CCNA Routing and Switching (legacy) — Question 143

Which statement about LLDP is true?

Answer options

• A. It is a Cisco proprietary protocol.
• B. It is configured in global configuration mode.
• C. The LLDP update frequency is a fixed value.
• D. It runs over the transport layer.

Correct answer: B

Explanation

The correct answer is B because LLDP (Link Layer Discovery Protocol) is indeed configured in global configuration mode on network devices. Option A is incorrect as LLDP is an open standard protocol, not proprietary to Cisco. Option C is false because LLDP update intervals can be configured, and option D is incorrect since LLDP operates at the data link layer, not the transport layer.