多选题Which two statements are true regarding the use of NTP clock synchronization?（）AThe Junos OS supports client, server, and symmetric modes of NTP operation.BSynchronized time on all network devices makes log messages more useful for troubleshooting.CAuthentication methods are not supported.DThe Junos OS must be used as the primary time reference.
多选题
Which two statements are true regarding the use of NTP clock synchronization?（）
A
The Junos OS supports client, server, and symmetric modes of NTP operation.
B
Synchronized time on all network devices makes log messages more useful for troubleshooting.
C
Authentication methods are not supported.
D
The Junos OS must be used as the primary time reference.
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