In a Cisco Unified Communications environment, which of the following CLI commands would you use to restart a cluster?

In a Cisco Unified Communications environment, which of the following CLI commands would you use to restart a cluster?

• utils cluster restart
• utils system restart
• utils system showdown
• system utils restart 

 EXPLANATION

Run the CLI command utils system shutdown or the command utils system restart.
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/10x/os_administration/guide/10xcucosag...

SOURCE

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/10x/os_administration/guide/10xcucosagx/10xcucosag050.html