The ________ command is used to add a group to the system.

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What is true regarding the command sendmail?

• A.All MTAs, including Postfix and Exim, provide a sendmail command.
• B.The sendmail command prints the MTAs queue history of which mails have been sent successfully.
• C.It is only available when the sendmail MTA is installed.
• D.With any MTA, the sendmail command must be run periodically by the cron daemon.

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FILL BLANK
What command enables a network interface according to distribution-specific configuration, such as /etc/network/interfacesor /etc/sysconfig/network-scripts/ifcfg-eth0?
(Specify only the command without any path or parameters.)

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Which command, available with all MTAs, is used to list the contents of the MTA's mail queue? (Specify ONLY the command without any path or parameters.)

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Your senior administrator asked you to change the default background of his machine, which uses XDM. Which file would you edit to achieve this?

• A./etc/X11/xdm/Xsetup
• B./etc/X11/xdm/Defaults
• C./etc/X11/xdm.conf
• D./etc/X11/defaults.conf

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