Which of the following is true when a file system, which is neither listed in /etc/fstabnor known to system, is mounted manually?

• A.systemd ignores any manual mounts which are not done using the systemctl mountcommand
• B.The command systemctl mountsynccan be used to create a mount unit based on the existing mount
• C.systemctl unmountmust be used to remove the mount because system opens a file descriptor on the mount point
• D.systemd automatically generates a mount unit and monitors the mount point without changing it
• E.Unless a systemd mount unit is created, systemd unmounts the file system after a short period of time

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Which command must be entered before exiting vi to save the current file as filea.txt?

• A.%s filea.txt
• B.%w filea.txt
• C.:save filea.txt
• D.:w filea.txt
• E.:s filea.txt

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Which of the following commands will change the quota for a specific user?

• A.quota
• B.repquota
• C.edquota
• D.quota -e

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A yum repository can declare sets of related packages. Which yumcommand installs all packages belonging to the group admintools?
yum pkgsel --install admintools

• A.
• B.yum taskinstall admintools
• C.yum collection install admintools
• D.yum install admintools/*
• E.yum groupinstall admintools

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Which of the following statements is correct for a command ending with an &character?

• A.The command's output is redirected to /dev/null.
• B.The command is run in background of the current shell.
• C.The command's output is executed by the shell.
• D.The command is run as a direct child of the initprocess.
• E.The command's input is read from /dev/null.

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