O'Reilly logo

Cisco CCNA/CCENT Exam 640-802, 640-822, 640-816 Preparation Kit by Dale Liu

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

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 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required