Free Linux Foundation LFCS Exam Questions

Become Linux Foundation Certified with updated LFCS exam questions and correct answers

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Total 260 Questions | Updated On: Feb 18, 2026

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Question 1

How is a display manager started?

A : It is started by a user using the command startx.

B : It is started like any other system service by the init system.

C : It is started by inetd when a remote hosts connects to the X11 port.

D : It is started automatically when a X11 user logs in to the system console.

Answer: B

Question 2

Each entry in a crontab must end with what character?

A : Tab

B : Space

C : Backslash

D : Newline

Answer: D

Question 3

Which of the following commands is used to change options and positional parameters fora runningBash?

A : history

B : set

C : bashconf

D : setsh

E : envsetup

Answer: B

Question 4

What is true regarding TCP port 23?

A : Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.

B : Port 23 is the well known port for the SSH service which provides secure logins.

C : Port 23 is the well known port for the rlogin service which is SSL secured by default.

D : Port 23 is the well known port for the system login services which are encrypted when the user runs the starttls command in his login shell.

Answer: A

Question 5

What is the correct command to extract the contents of the archive file download.bz2?