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4A0-C01 · Question #222

If an Alcatel-Lucent 7750 LSR receives a labeled packet with a outer label TTL of 250 and an inner label TTL of 251, which of the following statements is true?

The correct answer is B. The packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 251. See the full explanation below for the reasoning.

Question

If an Alcatel-Lucent 7750 LSR receives a labeled packet with a outer label TTL of 250 and an inner label TTL of 251, which of the following statements is true?

Options

  • AThe packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 250.
  • BThe packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 251.
  • CThe packet will be label switched; both the outer label TTL and the inner label TTL will be 250.
  • DThe packet will be label switched; both the outer label TTL and the inner label TTL will be 249, because they must be the same.

How the community answered

(25 responses)
  • A
    12% (3)
  • B
    76% (19)
  • C
    4% (1)
  • D
    8% (2)

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Full 4A0-C01 Practice