Packets are small units of data that are transmitted over a network, allowing for efficient communication and data transfer. Each packet contains not only the data being sent but also information about its origin, destination, and sequence, which is crucial for routing the packets correctly through the network. Routing involves determining the best path for these packets to travel, often using dynamic algorithms that adapt to network conditions and congestion. To ensure reliability, protocols like TCP (Transmission Control Protocol) implement error-checking, retransmission of lost packets, and acknowledgment systems to verify that data is received accurately and in the correct order.
In 3-4 sentences explain something interesting about packets, routing and reliability
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