The process of creating logical divisions of an IP network to increase routing efficiency and privacy is called:

• A. Subnetting
• B. Subnet Masking
• C. Subnet Creation
• D. Network Segmentation

Answer: (A)

Dividing an IP network into smaller, logically defined pieces is called subnetting. By applying a subnet mask to IP addresses, you separate the network into subnets, which makes routing more efficient because routers can use shorter, more precise routing tables and even summarize routes. It also confines broadcast traffic to within each subnet, reducing unnecessary noise and helping isolate traffic between segments, which enhances privacy.

Subnet masking is the specific mechanism used to separate the network portion from the host portion of an address; it’s essential to subnetting but describes the tool rather than the overall process. Subnet creation isn’t a standard term for this practice. Network segmentation is a broader concept that can involve dividing a network for security or management purposes, but the established IP addressing practice for creating logical divisions with masks is subnetting.