What is the primary function of a firewall?

What is the primary function of a firewall?

• A. To improve network speed
• B. To prevent unauthorized access to or from a network
• C. To scan for malware
• D. To store data securely

Answer: (B)

A firewall's primary function is to prevent unauthorized access to or from a network. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet. By controlling incoming and outgoing network traffic, a firewall helps protect sensitive data and resources from potential threats and attacks. It uses predefined security rules to determine which traffic should be allowed or blocked, effectively regulating access and maintaining the integrity of the network. Improving network speed, scanning for malware, and storing data securely do not align with the primary purpose of a firewall. While firewalls can contribute to overall network security, they are specifically designed for access control rather than performance enhancement or data storage solutions.

A firewall's primary function is to prevent unauthorized access to or from a network. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet. By controlling incoming and outgoing network traffic, a firewall helps protect sensitive data and resources from potential threats and attacks. It uses predefined security rules to determine which traffic should be allowed or blocked, effectively regulating access and maintaining the integrity of the network.

Improving network speed, scanning for malware, and storing data securely do not align with the primary purpose of a firewall. While firewalls can contribute to overall network security, they are specifically designed for access control rather than performance enhancement or data storage solutions.