200-301 Question #115: Real Exam Question with Answer & Explanation

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.

Explanation

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.

Common mistakes.

• C. Cisco routers are not restricted to acting only as NTP servers; they can also operate as clients to receive time updates.
• D. Cisco routers are not restricted to acting only as NTP clients; they can also serve time to other devices.
• E. NTP uses UDP over IP for its communication, not TCP over IP.

Concept tested. NTP protocol fundamentals

Reference. 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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