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Question 24 - 4A0-115 discussion

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Which of the following best describes the operation of a non-designated forwarder (non-DF) in a single-active Ethernet segment?

A.
Blocks Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
Answers
A.
Blocks Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
B.
Allows Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
Answers
B.
Allows Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
C.
Blocks Tx unicast, blocks Rx unicast, blocks Tx BUM, blocks Rx BUM
Answers
C.
Blocks Tx unicast, blocks Rx unicast, blocks Tx BUM, blocks Rx BUM
D.
Allows Tx unicast, blocks Rx unicast, allows Tx BUM, blocks Rx BUM
Answers
D.
Allows Tx unicast, blocks Rx unicast, allows Tx BUM, blocks Rx BUM
Suggested answer: A

Explanation:

A non-designated forwarder (non-DF) in a single-active Ethernet segment blocks Tx unicast, allows Rx unicast, blocks Tx BUM, and allows Rx BUM. This prevents traffic duplication and ensures that only the DF forwards traffic to and from the CE.

asked 23/09/2024
Welber Santos de Oliveira
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