What is the reason for this problem?

Refer to the exhibit.

An access point cannot join the Wireless LAN Controller when plugged to interface GigabitEthernet1/0/2. When the same access point is moved to interface GigabitEthernet1/0/1, the problem does not occur.

What is the reason for this problem?
A . GgabitEthernet1/0/2 is set as span session destination.
B . GgabitEthernet1/0/2 is still participating in Spanning Tree Protocol.
C . GgabitEthernet1/0/2 is set as portfast.
D . The switch is experiencing a hardware failure and it must be rebooted.

View Answer

Answer: C