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Question 37 - JN0-351 discussion

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In RSTP, which three port roles are associated with the discarding state? (Choose three.)

A.
root
Answers
A.
root
B.
backup
Answers
B.
backup
C.
alternate
Answers
C.
alternate
D.
disabled
Answers
D.
disabled
E.
designated
Answers
E.
designated
Suggested answer: B, C, D

Explanation:

In Rapid Spanning Tree Protocol (RSTP), there are several port roles that determine the behavior of the port in the spanning tree123.The roles include root, designated, alternate, backup, and disabled123.

The discarding state is associated with the backup, alternate, and disabled roles123.In a stable topology with consistent port roles throughout the network, RSTP ensures that every root port and designated port immediately transition to the forwarding state while all alternate and backup ports are always in the discarding state2.Disabled ports are also in the discarding state3.

Therefore, options B, C, and D are correct.

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asked 18/09/2024
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