What is the primary purpose of using a firewall on a Personal Computer?

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RRB JE CE 22 Apr 2025 Shift 2 CBT 2 Official Paper
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  1. To speed up internet connectivity
  2. To increase storage space
  3. To clean up temporary files
  4. To block unauthorised access and protect the computer

Answer (Detailed Solution Below)

Option 4 : To block unauthorised access and protect the computer
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Detailed Solution

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The correct answer is option 4: To block unauthorised access and protect the computer

Key Points

A firewall is a network security system (either hardware or software-based) designed to monitor and control incoming and outgoing network traffic. Its main purpose is to create a barrier between your internal network and untrusted external networks (like the internet) to prevent unauthorized access.

Explanation of options:

  • Option 1 – To speed up internet connectivity: ❌ Incorrect. Firewalls don’t affect internet speed; they monitor traffic for security.
  • Option 2 – To increase storage space: ❌ Incorrect. Firewalls have no role in storage management.
  • Option 3 – To clean up temporary files: ❌ Incorrect. That’s the job of disk cleanup or system maintenance tools.
  • Option 4 – To block unauthorised access and protect the computer: ✅ Correct. This is the main function of a firewall — protecting systems from hackers, viruses, and unauthorized access.

Hence, the correct answer is: option 4: To block unauthorised access and protect the computer

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