Which type of address provides one-to-one communication?

Unicast addressing is designed specifically for one-to-one communication between a sender and a receiver. In a unicast communication scenario, a single sender transmits data to a single recipient using a unique IP address assigned to that recipient. This type of addressing ensures that the information is directed only to the specified device, allowing for a direct and dedicated communication channel.

In contrast, anycast involves sending data to the nearest or best-suited recipient from a group of potential receivers, which does not guarantee a direct one-to-one connection. Multicast allows data to be sent from one sender to multiple designated recipients simultaneously, thereby enabling group communication rather than individual communication. Broadcast, on the other hand, sends data from one sender to all possible recipients within the network, which also fundamentally differs from the one-to-one nature of unicast.