Which of the following commands will load a kernel module along with any required dependency modules?

• A.insmod
• B.loadmod
• C.module_install
• D.depmod
• E.modprobe

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When running the command
sed -e "s/a/b/" /tmp/file >/tmp/file
While /tmp/file contains data, why is /tmp/file empty afterwards?

• A.The command sed did not match anything in that file therefore the output is empty.
• B.Redirection for shell commands do not work using the > character. It only works using the | character instead.
• C.When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens itfor reading.
• D.The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.

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After running the command umount /mnt, the following error message is displayed:
umount: /mnt: device is busy.
What is a common reason for this message?

• A.The kernel has not finished flushing disk writes to themounted device.
• B.The kernel thinks that a process is about toopen a file in /mnt for reading.
• C.The files in /mnt have been scanned and added to the locate database.
• D.Another file system still contains a symlink to a file inside /mnt.
• E.A user has a file open in the /mnt directory.

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What is the maximum niceness value that a regular user can assign to a process with the nice command when executing a new process?

• A.49
• B.99
• C.19
• D.9

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Which of the following shell commands makes the already defined variable TEST visible to new child processes? (Choose two.)

• A.export -v TEST
• B.visible TEST
• C.declare +x TEST
• D.declare -x TEST
• E.export TEST

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