Final answer:
Subnetting refers to dividing an IP address range into smaller, manageable parts called subnets. It increases network efficiency and provides better IP address utilization.
Step-by-step explanation:
IP Address Subnetting
Splitting an IP address range into smaller parts is commonly referred to as subnetting. Subnetting is a crucial concept in network design that allows for better utilization of IP address spaces and increased network security and efficiency. The process involves dividing a large network into smaller, manageable sub-networks. This is particularly useful for organizing networks logically and conserving IP addresses. Subnetting is achieved by manipulating the subnet mask, which determines the size of the subnet. Different subnets will have a different number of available IP addresses, based on their subnet mask.