What is distance vector routing? Briefly discuss the problem of distance vector routing.

Distance vector routing is a fundamental networking algorithm used to determine the optimal paths for data packets to travel through a network from a source to a destination. It falls under the broader category of routing protocols, which are responsible for making decisions about how to forward data in a computer network. Distance vector routing operates by having each router maintain a table that lists the distance (or cost) to reach each destination network in the network topology.

In a distance vector routing algorithm, routers exchange information about their routing tables with their neighboring routers. This information includes the distance (cost) to reach various destination networks and the next-hop router that should be used to reach them. Over time, routers update their routing tables based on the information they receive from their neighbors.

The most well-known distance vector routing protocol is the Routing Information Protocol (RIP). RIP uses a simple metric, usually hop count (the number of routers or hops a packet __________ ______ _____ __________ ____ ________.
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