What is network segmentation?

Network segmentation involves dividing a larger network into smaller, more manageable sub-networks or segments. This practice has several beneficial implications for security, performance, and data management. By creating distinct segments, an organization can better control traffic within each segment, limit the potential attack surface, and enhance overall security.

For instance, if one segment is compromised, the threat can be contained without affecting the entire network, thereby reducing the risk of widespread data breaches. Additionally, segmentation can optimize performance by localizing traffic and reducing congestion. It can also help in adhering to compliance requirements by ensuring that sensitive data is separated from less critical information.

The other choices do not accurately reflect the concept of network segmentation. Combining multiple networks into one describes a consolidation process rather than segmentation. A method of securing browser connections refers to encryption protocols such as HTTPS, which is unrelated to network structure. Lastly, creating a public network environment suggests a networking scenario that lacks the restrictions inherent in segmentation, which aims to enhance security rather than broaden access.