H12-821_V1.0 Exam Dumps | Which of the following is used as the destination port for single-hop BFD?

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Question 76/107

Which of the following is used as the destination port for single-hop BFD?

A. UDP port 3784

B. UDP port 4784

C. TCP port 3784

D. TCP port 4784

Correct Answer: A

Comprehensive and Detailed Step-by-Step Explanation:
* Single-Hop BFD:
* Single-hop BFD is used for detecting link failures in directly connected devices.
* It uses UDP port 3784 for communication.
* Multi-Hop BFD:
* For multi-hop scenarios, BFD uses UDP port 4784 to ensure end-to-end connectivity.
Incorrect Options:
* TCP ports 3784 and 4784 (C and D): BFD does not use TCP.
References:
* HCIA-Datacom Study Guide, Chapter: BFD Ports and Functions
* Huawei BFD Configuration Details

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