When the command echo $$ outputs 12942, what is the meaning of 12942?

• A.It is the process ID of the last command executed.
• B.It is the process ID of the current shell.
• C.It is the process ID of the echo command.
• D.It is the process ID of the last command which has been placed in the background.

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Which of the following commands shows all active systemd timers?

• A.systemctl-timer show
• B.systemctl -t
• C.timectl list
• D.systemctl list-timers
• E.timeq

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What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)

• A.The user bob is removed from the system's user database.
• B.The user bob's home directory is removed.
• C.The locate database is updated to drop files owned by bob.
• D.All files owned by bob are remove from all mounted filesystems.
• E.In case bob was the last member of a group, that group is deleted.

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X is running okay but you're concerned that you may not have the right color depth set. What single command will show you the running color depth while in X?

• A.xcolordepth
• B.xcd
• C.cat /etc/X11
• D.xwininfo
• E.xcdepth

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Which parameter must be passed to ifconfig to activate a previously inactive network interface? (Specify the parameter only without any command, path or additional options)

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