A customer reports that it cannot establish a vPC peer link between two Cisco Nexus
5548UP Switches. The interfaces on both switches are configured and cabled correctly. The
interface status is up/down on switch 1 and up/up on switch 2. Which three steps are taken
to isolate the root cause? (Choose three.)

A.
determine whether the fiber-optic cable type (single mode or multimode) matches the X2
modules

B.
swap the fiber-optic cable with one known to be good

C.
swap the transceivers between the two interfaces

D.
swap the ends of the fiber-optic cable

E.
ask the customer if the link was ever functional