What technique has been widely used to manage growth limitations in IP addressing?

The technique that has been widely used to manage growth limitations in IP addressing is subnetting. Subnetting allows for the division of a larger network into smaller, manageable subnetworks or subnets. This practice enhances the efficient use of IP addresses by allocating address blocks to different subnets based on the specific needs of various departments, locations, or services within an organization.

By creating subnets, organizations can reduce network congestion, enhance security by isolating different parts of the network, and easily manage IP address assignments. Subnetting also facilitates better address utilization, particularly important given the limitations in address space, especially in IPv4, where the number of available addresses is finite.

In comparison, while address pooling, dynamic addressing (such as DHCP), and IP reservations do have roles in IP address management, they are more focused on the allocation and assignment of addresses rather than the structured segmentation of a network that subnetting provides. Address pooling generally refers to a method of temporarily granting access to IP addresses, dynamic addressing allows devices to obtain IP addresses from a pool dynamically, and IP reservations ensure that certain devices always receive the same IP address. Each of these methods supports address management but doesn't inherently solve the issue of efficiently managing growth limitations in the broader context of network design