Refer to the exhibit.
Real 60
Cisco 640-875 Exam
A network administrator is setting up a new core router to be a secondary NTP server. What command would need to be added to NTP Client configuration shown?
A. NTP server 209.165.200.227 preferNTP server 209.165.200.226
B. NTP server 209.165.200.227NTP server 209.165.200.226 secondary
C. NTP server 209.165.200.227 preferNTP server 209.165.200.226 backup
D. NTP server 209.165.200.227NTP server 209.165.200.226 prefer