What does subnetting allow a network administrator to do?

Subnetting is a technique used by network administrators to divide a larger IP network into smaller, more manageable sub-networks, or subnets. This process helps optimize network performance, enhances security, and simplifies management. By segmenting the network, each subnet can be configured to suit specific requirements, such as addressing schemes, traffic management, and security policies.

For instance, in a large organization, subnetting enables the creation of distinct subnets for different departments, allowing for better control over network traffic and access policies. This also helps in efficient use of IP address space and reduces broadcast domains, which can minimize network congestion and improve overall reliability.

While integrating wireless devices, providing internet access to guest users, and encrypting data are all important network functions, they do not directly relate to the core purpose of subnetting. Subnetting focuses specifically on the logical segmentation of IP networks, making it a fundamental skill for effectively managing large networks.