Which protocol must be allowed on the firewall so that NTP services work properly?

Which protocol must be allowed on the firewall so that NTP services work properly?
A . ICMP
B . BGP
C . UDP
D . TCP

View Answer

Answer: C

Explanation:

Reference: https://www.cisco.com/c/en/us/support/docs/ip/network-time-protocol-ntp/108076-ntp-troubleshoot.html