To improve network efficiency, which address scheme can be used for managing IP address allocation?

Dynamic Host Configuration Protocol (DHCP) is the correct choice for improving network efficiency through effective management of IP address allocation. DHCP automates the process of assigning IP addresses to devices on a network, significantly reducing the potential for human error that can occur with manual IP assignments.

With DHCP, when a device connects to the network, it requests an IP address from the DHCP server, which efficiently allocates an available address from a predefined pool. This process also allows for the dynamic reassignment of IP addresses, meaning that devices can be seamlessly added or removed from the network without requiring manual configuration. As a result, DHCP helps in optimizing address usage, reducing waste, and simplifying network management.

In contrast, static IP addressing involves manually assigning fixed IP addresses to devices, which can become cumbersome and inefficient, especially in larger networks. Classful addressing refers to a method of organizing IP addresses into classes, which is not optimal for modern networking needs and does not directly address address allocation management. The Domain Name System (DNS) translates domain names into IP addresses, but it does not manage the allocation of those addresses.

Using DHCP improves overall network efficiency by streamlining IP address distribution and ensuring that all devices are properly configured with the correct addressing information.