CCNA Routing and Switching (legacy) — Question 166

Which two protocols can detect native VLAN mismatch errors? (Choose two.)

Answer options

• A. STP
• B. PAgP
• C. Cisco Discovery Protocol
• D. DTP
• E. VTP

Correct answer: A, C

Explanation

The Spanning Tree Protocol (STP) and Cisco Discovery Protocol can both identify native VLAN mismatches, which can lead to network issues. On the other hand, PAgP, DTP, and VTP do not provide mechanisms for detecting these specific errors.