Connectionless Versus Connection-Oriented Communications
The Internet Protocol was originally designed for packet-switched networks. That means each packet is handled as a separate message. When IP sends a packet to its destination, it selects the best route based on current conditions. As the state and performance of the network change, so do routing decisions. The most direct path to a destination may not be the best route if it’s congested. A longer route with less traffic may be faster. As more and more protocols depend on real-time delivery, speed is often one of the most important delivery measurements. IP treats each packet separately, so there is no notion of a connection between the source and destination nodes. IP is called a connectionless ...
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