LX0-103 Online Practice Questions and Answers

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. No action is required

Which of the following commands updates the linker cache of shared libraries?

A. mkcache

B. soconfig

C. mkldconfig

D. lddconfig

E. ldconfig

Which function key is used to start Safe Mode in Windows NT?

A. F10

B. F8

C. F6

D. Windows NT does not support Safe Mode

In Bash, inserting 1>and2 after a command redirects

A. standard error to standard input.

B. standard input to standard error.

C. standard output to standard error.

D. standard error to standard output.

E. standard output to standard input.

A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory?

A. rmdir '~/\dir'

B. rmdir "~/\dir"

C. rmdir ~/'dir'

D. rmdir ~/\dir

E. rmdir ~/\\dir

What is the effect of the egrep command when the -v option is used?

A. It enables color to highlight matching parts.

B. It only outputs non-matching lines.

C. It shows the command's version information.

D. It changes the output order showing the last matching line first.

Which of the following commands displays the contents of a gzip compressed tar archive?

A. gzip archive.tgz | tar xvf

B. tar ztf archive.tgz

C. gzip -d archive.tgz | tar tvf

D. tar cf archive.tgz

Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard?

A. SIGTERM

B. SIGINT

C. SIGSTOP

D. SIGKILL

Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?

A. chmod u=rwx,go=rx /bin/foo

B. chmod o+rwx,a+rx /bin/foo

C. chmod 577 /bin/foo

D. chmod 775 /bin/foo

Which command displays a list of all background tasks running in the current shell? (Specify ONLY the command without any path or parameters.)