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?
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❌ Provides a wide range of software packages
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✅ Serves as the foundation of the OS and manages hardware resources
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❌ Manages the desktop environment
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❌ 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?
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❌ Allows users to multitask with windows and tabs
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❌ Makes navigation easier
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✅ Allows users to perform complex tasks
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❌ Provides an intuitive UI
Explanation:
CLI is powerful, precise, and ideal for complex or automated tasks.
3. Question 3
Best description of GUI?
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❌ Suitable for low-spec machines
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❌ Offers precise control
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❌ Provides access to powerful tools
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✅ 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?
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❌ System Performance App
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✅ System Monitor App
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❌ System Maintenance App
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❌ System Setting App
Explanation:
System Monitor displays CPU, RAM, disk, and process activity.
5. Question 5
Grant execute permissions to everyone for organize.sh?
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❌
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?
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❌ Best games
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✅ Stability, security, efficiency
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❌ No installation needed
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❌ 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?
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✅
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 /.
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❌ A specific root
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✅ A single root
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❌ A double root
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❌ An uneven root
Explanation:
Linux follows a single-root filesystem, starting at /.
9. Question 9
Where to check application logs?
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❌ /home
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❌ /bin
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❌ /sbin
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✅ /var/log
Explanation:
Log files (system + applications) are stored in /var/log.
10. Question 10
Run level with networking but no GUI?
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❌ 5
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❌ 4
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❌ 2
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✅ 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 |