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

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.