Linux File System MCQ Quiz

1. What is the root directory in Linux?

A. /home B. / C. /root D. /etc

Correct answer: B. / is the starting point of the entire Linux file system.

2. Which directory stores normal users' home directories?

A. /root B. /etc C. /home D. /bin

Correct answer: C. /home stores normal users' personal directories.

3. Which directory is the home directory of the root user?

A. /home/root B. /root C. /admin D. /etc/root

Correct answer: B. /root is the root user's home directory.

4. Which directory stores system and service configuration files?

A. /etc B. /var C. /tmp D. /mnt

Correct answer: A. /etc contains configuration files.

5. Which directory contains essential user commands?

A. /dev B. /bin C. /proc D. /boot

Correct answer: B. /bin contains essential user commands like ls, cp, and mv.

6. Which directory mostly contains system administration commands?

A. /sbin B. /media C. /home D. /srv

Correct answer: A. /sbin contains admin commands commonly used by root.

7. Which directory stores log files?

A. /var/log B. /usr/log C. /etc/log D. /tmp/log

Correct answer: A. /var/log stores system, service, and application logs.

8. Which directory contains device files?

A. /proc B. /dev C. /usr D. /opt

Correct answer: B. /dev contains device files for disks, terminals, and hardware.

9. Which directory stores temporary files?

A. /tmp B. /boot C. /root D. /lib

Correct answer: A. /tmp is used for temporary files.

10. Which directory contains boot-related files?

A. /etc B. /boot C. /var D. /mnt

Correct answer: B. /boot stores kernel and bootloader files.

11. Which directory is commonly used for manual temporary mounting?

A. /mnt B. /bin C. /etc D. /sys

Correct answer: A. Admins commonly use /mnt for manual mounts.

12. Which directory is commonly used for removable media like USB drives?

A. /srv B. /media C. /usr D. /proc

Correct answer: B. /media is commonly used for removable devices.

13. Which command shows the current directory?

A. ls B. pwd C. cd D. df

Correct answer: B. pwd means print working directory.

14. Which command lists files and directories?

A. ls B. mkdir C. touch D. mount

Correct answer: A. ls lists files and directories.

15. Which command creates an empty file?

A. mkdir B. touch C. rm D. stat

Correct answer: B. touch creates an empty file or updates file timestamps.

16. Which command creates a directory?

A. mkdir B. cat C. df D. chmod

Correct answer: A. mkdir creates directories.

17. Which command changes file permissions?

A. chown B. chmod C. chgrp D. mount

Correct answer: B. chmod changes read, write, and execute permissions.

18. Which command changes file owner and group?

A. chmod B. df C. chown D. lsblk

Correct answer: C. chown changes ownership.

19. Which command shows disk usage of mounted file systems?

A. du B. df C. stat D. file

Correct answer: B. df shows disk usage of mounted file systems.

20. Which command shows disk usage of files and directories?

A. du B. df C. lsblk D. blkid

Correct answer: A. du shows size usage of files and directories.

21. Which command shows disks and partitions?

A. lsblk B. pwd C. touch D. chmod

Correct answer: A. lsblk lists block devices like disks and partitions.

22. Which file controls automatic mounting at boot?

A. /etc/passwd B. /etc/fstab C. /etc/hosts D. /etc/group

Correct answer: B. /etc/fstab controls file systems that mount automatically at boot.

23. Which symbol in ls -l output means directory?

A. - B. l C. d D. s

Correct answer: C. d at the start of ls -l output means directory.

24. What does an inode store?

A. Only file name B. File metadata like owner, permissions, size, and timestamps C. Only password information D. Only command history

Correct answer: B. An inode stores metadata, not the file name.

25. Which option best describes the Linux file system?

A. It uses C:, D:, and E: drives only B. It starts from / and organizes everything under one tree C. It stores files only in /home D. It does not use directories

Correct answer: B. Linux uses one directory tree starting from /.