050-720 Online Practice Questions and Answers

Which commands can be used if you do not find the desired information in a manual page, or find no manual page at all for a program?

A. sos program

B. info program

C. help program

D. wiki program

How do you start a YaST module (for instance, the sw_single module used to install software) directly from the command line? (Choose 2.)

A. yast sw_single

B. yast2 sw_single

C. yast2 -m sw_single

D. yast --start sw_single

E. yast2 --module sw_single

You have a text file that contains empty lines. Using grep and regular expressions, which command displays the file without the empty lines?

A. grep ^$ file

B. grep [\ ] file

C. grep -v ^$ file

D. grep -v #$ file

Which statement regarding symbolic links is true? (Choose 2.)

A. A symbolic link can point to a file on a different file system.

B. A symbolic link and the file it points to share the same inode.

C. If you delete the symbolic link, the original file is deleted as well.

D. If you delete the original file, the symbolic link points to a non-existing file.

E. With a symbolic link, you cannot see directly that it is a link.

Which statements about the Linux boot process are correct? (Choose 3.)

A. The BIOS starts the kernel.

B. The initrd decompresses itself.

C. The kernel looks for and mounts the initrd.

D. The boot manager starts the init process.

E. linuxrc loads the modules to mount the root file system.

F. The boot manager loads the kernel and initrd into the memory.

The GRUB configuration file (/boot/grub/menu.lst) has a global section followed by sections for each operating system. Which options do you have to specify for each Linux operating system? (Choose 3.)

A. title

B. color

C. initrd

D. kernel

E. timeout

F. gfxmenu

G. message

You created a script (/root/bin/backup.sh) that backs up your files when executed. Using cron, you want to execute this script once every Saturday at 3:00 pm. Which line would you have to enter after invoking crontab - e in a terminal window?

A. 15 0 * * 6 /root/bin/backup.sh

B. 0 15 * * 6 /root/bin/backup.sh

C. 0 15 * 6 * /root/bin/backup.sh

D. 15 0 * * 6 root /root/bin/backup.sh

You want to view the status (locked, valid password, etc.) of the account tux. Which command displays the desired information?

A. passwd -L tux

B. passwd -v tux

C. passwd -p tux

D. passwd -S tux

You have a test directory with the following permissions: rwx------ You want to change the permissions to the following values: r-xr-xr-x. Which command accomplishes this?

A. chmod 777 test

B. chmod a=rx test

C. chmod u=rx,a-rx test

D. chmod u+w,g+rx,o+rx test

What does the following line of the sudo configuration file mean? geeko ALL = /sbin/shutdown

A. All users are allowed to shut down the computer.

B. It allows the user geeko to shut down the computer.

C. All users (except geeko) are allowed to shut down the computer.

D. User geeko is allowed to shut down the computer with name ALL.

E. All users of the computer with the name geeko are allowed to shut down the computer.