In order to check if the interface serial 1/0/0 is work… admin 7 years ago In order to check if the interface serial 1/0/0 is working in either DCE or DTE mode, command ( ) is used. A. display mode serial 1/0/0 B. display controller C. display interface serial 1/0/0 D. display current-config Explanation: ← Previous question Next question →