To prevent a specific user from scheduling tasks with at, what should the administrator do?

To prevent a specific user from scheduling tasks with at, what should the administrator do?
A .  Add the specific user to /etc/at.allow file.
B .  Add the specific user to [deny] section in the /etc/atd.conf file.
C .  Add the specific user to /etc/at.deny file.
D .  Add the specific user to nojobs group.
E .  Run the following: atd –deny [user].

View Answer

Answer: C