Which three commands are required to enable NTP authentication on a Cisco router? (Choose three)
A. ntp peer
B. ntp max-associations
C. ntp authenticate
D. ntp trusted-key
E. ntp authentication-key
F. ntp refclock
Which three commands are required to enable NTP authentication on a Cisco router? (Choose three)
A. ntp peer
B. ntp max-associations
C. ntp authenticate
D. ntp trusted-key
E. ntp authentication-key
F. ntp refclock