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4A0-103 · Question #139

Click on the exhibit. The path of a fast reroute protected LSP is R1-R2-R3. Which of the following about the protected LSP path is TRUE?

The correct answer is D. Router R1 is the LSP head-end and can be a PLR. See the full explanation below for the reasoning.

Question

Click on the exhibit. The path of a fast reroute protected LSP is R1-R2-R3. Which of the following about the protected LSP path is TRUE?

Exhibit

4A0-103 question #139 exhibit

Options

  • AAll routers along the path, R1, R2, and R3 can be PLRs.
  • BIf the R1-R2 link fails, router R4 becomes an MP.
  • CIf the R2-R3 link fails, router R3 becomes a PLR.
  • DRouter R1 is the LSP head-end and can be a PLR.

How the community answered

(22 responses)
  • A
    5% (1)
  • B
    9% (2)
  • C
    5% (1)
  • D
    82% (18)

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