Linux MCQs with answers Page - 167

Dear candidates you will find MCQ questions of Linux here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Share your questions by clicking Add Question

Q. Which command can be used to monitor real-time system resource usage?

  • (A) top
  • (B) free
  • (C) vmstat
  • (D) uptime
💬 Discuss
✅ Correct Answer: (A) top
Explanation: 'top' displays dynamic real-time process and resource info.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. Which command lists all mounted file systems?

  • (A) mount
  • (B) df
  • (C) lsblk
  • (D) blkid
💬 Discuss
✅ Correct Answer: (A) mount
Explanation: 'mount' without arguments lists mounted filesystems.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. How can you display the first 10 lines of a file?

  • (A) head filename
  • (B) tail filename
  • (C) cat filename
  • (D) less filename
💬 Discuss
✅ Correct Answer: (A) head filename
Explanation: 'head' displays the first 10 lines by default.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. What does the 'ln -s' command do?

  • (A) Creates a symbolic link
  • (B) Lists files
  • (C) Changes file permissions
  • (D) Removes a file
💬 Discuss
✅ Correct Answer: (A) Creates a symbolic link
Explanation: 'ln -s' creates a symbolic (soft) link to a file or directory.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. Which command is used to display the system hostname?

  • (A) hostname
  • (B) uname
  • (C) host
  • (D) netstat
💬 Discuss
✅ Correct Answer: (A) hostname
Explanation: 'hostname' prints or sets the system hostname.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. Which command is used to display all open network connections?

  • (A) netstat -tuln
  • (B) ifconfig
  • (C) ping
  • (D) traceroute
💬 Discuss
✅ Correct Answer: (A) netstat -tuln
Explanation: 'netstat -tuln' lists TCP/UDP listening ports.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. What does the 'chmod 644 file' command do?

  • (A) Sets read/write for owner, read for group and others
  • (B) Sets full permissions for all
  • (C) Removes all permissions
  • (D) Makes the file executable
💬 Discuss
✅ Correct Answer: (A) Sets read/write for owner, read for group and others
Explanation: '644' means rw- for owner, r-- for group and others.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. Which command is used to check disk space usage?

  • (A) df -h
  • (B) du -h
  • (C) lsblk
  • (D) mount
💬 Discuss
✅ Correct Answer: (A) df -h
Explanation: 'df -h' shows disk space usage in human-readable format.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. How do you list all running services on a system using systemd?

  • (A) systemctl list-units --type=service
  • (B) service --status-all
  • (C) chkconfig --list
  • (D) initctl list
💬 Discuss
✅ Correct Answer: (A) systemctl list-units --type=service
Explanation: 'systemctl' is used with systemd to manage services.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Q. Which command is used to download files from the internet via command line?

  • (A) wget
  • (B) curl
  • (C) Both wget and curl
  • (D) fetch
💬 Discuss
✅ Correct Answer: (C) Both wget and curl
Explanation: 'wget' and 'curl' can download files via terminal.

Published by Mr. Dubey ⭐ 111.42K Points at 08-Jun-2025 08:03 am in Linux

Programming Categories

📱 Download Our App

Learn MCQs on the go with our easy-to-use Android app

Get it on Google Play