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Exam 400-101 All Questions

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Exam 400-101 topic 1 question 278 discussion

Actual exam question from Cisco's 400-101
Question #: 278
Topic #: 1
[All 400-101 Questions]

Refer to the exhibit.

How can Router X in AS70000 peer with Router Y in AS65000, in case Router Y supports only 2- byte ASNs?

  • A. Router X should be configured with a remove-private-as command, because this will establish the peering session with a random private 2-byte ASN.
  • B. It is not possible. Router Y must be upgraded to an image that supports 4-byte ASN.
  • C. Router Y should be configured with a 4-byte AS using the local-as command.
  • D. Router X should be configured with a 2-byte AS using the local-as command.
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Suggested Answer: D 🗳️
Since router Y does not support 4-byte ASN,s it will not understand any AS numbers larger than 65535, so router X should use the local-as command on the peering statement to router Y to so that it sends in a 2-byte ASN to router Y.

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