Which statemetn is true regarding the Network Time Protocol (NTP) on Junos devices?
A.
MD5 authenticaton is supported by the Junos OS
B.
Server mode is not supported by the Junos OS
C.
The Junos OS can provide a primarytime reference
D.
The Junos OS does not support the use of a boot server
The server statement identifies the NTP server used for periodic time synchronization. The authentication-key statement specifies that an HMAC-Message Digest 5 (MD5) scheme is used to hash the key value for authentication, which prevents the switch from synchronizing with an attacker’s host that is posing as the time server.
http://www.juniper.net/techpubs/en_US/junos12.1/topics/example/ntp-qfx-series.html
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By default, your router queries time to whichever NTP servers appear to be most accurate. To ensure that routers receive time only from known and trusted sources, enable NTP authentication. The JUNOS implementation of NTP uses MD5 for authentication. You set up one or more trusted keys. Each key is identified by a number, here 12, and you establish a password for each key in the value option of the authentication-key statement.
http://flylib.com/books/en/2.516.1.103/1/
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