Where do stratum 1 NTP servers get time from?
- Averaging time from other trusted sources
- A stratum 2 clock
- A reference clock
- They generate it internally
EXPLANATION
Stratum 1 NTP servers are the highest, most trusted order of NTP servers. They receive their time by being directly connected to a reference clock, typically an atomic clock. Reference clocks are also referred to as stratum 0 devices.
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