Future Business Leaders of America (FBLA) Cybersecurity Practice Test

What is the purpose of a firewall in a computer system?

1. To enhance computer speed

2. To block unauthorized access while allowing outward communication

3. To store data securely

4. To manage software updates

The correct answer is: To block unauthorized access while allowing outward communication

A firewall serves a critical role in network security by acting as a barrier between a trusted internal network and untrusted external networks, such as the internet. Its primary purpose is to block unauthorized access to or from a private network while allowing legitimate outbound communication. This capability is crucial in protecting systems from attacks and data breaches. By monitoring and controlling incoming and outgoing network traffic based on predetermined security rules, a firewall helps safeguard sensitive information and prevent unauthorized users from gaining access to the internal network. This ensures that while users can access the internet and communicate outwardly for activities like browsing and sending emails, any attempts by unauthorized individuals or malicious programs to penetrate the network are effectively blocked. The other options do not accurately reflect the primary function of a firewall. For instance, firewalls do not enhance computer speed, store data securely, or manage software updates. Instead, these functions relate to other types of computer systems and principles of cybersecurity. Therefore, the main reason for the correctness of this option is its alignment with the essential concept of network protection.