SkillTestPro | CompTIA Linux+ Practice Test 4

CompTIA Linux+ Practice Test 4

CompTIA Linux+ Practice Test

1 / 10

What does the userdel -r jdoe command do?

Locks the jdoe account

Changes jdoe’s password

Deletes the jdoe user and their home directory

Removes jdoe from all groups

Renames the jdoe account

2 / 10

Which command displays the IP address of the eth0 interface?

ifconfig eth0

ip addr show eth0

netstat -i eth0

route -n eth0

ping eth0

3 / 10

What is the purpose of the export command in a shell?

Deletes a variable

Displays all environment variables

Imports a script into the shell

Sets a temporary alias

Makes a variable available to subprocesses

4 / 10

Which command creates a symbolic link named "link.txt" to "original.txt"?

ln original.txt link.txt

cp -s original.txt link.txt

mv original.txt link.txt

ln -s original.txt link.txt

link original.txt link.txt

5 / 10

What does the journalctl -u sshd command show?

All system logs

Logs specific to the SSH service

Current SSH configuration

Active SSH connections

SSH user permissions

6 / 10

Which command sets a file named "notes.txt" to be readable and writable only by its owner?

chmod 644 notes.txt

chmod 755 notes.txt

chmod 400 notes.txt

chmod 777 notes.txt

chmod 600 notes.txt

7 / 10

What does the lsblk command display?

Directory contents

Running processes

Block device information

Network interfaces

System logs

8 / 10

Which command updates the package database on an Ubuntu system?

apt update

apt-get install

dpkg -u

apt upgrade

update-pkg

9 / 10

What is the purpose of the /etc/shadow file?

Stores user home directories

Lists group memberships

Defines system-wide environment variables

Contains encrypted user passwords

Configures sudo privileges

10 / 10

Which command displays the amount of free and used memory in megabytes?

top

vmstat -m

free -m

ps aux

meminfo

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