LFCS Exam Training Practice Tests (Linux Foundation Certified System Administrator)]

Question 1

CORRECT TEXT
The system's timezone may be set by linking /etc/localtime to an appropriate file in which directory? (Provide the full path to the directory, without any country information)

Correct Answer:

/usr/share/zoneinfo/

Question 2

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. A user has a file open in the /mnt directory. B. The kernel thinks that a process is about to open 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. The kernel has not finished flushing diskwrites to the mounted device.

Correct Answer: A

Question 3

CORRECT TEXT
Which Debian package management tool asks the configuration questions for a specific already installed package just as if the package were being installed for the first time? (Specify ONLY the command without any path or parameters.)

Correct Answer:

dpkg -reconfigure

Question 4

What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)

A. To dynamically create or delete logical volumes. B. To create snapshots. C. To create RAID 9 arrays. D. To dynamically change the size of logical volumes. E. To encrypt logical volumes.

Correct Answer: A,B,D

Question 5

What is the difference between the i and a commands of the vi editor?

A. i (interrupt) temporarily suspends editing of a file to the background whereas a (abort) terminates editing. B. i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor. C. i (independent rows) starts every new line at the first character whereas a (aligned rows) keeps the indentation of the previous line. D. i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switches modes automatically.

Correct Answer: B

Question 6

What does the exit status 0 indicate about a process?

A. The process couldn't finish correctly. B. The process ended without any problems. C. The process finished in time. D. The process was terminated by the user. E. The process waited for an input but got none.

Correct Answer: B

Question 7

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. When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading. C. Redirection for shell commands do not work using the > character. It only works using the | character instead. D. The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.

Correct Answer: B

Question 8

CORRECT TEXT
Which option to the yum command will update the entiresystem? (Specify ONLY the option name without any additional parameters.)

Correct Answer:

update, upgrade

Question 9

Which of the following commands can be used to create a USB storage media from a disk image?

A. fdisk B. cc C. mount D. gdisk E. dd

Correct Answer: E

Question 10

Which of the following commands moves and resumes in the background the last stopped shell job?

A. fg B. back C. run D. bg

Correct Answer: D

Question 11

Which RPM command will output the name of the package which supplied the file /etc/exports?

A. rpm -qp /etc/exports B. rpm -qi /etc/exports C. rpm -F /etc/exports D. rpm -qf /etc/exports E. rpm -Kl /etc/exports

Correct Answer: D

Question 12

Which of the following are tasks handled by a display manager like XDM or KDM? (Choose TWO correct answers.)

A. Start and prepare the desktop environment for the user. B. Create an X11 configuration file for the current graphic devices and monitors. C. Lock the screen when the user was inactive for a configurable amount of time. D. Handle the login of a user. E. Configure additional devices like new monitors or projectors when they are attached.

Correct Answer: A,D

Question 13

Which of the following shell redirections will write standard output and standard error output to a file named filename?

A. >>filename B. 1>&2>filename C. 2>&1 >filename D. >filename 2>&1 E. 1&2>filename

Correct Answer: D

Question 14

Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?

A. sed 's/bob, Bob/' letter > newletter B. sed s/bob/Bob/ letter < newletter C. sed 's/bob/Bob/g' letter > newletter D. sed 's/bob/Bob' letter > newletter E. sed '/bob/Bob' letter >newletter

Correct Answer: C

Linux Foundation Certified System Administrator - LFCS Exam Practice Test