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Module 3 Graded Quiz: Linux Operating Systems :Overview, Administration, and Security (IBM Cybersecurity Analyst Professional Certificate) Answers 2025

1. Question 1

Core purpose of the Linux kernel?

  • ❌ Provides a wide range of software packages

  • Serves as the foundation of the OS and manages hardware resources

  • ❌ Manages the desktop environment

  • ❌ Aims to offer an intuitive user interface

Explanation:
The kernel is the core of Linux — it manages hardware, memory, processes, and system resources.


2. Question 2

Best description of CLI?

  • ❌ Allows users to multitask with windows and tabs

  • ❌ Makes navigation easier

  • Allows users to perform complex tasks

  • ❌ Provides an intuitive UI

Explanation:
CLI is powerful, precise, and ideal for complex or automated tasks.


3. Question 3

Best description of GUI?

  • ❌ Suitable for low-spec machines

  • ❌ Offers precise control

  • ❌ Provides access to powerful tools

  • Provides users with an intuitive and user-friendly experience

Explanation:
GUI is designed for ease of use with icons, menus, and visuals.


4. Question 4

Where to find system performance info in Linux?

  • ❌ System Performance App

  • System Monitor App

  • ❌ System Maintenance App

  • ❌ System Setting App

Explanation:
System Monitor displays CPU, RAM, disk, and process activity.


5. Question 5

Grant execute permissions to everyone for organize.sh?

  • chmod 666 organize.sh

  • chmod o+x organize.sh

  • chmod +x organize.sh

  • chmod 755 organize.sh

Explanation:
chmod +x adds execute permission for owner, group, and others.


6. Question 6

Why do organizations prefer Linux?

  • ❌ Best games

  • Stability, security, efficiency

  • ❌ No installation needed

  • ❌ Only OS with a GUI

Explanation:
Linux is secure, fast, reliable, and cost-effective for enterprise use.


7. Question 7

Copy report.txt to Backup?

  • cp report.txt Backup

  • rm report.txt Backup

  • mv report.txt Backup

  • grep report.txt Backup

Explanation:
cp is used for copying files.


8. Question 8

Linux uses __________ directory denoted by /.

  • ❌ A specific root

  • A single root

  • ❌ A double root

  • ❌ An uneven root

Explanation:
Linux follows a single-root filesystem, starting at /.


9. Question 9

Where to check application logs?

  • ❌ /home

  • ❌ /bin

  • ❌ /sbin

  • /var/log

Explanation:
Log files (system + applications) are stored in /var/log.


10. Question 10

Run level with networking but no GUI?

  • ❌ 5

  • ❌ 4

  • ❌ 2

  • 3

Explanation:
Runlevel 3 = multi-user mode + networking, no graphical interface.


🧾 Summary Table

Q No. Correct Answer Key Concept
1 Kernel manages hardware & system resources Linux kernel
2 CLI performs complex tasks Command-line interface
3 GUI is intuitive/user-friendly Graphical interface
4 System Monitor App Performance monitoring
5 chmod +x organize.sh File permissions
6 Stability, security, efficiency Why Linux is used
7 cp report.txt Backup Copying files
8 Single root ( / ) Linux filesystem
9 /var/log Logs directory
10 Runlevel 3 Boot without GUI but with network