You have configured a trunk between two switches, Switch A and Switch B, and have connectivity between the two switches. You receive a call from one of the other admins and the person informs you that they are seeing a number of errors. You inspect the trunks of both switches. What could be the problem? Refer to the following exhibit.

A. The trunk mode is incorrect between the two switches and should be ISL.
B. There is a native VLAN mismatch between the two switches.
C. VTP protocol is pruning VLAN 1 and VLAN 2 on Switch B.
D. Both switches do not have support for extended VLANs.

B. The native VLAN on Switch A is set to VLAN 2, and the native VLAN on Switch B is VLAN 1. This will cause mismatch errors with CDP, although CDP will still function, it will continue to generate errors.