An administrator wishes to grant a user, john, the ability to restart the httpd service without providing a password. Which line should be added to the /etc/sudoers file to accomplish this?
john ALL=(ALL) /bin/systemctl restart httpd
john ALL=(ALL) NOPASSWD: /bin/systemctl restart httpd
john ALL=(ALL) NOPASSWD: ALL
john ALL=(ALL) NOPASSWD: systemctl restart httpd
The correct line to add is john ALL=(ALL) NOPASSWD: /bin/systemctl restart httpd. This allows the user john on all hosts (ALL) to execute the specific command /bin/systemctl restart httpd without being prompted for a password (NOPASSWD:). The ALL=(ALL) allows execution as all users and groups, although in this case, the specific command does not require changing to a different user or group. It's important to use full paths for commands in sudoers for security. The other options are incorrect because they either omit NOPASSWD: which would still prompt for a password, use ALL which would undesirably allow all commands, or specify an incorrect command path.
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