Information Systems and Controls (ISC) CPA Practice Exam

The main objective of network segmentation or isolation is to control network traffic and separate it from outside communications. By dividing a network into smaller, isolated segments, organizations can enhance security by ensuring that sensitive information and critical systems reside in a separate environment. This separation minimizes the risk of unauthorized access or attacks from external sources since communication between segments can be tightly controlled via firewalls, access control lists (ACLs), or other security measures.

Network segmentation also allows for more effective traffic management, as the different segments can operate independently. This helps reduce congestion and optimizes throughput by limiting the amount of broadcast traffic on any one segment. Furthermore, it enhances security protocols, as any potential breaches can be contained within one segment without affecting the entire network.

While other choices present valid benefits of network segmentation, such as enhancing security or improving performance, the primary goal is centered on controlling traffic and ensuring that segments are isolated from each other and from outside threats.