Home » Cisco » 210-260 v.2 » Which network device does NTP authenticate?
Which network device does NTP authenticate?
A. Only the time source
B. Only the client device
C. The firewall and the client device
D. The client device and the time source
Correct Answer: A
Explanation/Reference:
NTP authentication, the device synchronizes to a time source only if the source carries one of the authentication keys specified by the ntp trusted-key command. The device drops any packets that fail the authentication check and prevents them from updating the local clock. NTP authentication is disabled by default.
Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/system_management/configuration/guide/sm_nx_os_cg/sm_3ntp.html#wp1100303