What is network segmentation?

• A. Dividing a computer network into sub-networks to enhance security and performance
• B. Connecting multiple networks to ease communication
• C. Reducing the size of a single network
• D. Creating a backup for data in the network

Answer: (A)

Network segmentation involves dividing a larger network into smaller, distinct sub-networks or segments. This practice is primarily used to enhance security and performance within an organization. By isolating different parts of the network, network segmentation can prevent unauthorized access to sensitive data and limit the spread of malware. Each segment can have its own security protocols tailored to the specific needs and risks associated with that part of the network.

Additionally, segmentation allows for better management of network traffic, reducing congestion and improving performance. For example, a heavily used segment dedicated to voice over IP (VoIP) communication can be separated from a segment meant for general data traffic, ensuring that call quality is maintained.

This approach also facilitates compliance with regulatory requirements by allowing organizations to apply different levels of security controls and monitoring based on the criticality of the data being handled in each segment. Overall, network segmentation is a strategic security measure that helps organizations better manage their network environment.