To prevent a specific user from scheduling tasks with at, what should the administrator do?
Click on the arrows to vote for the correct answer
A. B. C. D. E.C
The correct answer is C. Add the specific user to /etc/at.deny file.
Explanation: The at command in Linux allows a user to schedule a task to run at a specified time in the future. To prevent a specific user from using the at command, the system administrator should add the user to the /etc/at.deny file. This file lists users who are not allowed to use the at command.
Option A is incorrect because the /etc/at.allow file lists users who are allowed to use the at command. Adding the user to this file would not prevent them from using the at command.
Option B is incorrect because there is no [deny] section in the /etc/atd.conf file. Even if such a section existed, adding the user to it would not prevent them from using the at command.
Option D is incorrect because there is no nojobs group in Linux. Even if such a group existed, adding the user to it would not prevent them from using the at command.
Option E is incorrect because the atd --deny command is not a valid command. There is no --deny option for the atd command.
Therefore, the correct answer is to add the specific user to the /etc/at.deny file.