Final answer:
Unicast routing is the process where a router forwards a packet through only one of its interfaces, targeting one specific receiver with a unique address, different from multicast, broadcast, or anycast routing methods.
Step-by-step explanation:
In the context of routing, when a router forwards the received packet through only one of its interfaces, the process is referred to as unicast routing.
Unicast routing is a method used in network communications where information is sent from one sender to one receiver. Each device on the network has a unique address, and when a packet is sent using unicast, the packet is directed to a specific device with a matching destination address. In contrast, multicast routing allows for the packet to be sent to multiple specified receivers, and broadcast routing sends out a packet to all devices within a network segment. Anycast routing is similar to unicast in that the packet is sent to a single receiver, but the difference lies in the fact that the packet is sent to the nearest (usually in terms of routing distance) of several potential receivers all having the same destination address.