CCNA Routing and Switching (legacy) — Question 123

Which DTP switch port mode allows the port to create a trunk link if the neighboring port is in trunk mode, dynamic desirable mode, or desirable auto mode?

Answer options

• A. trunk
• B. access
• C. dynamic desirable
• D. dynamic auto

Correct answer: C

Explanation

The correct answer is C, dynamic desirable, as this mode allows a port to initiate a trunk link with suitable neighboring ports. Options A (trunk) and B (access) do not support dynamic negotiation, while D (dynamic auto) is more passive and will only respond to requests rather than initiate a trunk link.