Which command monitors the operations of the NTP daemon ntpd and determines performance?

Which command monitors the operations of the NTP daemon ntpd and determines performance?

• A. ntpd
• B. ntpq
• C. ntpdc
• D. ntpdate

Answer: (B)

Monitoring ntpd’s status and performance is done with a status query tool that talks to the running daemon to fetch its current state, the list of peers, and timing metrics. That tool is ntpq. It shows which peers ntpd is using, how reachable they are, and key timing statistics such as offset (the time difference), delay (round-trip time), and jitter (variance). By inspecting this output, you can verify whether ntpd is synchronized, identify the chosen synchronization source, and detect latency or instability affecting time accuracy. The other utilities serve different roles: ntpd starts and runs the time service, ntpdc is an older control interface for administering ntpd, and ntpdate simply sets the clock once from an NTP server rather than providing ongoing monitoring.

Monitoring ntpd’s status and performance is done with a status query tool that talks to the running daemon to fetch its current state, the list of peers, and timing metrics. That tool is ntpq. It shows which peers ntpd is using, how reachable they are, and key timing statistics such as offset (the time difference), delay (round-trip time), and jitter (variance). By inspecting this output, you can verify whether ntpd is synchronized, identify the chosen synchronization source, and detect latency or instability affecting time accuracy. The other utilities serve different roles: ntpd starts and runs the time service, ntpdc is an older control interface for administering ntpd, and ntpdate simply sets the clock once from an NTP server rather than providing ongoing monitoring.