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QUESTION: 77

Which file specifies the user accounts that can NOT submit jobs via at or batch? (Provide the full path and filename)

/etc/at.deny

Answer(s): A

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QUESTION: 78

What is the conventional purpose of Linux UIDs that are lower than 100?

They are reserved for super user accounts.
They are reserved for the system admin accounts.
They are reserved for system accounts.
They are unused, aside from 0, because they are targets of exploits.
They are used to match with GIDs in grouping users.

Answer(s): C

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QUESTION: 79

Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)

groupadd, /usr/sbin/groupadd

Answer(s): A

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QUESTION: 80

Why is /etc/shadow not world readable if the passwords are stored in an encrypted fashion?

The encrypted passwords are still subject to brute force attacks.
This is just for historical reasons.
There is other information in the file that needs to be kept secret.
The passwords can be decrypted by anyone with root access.

Answer(s): A

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