 42
Topic #: 1
[All 4A0-102 Questions]

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Routers RR1 and RR2are route reflectors with clients R1x and R2x, respectively. Routers RR1 and RR2 are non-clients of each other, and router R1 is a non-client of both. Which of the following regarding BGP sessions in AS 65540 is TRUE?

  • A. Router R1must have at least one BGP session to each of routers R1x and R2x.
  • B. Routers R1, RR1 and RR2 must be fully meshed.
  • C. Routers R1x and R2x must have at least one BGP session between them.
  • D. Routers R1x as well as routers R2x must be fully meshed.
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Suggested Answer: B 🗳️

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ablongo
4 months, 1 week ago
R1, RR1 and RR2 already is a full mesh. It must not be because it already is!
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ablongo
4 months, 1 week ago
Correct Answer: A Router R1 is a non-client of both. So it will not receive route updates from RRs that was originated from R1x or R2x. To fix this, a BGP peer with each one of R1x and R2x are needed.
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