Networking & Internet
NTP
Definition
The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. It is one of the oldest Internet protocols in continuous use.
Why It Matters
Accurate time synchronization is critical for many aspects of computing, from logging and security to distributed systems. NTP ensures that computers all over the world have a consistent and accurate sense of time.
Contextual Example
Your computer's operating system is configured to periodically contact an NTP server (like `time.google.com`). It compares its own clock to the server's highly accurate atomic clock and makes adjustments as needed.
Common Misunderstandings
- Without NTP, the clocks on different computers would gradually drift apart.
- Accurate timestamps are essential for troubleshooting and correlating events across multiple systems.