TCP-IP
Domain: Computer Systems
🎯 Motivation
The protocol suite that runs the internet. TCP ensures reliable delivery; IP routes packets to the right address.
📋 Concrete Example
TCP/IP: you send Hello to a server. TCP breaks it into packets, numbers them, sends them. IP routes each packet to the server. TCP reassembles them. If a packet is lost, TCP resends it. Reliable.
🔗 Analogy
TCP/IP is like the postal system - IP is the address system (where does this letter go?), TCP is the delivery guarantee (was it received? if not, resend). Together, they ensure reliable data delivery.