When troubleshooting a Frame Relay connection, what is the first step when performing a
loopback test?
A.
Set the encapsulation of the interface to HDLC.
B.
Place the CSU/DSU in local-loop mode.
C.
Enable local-loop mode on the DCE Frame Relay router.
D.
Verify that the encapsulation is set to Frame Relay.
Explanation: