How will a boundary firewall help prevent a cyber attack?

How will a boundary firewall help prevent a cyber attack?

• A. It provides a basic level of security
• B. It blocks attackers from accessing the system in the first place
• C. It monitors all network traffic and blocks unwanted traffic
• D. It updates antivirus definitions automatically

Answer: (B)

A boundary firewall acts as a gatekeeper at the edge of a network, enforcing who can reach internal systems by applying rules about what traffic is allowed. This is why the best way to describe its protective effect is that it blocks attackers from accessing the system in the first place. By permitting only legitimate connections (for example, to required services like a website or mail) and dropping everything else, it reduces the attack surface and prevents many intrusion attempts before they can do harm. Some firewalls also track the state of connections to ensure ongoing traffic is part of a legitimate exchange, which strengthens this protection. While firewall logs and monitoring can help identify threats, automatically updating antivirus definitions is not a function of a boundary firewall.

A boundary firewall acts as a gatekeeper at the edge of a network, enforcing who can reach internal systems by applying rules about what traffic is allowed. This is why the best way to describe its protective effect is that it blocks attackers from accessing the system in the first place. By permitting only legitimate connections (for example, to required services like a website or mail) and dropping everything else, it reduces the attack surface and prevents many intrusion attempts before they can do harm. Some firewalls also track the state of connections to ensure ongoing traffic is part of a legitimate exchange, which strengthens this protection. While firewall logs and monitoring can help identify threats, automatically updating antivirus definitions is not a function of a boundary firewall.