Which term describes the logical division of a network of connected devices based on IP addresses?

• A. Domain
• B. LAN
• C. Subnet
• D. Segment

Answer: (C)

Dividing a network by IP address boundaries is called subnetting, creating subnets. A subnet uses a subnet mask to separate the IP space into smaller, logically defined networks. This means devices within the same subnet share a common network portion of their IP addresses, while routers connect traffic between different subnets. The purpose is to organize the network efficiently, limit broadcast domains, and simplify routing.

Other terms don’t capture this IP-based division as precisely. A domain is about administrative or naming boundaries, not how the network is sliced by IP addresses. A LAN describes the local, typically physical network, but not the logical subdivision based on IP ranges. A segment often refers to a physical portion of the network (like a piece of a shared medium or a specific link), which isn’t inherently defined by IP addressing.