1. Question 1

When interacting with hardware, the OS communicates instructions through a device ______.

✅ Driver
❌ Preferences
❌ Registry

Explanation:
Device drivers act as the translator between the OS and hardware.

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2. Question 2

To prevent unwanted elements from entering your computer system, you should use:

❌ Anti-virus
✅ Firewall
❌ Denial of Service

Explanation:
A firewall blocks unauthorized network traffic.

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3. Question 3

Malicious software hiding inside other software is called a:

❌ Ransomware
❌ Botnet
✅ Trojan

Explanation:
A Trojan disguises itself as legitimate software to trick users.

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4. Question 4

Which approaches reduce password risk? (Select all that apply)

✅ Use a different password for each account.
❌ Use long sequences of numbers.
✅ Avoid using predictable patterns.

Explanation:
Unique and unpredictable passwords increase security; long numeric strings are weak.

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5. Question 5

________ refers to applications like MS Word or Excel.

❌ Malware
✅ Application software
❌ System software

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6. Question 6

Examples of non-volatile memory: (Select all that apply)

❌ RAM
✅ USB drives
✅ Hard disk drives (HDD)

Explanation:
Non-volatile memory retains data even when power is off.

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7. Question 7

Which CPU part receives signals?

✅ Control unit
❌ Registers
❌ Arithmetic unit

Explanation:
The control unit directs operations and handles signals.

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8. Question 8

Where do you type commands?

❌ GUI
❌ API
✅ CLI

Explanation:
A Command Line Interface allows typed commands.

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9. Question 9

Which OS rotates among tasks, giving each a fair time slice?

❌ Batch OS
✅ Time-sharing OS
❌ Distributed OS

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10. Question 10

Advantages of proprietary software: (Select all that apply)

✅ Extensive documentation
❌ Less expensive
✅ Quick bug fixes

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🧾 Summary Table

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