After installing and configuring Cisco CMX, an administrator must change the NTP server on the...

To change the NTP server on the Cisco CMX server, the administrator should log in to the Cisco CMX CLI and issue the command set ntp server NTP_IP, where NTP_IP is the IP address of the new NTP server. This method is straightforward and does not require manual editing of configuration files or restarting the entire server. References: The process for changing the NTP server on a Cisco CMX server is detailed in the official certification guide, which provides step-by-step instructions for using the CLI.