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

Question

Question

This question was previously asked in

RRB JE CBT-2 2024 (Civil Engineering) Official Paper (Held On: 22 Apr, 2025 Shift 2)

Answer 1

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The correct answer is Option 4) To block unauthorised access and protect the computer.

Key Points

A firewall is a security system that monitors and controls incoming and outgoing network traffic.
It acts as a barrier between a trusted internal network and untrusted external networks (like the internet).
The main purpose is to block unauthorized access while permitting legitimate communication.
Firewalls can be hardware-based, software-based, or a combination of both.

Additional Information

Option 1 – Clean temporary files: Done using disk cleanup tools, not firewalls.
Option 2 – Increase storage space: Achieved by deleting files or adding storage, unrelated to firewalls.
Option 3 – Speed up internet: Network optimization tools are used for this, not firewalls.
Firewalls are essential for cybersecurity, especially in protecting personal and sensitive data from hackers and malware.