Module 3 Quiz - File System

Instructions

This quiz contains 30 multiple-choice questions to validate your understanding of Module 3.

Tip: Answer each question before revealing the answer. The answers are hidden just after each question.

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Question 1

What is the structure of the Linux file system?

1. Multiple independent roots

2. A single hierarchy with / as the root

3. A flat structure

4. A network structure

See explanation

Correct answer: A single hierarchy with / as the root

Explanation: Linux uses the Filesystem Hierarchy Standard (FHS) with a single root /. All files and directories are organized under this single root, unlike Windows which uses multiple roots (C:, D:, etc.).

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Question 2

Which command shows the current directory?

1. ls

2. pwd

3. cd

4. where

See explanation

Correct answer: pwd

Explanation: pwd (Print Working Directory) displays the full path of the current working directory. It is an essential command to know where you are in the hierarchy.

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Question 3

Which command lists files in a directory?

1. ls

2. list

3. dir

4. show

See explanation

Correct answer: ls

Explanation: ls (list) displays the contents of a directory. Common options: ls -l (details), ls -a (hidden files), ls -la (details + hidden), ls -h (human-readable sizes).

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Question 4

Which command changes the directory?

1. pwd

2. cd

3. chdir

4. move

See explanation

Correct answer: cd

Explanation: cd (change directory) allows navigation between directories. Examples: cd /home, cd .. (parent directory), cd ~ (home directory), cd - (previous directory).

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Question 5

Which command creates a directory?

1. create

2. mkdir

3. newdir

4. dir

See explanation

Correct answer: mkdir

Explanation: mkdir (make directory) creates a new directory. Option -p creates parent directories if necessary: mkdir -p dir1/dir2/dir3.

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Question 6

Which command creates an empty file?

1. create

2. touch

3. newfile

4. mkfile

See explanation

Correct answer: touch

Explanation: touch creates an empty file or updates the modification date of an existing file. Example: touch myfile.txt.

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Question 7

Which command copies a file?

1. move

2. cp

3. copy

4. duplicate

See explanation

Correct answer: cp

Explanation: cp (copy) copies files or directories. Syntax: cp source destination. Option -r for recursive directory copying: cp -r dir1 dir2.

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Question 8

Which command moves or renames a file?

1. move

2. mv

3. rename

4. shift

See explanation

Correct answer: mv

Explanation: mv (move) moves or renames files and directories. Examples: mv file1 file2 (rename), mv file /tmp/ (move).

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Question 9

Which command deletes a file?

1. delete

2. rm

3. remove

4. del

See explanation

Correct answer: rm

Explanation: rm (remove) deletes files. Options: rm -r (recursive for directories), rm -f (force), rm -i (interactive). Caution: deletion is permanent!

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Question 10

Which command displays the content of a file?

1. show

2. cat

3. view

4. display

See explanation

Correct answer: cat

Explanation: cat (concatenate) displays the content of a file. Other useful commands: less (navigation), head (first lines), tail (last lines), more (pagination).

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Question 11

What are the three basic permissions for Linux files?

1. Read (r), Write (w), Execute (x)

2. Create, Read, Delete

3. Public, Private, Protected

4. User, Group, Other

See explanation

Correct answer: Read (r), Write (w), Execute (x)

Explanation: The basic Linux permissions are: read, write, execute. These permissions apply to the owner, the group, and other users.

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Question 12

Which command modifies file permissions?

1. chperm

2. chmod

3. perm

4. setperm

See explanation

Correct answer: chmod

Explanation: chmod (change mode) modifies permissions. Syntaxes: chmod 755 file (octal), chmod u+x file (symbolic). Examples: chmod +x script.sh, chmod 644 file.txt.

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Question 13

Which command changes the owner of a file?

1. chuser

2. chown

3. owner

4. setowner

See explanation

Correct answer: chown

Explanation: chown (change owner) modifies the owner and/or group of a file. Examples: chown user:group file, chown user file, chown :group file. Usually requires root privileges.

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Question 14

Which directory contains system configuration files?

1. /bin

2. /etc

3. /var

4. /usr

See explanation

Correct answer: /etc

Explanation: /etc contains system and application configuration files. Examples: /etc/passwd, /etc/hosts, /etc/nginx/, /etc/ssh/.

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Question 15

Which directory contains users' home directories?

1. /root

2. /home

3. /users

4. /usr

See explanation

Correct answer: /home

Explanation: /home contains users' personal directories. Each user typically has their own directory under /home/username. The root's home directory is /root.

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Question 16

Which command searches for files by name?

1. search

2. find

3. locate

4. grep

See explanation

Correct answer: find

Explanation: find searches for files in the hierarchy. Examples: find /home -name "*.txt", find . -type f -name "script*", find /var/log -mtime -7 (modified in the last 7 days).

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Question 17

What is the difference between a symbolic link and a hard link?

1. No difference

2. A hard link points directly to the inode, a symbolic link points to a path

3. A symbolic link is faster

4. A hard link cannot point to a directory

See explanation

Correct answer: A hard link points directly to the inode, a symbolic link points to a path

Explanation: A hard link (ln file link) shares the same inode as the original file. A symbolic link (ln -s file link) is a separate file containing a path to the target file. Symbolic links can point to directories and files on other file systems.

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Question 18

Which command creates a symbolic link?

1. link

2. ln -s

3. symlink

4. create-link

See explanation

Correct answer: ln -s

Explanation: ln -s creates a symbolic link. Syntax: ln -s target link. Example: ln -s /usr/bin/python3 /usr/local/bin/python. Symbolic links are identified by l in ls -l.

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Question 19

What is an inode in Linux?

1. A file type

2. A data structure that stores a file's metadata

3. A directory

4. A process

See explanation

Correct answer: A data structure that stores a file's metadata

Explanation: An inode (index node) stores a file's metadata: permissions, owner, size, dates, pointers to data blocks. The file name is stored separately in the directory. Each file has a unique inode number.

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Question 20

Which directory contains essential system binaries?

1. /usr/bin

2. /bin

3. /sbin

4. /opt

See explanation

Correct answer: /bin

Explanation: /bin contains essential binaries needed for system startup and repair. Examples: ls, cp, mv, rm, bash, cat. These commands are accessible to all users.

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Question 21

Which command searches for text in files?

1. find

2. grep

3. search

4. locate

See explanation

Correct answer: grep

Explanation: grep searches for patterns in files. Examples: grep "pattern" file, grep -r "pattern" /directory (recursive), grep -i "pattern" file (case-insensitive), grep -n "pattern" file (with line numbers).

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Question 22

What is the default file system on Ubuntu 24.04?

1. ext3

2. ext4

3. xfs

4. btrfs

See explanation

Correct answer: ext4

Explanation: ext4 (Fourth Extended File System) is the default file system on Ubuntu. It is journaled, stable, and supports files up to 16TB and file systems up to 1EB.

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Question 23

Which command displays the first lines of a file?

1. tail

2. head

3. first

4. top

See explanation

Correct answer: head

Explanation: head displays the first lines of a file. Default is 10 lines. Options: head -n 20 file (20 lines), head -c 100 file (100 characters).

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Question 24

Which command displays the last lines of a file?

1. tail

2. head

3. last

4. bottom

See explanation

Correct answer: tail

Explanation: tail displays the last lines of a file. Default is 10 lines. Options: tail -n 20 file (20 lines), tail -f file (real-time follow, very useful for logs).

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Question 25

What is the FHS (Filesystem Hierarchy Standard)?

1. A file system

2. A standard that defines the directory structure in Linux

3. A file manager

4. A partitioning tool

See explanation

Correct answer: A standard that defines the directory structure in Linux

Explanation: The FHS defines where to place files in the Linux system. For example: /bin for essential binaries, /etc for configuration, /home for users, /var for variable data. This ensures consistency across Linux distributions.

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Question 26

What is the difference between an absolute path and a relative path?

1. No difference

2. An absolute path starts with /, a relative path is relative to the current directory

3. A relative path is faster

4. An absolute path cannot be used

See explanation

Correct answer: An absolute path starts with /, a relative path is relative to the current directory

Explanation: An absolute path always starts with / and specifies the full location from the root (e.g., /home/user/documents). A relative path is relative to the current working directory (e.g., documents or ../parent).

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Question 27

Which command shows disk space usage?

1. du

2. df

3. disk

4. space

See explanation

Correct answer: df

Explanation: df (disk free) displays available disk space on mounted file systems. Options: df -h (human-readable sizes), df -T (file system types). du shows usage of a specific directory.

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Question 28

Which command shows the size of a directory?

1. du

2. df

3. size

4. dirsize

See explanation

Correct answer: du

Explanation: du (disk usage) displays the space used by a directory. Options: du -h (human-readable sizes), du -s (summary), du -sh /path (total size of a directory).

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Question 29

What is the difference between a file and a directory in Linux?

1. No difference

2. A directory is a special type of file that contains references to other files

3. Directories are not files

4. Only files have inodes

See explanation

Correct answer: A directory is a special type of file that contains references to other files

Explanation: In Linux, "everything is a file". A directory is a special file that contains a list of file names and their inodes. That's why you can use ls -d to view directories as files.

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Question 30

Which command changes the group of a file?

1. chgroup

2. chgrp

3. group

4. setgroup

See explanation

Correct answer: chgrp

Explanation: chgrp (change group) modifies the group of a file. Examples: chgrp group file, chgrp -R group /directory (recursive). You can also use chown :group file.

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Quiz Result

Congratulations on completing the Module 3 quiz!

Score:

• 25-30 correct answers: Excellent! You master the Linux file system.
• 20-24 correct answers: Very good! Review the concepts where you had difficulties.
• 15-19 correct answers: Good! Review the chapters on the file system.
• Less than 15: Recommended to review the module before continuing.

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Next Steps

Now that you have validated your knowledge:

Module 4: Process Management
Practical Labs: Practice the file system with Module 3 labs

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Quiz created on: December 2024 - Tested on Ubuntu 24.04