D281 Linux Foundations - Set 5 - Part 2

Test your knowledge of technical writing concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 21: Which of the following commands is used to reboot the Linux system?

reboot

shutdown -r now

systemctl reboot

All of the above

Question 22: Which command would you use to delete a directory that contains files?

rm -r

rmdir

deldir

remove

Question 23: How do you create a new directory in Linux?

mkdir

newdir

touchdir

create

Question 24: Which command lists all active processes running on a Linux system?

top

htop

All of the above

Question 25: What does the locate command do?

Finds files by searching a pre-built database

Lists files in a directory

Searches for patterns within files

Creates a new directory

Question 26: Which command is used to monitor system performance in real-time?

top

free

iostat

Question 27: Which command is used to set permissions on files or directories in Linux?

chmod

chown

chgrp

setperm

Question 28: How can you display the current users logged in to the system?

who

users

All of the above

Question 29: Which command is used to extract files from a tar archive?

tar -xvf

unzip

gunzip

unrar

Question 30: Which command is used to print the path of the current directory?

pwd

dir

echo $DIR

Question 31: Which command displays the available disk space on mounted filesystems?

lsblk

mount

Question 32: Which file in Linux stores group information?

/etc/group

/etc/shadow

/etc/passwd

/etc/hosts

Question 33: How do you check system uptime in Linux?

uptime

who -u

top

systemctl uptime

Question 34: Which command is used to copy files and directories?

copy

copydir

Question 35: What does the head command do in Linux?

Displays the first 10 lines of a file

Displays the last 10 lines of a file

Displays file permissions

Copies files to another directory

Question 36: Which command is used to shut down a Linux system?

shutdown

halt

poweroff

All of the above

Question 37: How do you extract a .tar.gz file in Linux?

tar -xvzf

gunzip

unzip

gzip -d

Question 38: What does the chmod 755 filename command do?

Assigns read, write, and execute permissions for the owner and read and execute permissions for others

Assigns full permissions to the owner and no permissions to others

Assigns no permissions to the owner and full permissions to others

Assigns read-only permissions for everyone

Question 39: Which command displays information about the current Linux distribution?

lsb_release -a

uname -a

cat /etc/os-release

Both a and c

Question 40: How do you check memory usage in Linux?

free -h

df -h

top

All of the above

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