200-301 · Question #703
Which NTP type designates a router without an external referee clock as an authoritative time source ?
The correct answer is D. master. An NTP master designates a router as an authoritative time source, even if it does not synchronize with an external reference clock. This allows it to act as the primary time source for other NTP clients on the network.
Question
Options
- AClient
- BServer
- Cpeer
- Dmaster
How the community answered
(18 responses)- B6% (1)
- C6% (1)
- D89% (16)
Why each option
An NTP master designates a router as an authoritative time source, even if it does not synchronize with an external reference clock. This allows it to act as the primary time source for other NTP clients on the network.
An NTP client requests time from an NTP server but does not act as an authoritative time source itself.
An NTP server provides time, but a "master" specifically implies it is the authoritative source, often without an external referee clock, using a specific stratum level.
An NTP peer exchanges time information with another peer, and they can synchronize with each other, but a "master" is a designated authoritative source.
An NTP master is a router configured to act as an authoritative time source, typically when no external stratum 1 clock is available or desired. It serves time to other NTP clients and peers in the network.
Concept tested: NTP master configuration
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_ntp/configuration/xe-3s/ntp-xe-3s-book/ntp-cfg-ntp.html
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