101-500 Practice Test

Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

A.

dd if=/dev/zero of=/dev/sda bs=512

B.

dd if=/dev/zero of=/dev/sda bs=512 count=1

C.

dd if=/dev/zero of=/dev/sda bs=440 count=1

D.

dd if=/dev/zero of=/dev/sda bs=440

To what environment variable will you assign or append a value if you need to tell the dynamic linker to look in a build directory for some of a program's shared libraries?

A.

LD_LOAD_PATH

B.

LD_LIB_PATH

C.

LD_LIBRARY_PATH

D.

LD_SHARE_PATH

E.

LD_RUN_PATH

What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)

What is the difference between the -remove and the -purge action with the dpkg
command?

A.

--remove removes the program, --purge also removes the config files

B.

--remove only removes the program, --purge only removes the config files

C.

--remove removes a package, --purge also removes all packages dependent on it

D.

--remove removes only the package file itself, --purge removes all files related to the
package

After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?

A.

kill -HUP $(pidof grub)

B.

grub-install

C.

grub

D.

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