單項選擇題

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

微信掃碼免費搜題