100% Free Linux Foundation LFCS Practice Test Questions and Answers 2026

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Total 260 Questions | Updated On: May 21, 2026

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Question 1

Each entry in a crontab must end with what character?

A : Tab

B : Space

C : Backslash

D : Newline

Answer: D

Question 2

Which of the following kernel parameters instructs the kernel to suppress most boot messages?

A : silent

B : verbose=0

C : nomesg

D : quiet

Answer: D

Question 3

Which of the following commands reboots the system when using SysV init? (Choose TWOcorrect answers.)

A : shutdown -r now

B : shutdown -r "rebooting"

C : telinit 6

D : telinit 0

E : shutdown -k now "rebooting"

Answer: A,C

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

Which of the following are valid stream redirection operators within Bash? (Choose THREEcorrect answers.)

A :

B :

C : >

D : >>>

E : %>

Answer: A,B,C

Page: 1 / 52

Total 260 Questions | Updated On: May 21, 2026

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