What does subnetting involve?

Subnetting involves dividing a larger network into smaller, more manageable sub-networks, also known as subnets. This process is essential for efficient network management, routing, and utilization of IP address space. By breaking a network into smaller segments, subnetting enhances organization and improves performance by reducing network congestion. It allows for better allocation of IP addresses, making network design more flexible and scalable.

Each subnet can operate independently, facilitating easier management of network resources, improved security, and better control of broadcast traffic. This is particularly important for large organizations that might have various departments needing separate networks while still being part of the same overarching infrastructure.

Options related to reassigning external IP addresses, creating secure connections, or increasing bandwidth through link aggregation do not accurately capture the fundamental concept of subnetting. These involve different aspects of network management and optimization rather than the specific process of organizing and structuring addresses within a network.