Which of the following options can be used with the usermod command to lock a user's password?Select one:a.-Ub.-gc.-Nd.-L

1. Break Down the Problem

We need to determine which option can be used with the usermod command to lock a user's password from the given options.

2. Relevant Concepts

The usermod command in Linux is used to modify a user's account. Locking a user's password is done to prevent the user from logging in.

3. Analysis and Detail

Here are the available options:

1. -U: This option is used to unlock a user's account.
2. -g: This option is used to change the primary group of the user.
3. -N: This option is used to disable the user's password, but does not lock it.
4. -L: This option is used to lock a user's password, preventing the user from logging in.

4. Verify and Summarize

After reviewing the options, the correct option to lock a user’s password is -L, as it directly serves the intended purpose of preventing login access.

Final Answer

The correct option to lock a user's password using the usermod command is d. -L.