1. A Cisco router at your location is no longer connecting your company to the Internet; you have noticed that users can no longer access resources on the VPN and the public Internet. You have a T1 connection to the Internet and you are the data terminal interface (DTE) side of the serial (Frame Relay) link. You have issued the show IP interface brief command and see that your CSU/DSU interface has the status of up and the protocol down. What command will tell you if the clock from the DCE is set?
A. Router1# show controllers s0
B. Router1(config#) show controllers s0
C. Router1# show clock setting
D. Router1# show clockrate
E. Router(config-if)# show clockrate
Correct Answer & Explanation:A. The show controllers command will show you not only you ...

Get Cisco CCNA/CCENT Exam 640-802, 640-822, 640-816 Preparation Kit now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.