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Exam 4A0-103 topic 3 question 14 discussion

Actual exam question from Alcatel-Lucent's 4A0-103
Question #: 14
Topic #: 3
[All 4A0-103 Questions]

Click on the exhibit.

All links have 1Gbps unreserved bandwidth initially and Shared Explicit reservation style is used. After the LSP's primary and standby secondary paths are signaled, how much unreserved bandwidth is left on the links?

  • A. R1-R2 will have 300Mbps left and R2-R4 will have 400Mbps left.
  • B. R1-R2 will have 400Mbps left and R2-R4 will have 400Mbps left.
  • C. R1-R2 will have 600Mbps left and R2-R4 will have 600Mbps left.
  • D. R1-R2 will have 300Mbps left and R2-R4 will have 600Mbps left.
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Suggested Answer: C

Comments

Ranx01
1 week, 1 day ago
"C" is correct, the secondary path is configured with the "standby" option. A secondary path configured as standby don't carry any "active" traffic until the primary path fails, hence 600mbs will be left on the links. (1000mbs - 400mbs = 600mbs)
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Aessedai
4 weeks ago
hi, anyone any idea here? I would have thought it would be D as well cos the secondary link is standby so it's signalled @ same time as primary?
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Aessedai
3 weeks, 6 days ago
Ignore, C is right.
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snowblack
4 months ago
D. R1-R2 will have 300Mbps left and R2-R4 will have 600Mbps left. is right answer
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snowblack
4 months ago
May be C is right. Because LSP2 at stanby state. Anyone have other ideal?
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