iSACA Cybersecurity Fundamentals Certification Practice Exam

What characterizes a dual-homed firewall?

1. It connects multiple LANs

2. It has multiple network cards

3. It is the simplest firewall configuration

4. It manages a single point of access

The correct answer is: It has multiple network cards

A dual-homed firewall is characterized by having multiple network cards. This setup typically involves two network interfaces that connect to two distinct networks, often one to an internal trusted network and another to an external untrusted network, such as the internet. This configuration enhances security by creating a barrier between the two networks, allowing the firewall to control traffic between them effectively. The presence of multiple network cards is crucial because it facilitates the separation of network traffic. Each interface can be configured with different security policies, allowing for tailored rules that apply specifically to the internal or external network traffic. This distinction plays a vital role in preventing unauthorized access and monitoring data flow between networks. The other options, while related to firewall configurations, do not accurately describe the defining feature of a dual-homed firewall. Connecting multiple LANs is more characteristic of a multi-homed firewall, and stating that it is the simplest configuration does not hold since dual-homed setups tend to be more complex due to their separation of interfaces and associated rules. Additionally, a dual-homed firewall does not only manage a single point of access; it effectively manages traffic between two different network segments through its multiple interfaces.