Which option is a typical example for a time source in time synchronization?

Which option is a typical example for a time source in time synchronization?

• A. Network Time Protocol server
• B. Paper clock
• C. Personal calendar app
• D. Local weather sensor

Answer: (A)

Time synchronization relies on a trustworthy source of the current time that devices can reach over the network. The Network Time Protocol server is designed to be that source, usually aligned to highly accurate reference clocks such as atomic clocks or GPS, and then distributing that time to multiple clients. By querying the NTP server, devices can adjust their own clocks to match a common reference, which is essential for proper log timestamps, coordinated tasks, and secure communications. A paper clock is simply a physical object and can’t provide real-time updates to other devices. A personal calendar app or a local weather sensor doesn’t offer a network-wide, authoritative time reference. So, the NTP server is the typical example of a time source.

Time synchronization relies on a trustworthy source of the current time that devices can reach over the network. The Network Time Protocol server is designed to be that source, usually aligned to highly accurate reference clocks such as atomic clocks or GPS, and then distributing that time to multiple clients. By querying the NTP server, devices can adjust their own clocks to match a common reference, which is essential for proper log timestamps, coordinated tasks, and secure communications. A paper clock is simply a physical object and can’t provide real-time updates to other devices. A personal calendar app or a local weather sensor doesn’t offer a network-wide, authoritative time reference. So, the NTP server is the typical example of a time source.