ICND1: Interconnecting Cisco Networking Devices Part 1 (CCENT, legacy) — Question 60

By default, which speed does an interface attempt to negotiate if IEEE autonegotiation is enabled on only one side of a link?

Answer options

• A. speed of the neighbor side of the link
• B. slowest supported speed of the interface
• C. fastest supported speed of the interface
• D. average supported speed of the two interfaces

Correct answer: C

Explanation

When IEEE autonegotiation is enabled on only one side of a link, the interface defaults to negotiating the fastest supported speed it can achieve. The other options are incorrect because the interface does not negotiate based on the neighbor's speed, the slowest speed, or an average speed when only one side is configured for autonegotiation.