Which action fixes the issue?

Refer to the exhibit.

Traffic is not passing between SW1 and SW2 .

Which action fixes the issue?
A . Configure LACP mode on S1 to passive.
B . Configure switch port mode to ISL on S2.
C . Configure PAgP mode on S1 to desirable.
D . Configure LACP mode on S1 to active.

View Answer

Answer: C