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How does TCP/IP allow computers to communicate over long distances?

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TCP/IP, or the Internet protocol suite, enables computers to communicate over long distances by utilizing a packet-switched network architecture. This system functions through two primary, complementary protocols:12

Transmission Control Protocol (TCP): This component is responsible for breaking down data into small, manageable packets before transmission. Once these packets travel across various network routes, TCP collects and reassembles them in the correct order at the receiving end.13
Internet Protocol (IP): This component acts as the system's "trip coordinator." It handles the addressing and routing of packets, ensuring that each piece of data is directed to the correct destination.123

By standardizing how data is packaged, addressed, and routed, TCP/IP allows diverse computer networks to integrate seamlessly. This open architecture enables efficient and reliable communication across a vast, interconnected "network of networks," forming the essential backbone of the modern Internet.23