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Exam 350-401 topic 1 question 387 discussion

Actual exam question from Cisco's 350-401
Question #: 387
Topic #: 1
[All 350-401 Questions]

Which time protocol offers security features and utilizes site-local IPv6 multicast addresses?

  • A. NTPv3
  • B. PTP IEEE 1588v1
  • C. NTPv4
  • D. PTP IEEE 1588v2
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Suggested Answer: C 🗳️
by kebkim at Sept. 17, 2022, 11:32 a.m.

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[Removed]
7 months ago
Selected Answer: C
C is correct
upvoted 1 times
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Asymptote
1 year, 11 months ago
Selected Answer: C
NTPv4 is an extension of NTP version 3, which supports both IPv4 and IPv6. Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/bsm/configuration/15-0sy/ip6-ntpv4.html#:~:text=NTPv4%20is%20an%20extension%20of%20NTP%20version%203%2C%20which%20supports%20both%20IPv4%20and%20IPv6.
upvoted 2 times
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kebkim
2 years, 3 months ago
The Network Time Protocol (NTP) is widely used to synchronize computer clocks in the Internet. This document describes NTP version 4 (NTPv4), which is backwards compatible with NTP version 3 (NTPv3), described in RFC 1305, as well as previous versions of the protocol. NTPv4 includes a modified protocol header to accommodate the Internet Protocol version 6 address family. https://www.rfc-editor.org/rfc/rfc5905.html
upvoted 4 times
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