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Exam 4A0-101 topic 1 question 50 discussion

Actual exam question from Alcatel-Lucent's 4A0-101
Question #: 50
Topic #: 1
[All 4A0-101 Questions]

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Given the diagram below, what path will traffic follow from router R6 to router R3, and from router R3 to router R6, if IS-IS is the routing protocol? The numbers beside the links are the metrics for that link.

  • A. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3- R2-R5-R6).
  • B. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3-R4-R2-R5-R6).
  • C. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3-R4-R7-R5-R6).
  • D. Router R6 to router R3 will follow (R6-R5-R7-R4-R3). Router R3 to router R6 will follow (R3-R4-R7-R5-R6).
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Suggested Answer: C 🗳️

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ocenic
4 years, 4 months ago
R3 has default route from R4 that has better metric than default route from R2. R4 has better metric over R7 than over R2 to R5. So C is correct.
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SajjadKarim
4 years, 4 months ago
I think Answer is D, As link cost between R2 and R3 is 15
upvoted 1 times
SajjadKarim
4 years, 4 months ago
Sorry answer C is correct
upvoted 1 times
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