[Q20-Q38] Master 2026 Latest The Questions Linux Foundation Certified and Pass LFCS Real Exam!

QUESTION 20
Which of the following tasks can be accomplished using the command date? (Choose TWO correct answers.)

Synchronize the hardware and system clocks.

Output date and time in different formats.

Set the system clock.

Set the hardware clock.

Update the time via NTP.

QUESTION 21
Which of the following are tasks handled by a display manager like XDM or KDM? (Choose TWO correct answers.)

Start and prepare the desktop environment for the user.

Configure additional devices like new monitors or projectors when they are attached.

Handle the login of a user.

Lock the screen when the user was inactive for a configurable amount of time.

Create an X11 configuration file for the current graphic devices and monitors.

QUESTION 22
CORRECT TEXT
Which port is the default server port for the HTTPS protocol? (Specify the port number using digits.)

QUESTION 23
Which of the following options is used in a GRUB Legacy configuration file to define the amount of time that the GRUB menu will be shown to the user?

hidemenu

splash

timeout

showmenu

QUESTION 24
Whichof the following commands displays the contents of a gzip compressed tar archive?

gzip archive.tgz | tar xvf –

tar ztf archive.tgz

gzip -d archive.tgz | tar tvf –

tar cf archive.tgz

QUESTION 25
Which of the following settings for umask ensures that new files have the default permissions -rw-r—– ?

0017

0640

0038

0027

QUESTION 26
Which of the following commands can be used to display the local routing table? (Choose TWO correct answers.)

ifconfig

dig

netstat

route

trackroute

QUESTION 27
Immediately after deleting 3 lines of text in vi and moving the cursor to a different line, which single character command will insert the deleted content below the current line?

i (lowercase)

P (uppercase)

p (lowercase)

U (uppercase)

u (lowercase)

QUESTION 28
What is the effect of the egrep command when the -v option is used?

It enables color to highlight matching parts.

It only outputs non-matching lines.

It shows the command’s version information.

It changes theoutput order showing the last matching line first.

QUESTION 29
What is the output of the following command sequence?
for token in a b c; do
echo -n “$token “;
done

anbncn

a b c

“a ” “b ” “c “

token token token

abc

QUESTION 30
Which command can be used to delete a group from a Linux system?

groupdel

groupmod

groups

groupedit

QUESTION 31
During a system boot cycle, what program is executed after the BIOS completes its tasks?

The bootloader

The inetd program

The init program

The kernel

QUESTION 32
Which of the following commands will help identify a broken router between the local and the remote machine?

ps

netstat

nslookup

ifconfig

traceroute

QUESTION 33
What is true about the ntpdate command?

It is the primary management command for the NTP time server.

It updates the local system’s date (i.e. day, month and year) but not the time (i.e. hours, minutes, seconds).

It queries one or more NTP time servers and adjusts the system time accordingly.

It sends the local system time to one or many remote NTP time servers for redistribution.

It can be used by any user to set the user clock independently of the system clock.

QUESTION 34
Which of the following commands replaces each occurrence of ‘bob’ in the file letter with ‘Bob’ and writes the result to the file newletter?

sed ‘/bob/Bob’ letter > newletter

sed s/bob/Bob/ letter < newletter

sed ‘s/bob/Bob’ letter > newletter

sed ‘s/bob/Bob/g’ letter > newletter

sed ‘s/bob, Bob/’ letter > newletter

QUESTION 35
Which variable defines the directories in which a Bash shell searches for executable commands?

BASHEXEC

BASHRC

PATH

EXECPATH

PATHRC

QUESTION 36
Which approach will provide a listing of the contents in a tar archive?