What effect does the -foption to the update-rc.dcommand have on files in the /etc/rcX.d/and / etc/init.d/directories?

• A.It will remove the init script in /etc/init.d/and the symlinks in /etc/rcX.d/and update the package information of installed files
• B.It will force the removal of symlinks in /etc/rcX.d/even if the corresponding init script still exists in / etc/init.d/
• C.It will force the removal of the symlinks in /etc/rcX.d/even when the links are read only
• D.It will remove both the symlinks in /etc/rcX.d/and the init script in /etc/init.d/

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CORRECT TEXT
The users of the local network complain that name resolution is not fast enough. Enter the command, without the path or any options, that shows the time taken to resolve a DNS query.

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With which command can the reserved blocks count for a file-system be seen? (Please enter only the command without the path or any parameters or options)

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CORRECT TEXT
What command discards unused blocks on a mounted file system in order to support SSD devices? (Specify ONLY the command without any path or parameters.)

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When building an RPM package, which rpmbuild option is used to unpack sources and apply patches before proceeding with the next steps?

• A.-ba
• B.-bs
• C.-bp
• D.-be
• E.-bb

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