Explain Shortest Path Routing Algorithm.

Shortest Path Routing Algorithm is a fundamental concept in data communication and computer networks, primarily used for determining the most efficient path for data to travel from a source to a destination across a network. The algorithm plays a crucial role in routing decisions and is integral to the operation of various network protocols. In this context, the shortest path is typically understood as the path with the least cost, where cost could be measured in terms of distance, delay, bandwidth, or any other metric deemed relevant for the network. The algorithm ensures that data packets take the optimal route, minimizing delays and reducing the load on network resources.

### The Dijkstra Algorithm

One of the most widely known and used shortest path routing algorithms is Dijkstra’s Algorithm. Developed by Edsger Dijkstra in 1956, this algorithm computes the shortest paths from a source node to all other nodes in a weighted graph. It is a greedy algorithm, meaning that it makes the locally optimal choice at each stage with the hope of finding the global optimum.

#### Working of Dijkstra’s Algorithm:

The algorithm works by iteratively selecting the node with the smallest tentative distance, updating the distance estimates for its neighbors, and marking it as permanently labeled once it has been processed. This procedure continues until the destination node is reached or all nodes have been processed.

1. Initialization: 
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