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單項(xiàng)選擇題

Which procedure should be used to configure the system to prevent all users from using the ‘a(chǎn)t’ command?()

A.Create a /var/adm/cron/at.allow file with no entries
B.Create a /var/adm/cron/at.deny file with '*' as the only entry
C.Create a /var/adm/at/at.deny file with 'ALL' as the only entry
D.Create a /var/adm/at/at.allow file with 'NONE' as the only entry

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