What is network segmentation?

Network segmentation involves dividing a larger computer network into smaller, more manageable segments or subnetworks. This approach offers several advantages, such as improved performance, enhanced security, and easier management of network traffic. By breaking a network into segments, organizations can limit broadcast traffic, isolate sensitive data, and contain potential security breaches within a specific segment. This strategy allows for better control over the flow of data and access to resources, as different segments can have customized security policies based on their specific needs.

In contrast to the other options, a single access point for all users typically leads to a flat network structure, which may increase vulnerability to attacks and broadcast issues. Connecting various networks focuses on inter-network communication rather than the segmentation of a single network, which often does not address security or performance directly. Lastly, simply increasing the number of users on a network without segmentation can lead to congestion and security risks, rather than optimizing the network's structure. Therefore, the concept of network segmentation is critical in protecting and efficiently managing network resources.