200-301 · Question #115
Which two statements about NTP operations are true? (Choose two.)
The correct answer is A. NTP uses UDP over IP. B. Cisco routers can act as both NTP authoritative servers and NTP clients.. NTP (Network Time Protocol) operates over UDP, and Cisco routers are capable of functioning as both NTP servers, providing time, and NTP clients, synchronizing their own time.
Question
Which two statements about NTP operations are true? (Choose two.)
Options
- ANTP uses UDP over IP.
- BCisco routers can act as both NTP authoritative servers and NTP clients.
- CCisco routers can act only as NTP servers.
- DCisco routers can act only as NTP clients.
- ENTP uses TCP over IP.
How the community answered
(34 responses)- A91% (31)
- C3% (1)
- D6% (2)
Why each option
NTP (Network Time Protocol) operates over UDP, and Cisco routers are capable of functioning as both NTP servers, providing time, and NTP clients, synchronizing their own time.
NTP uses User Datagram Protocol (UDP) as its transport layer protocol, operating on port 123 for time synchronization communication.
Cisco routers can be configured to act as NTP clients to synchronize their internal clock with an external NTP server, and also as NTP servers to provide time services to other devices on the network.
Cisco routers are not restricted to acting only as NTP servers; they can also operate as clients to receive time updates.
Cisco routers are not restricted to acting only as NTP clients; they can also serve time to other devices.
NTP uses UDP over IP for its communication, not TCP over IP.
Concept tested: NTP protocol fundamentals
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ntp/configuration/xe-3s/ntp-xe-3s-book/nm-ntp-config.html
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