What is the primary function of a firewall tool in a computer network?

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  1. To speed up internet connections
  2. To monitor and control incoming and outgoing network traffic
  3. To store data securely
  4. To detect and remove viruses

Answer (Detailed Solution Below)

Option 2 : To monitor and control incoming and outgoing network traffic
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The correct answer is Option 2) To monitor and control incoming and outgoing network traffic.

Key Points

  • A firewall is a network security system that monitors and filters incoming and outgoing network traffic based on predetermined security rules.
  • Its main function is to act as a barrier between a trusted internal network and untrusted external networks (such as the internet).
  • Firewalls help prevent unauthorized access, data breaches, and cyberattacks.

Additional Information

  • Option 1 – Speeding up internet: Not a firewall function; this is managed by network optimization tools.
  • Option 3 – Storing data securely: Done by storage and encryption tools, not firewalls.
  • Option 4 – Detecting and removing viruses: This is the role of antivirus software, not firewalls.
  • Firewalls can be hardware-based, software-based, or both, and are essential for maintaining network security.
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