Refer to the exhibit.
Which reason explains why the Cisco ASA appliance cannot establish an authenticated NTP
session to the inside 192.168.1.1 NTP server?
A.
The ntp server 192.168.1.1 command is incomplete.
B.
The ntp source inside command is missing.
C.
The ntp access-group peer command and the ACL to permit 192.168.1.1 are missing.
D.
The trusted-key number should be 1 not 2.
Explanation:
http://www.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/basic.html#wp1067761
hostname(config)# ntp server ip_address [key key_id] [source interface_name][prefer]
ntp server 192.168.1.1 2