A suite of communication protocols that forms the foundation of internet communication, centered on the Transmission Control Protocol (TCP) and the Internet Protocol (IP). While applications such as web browsers and email clients use their own protocols (HTTP, SMTP, POP, etc.), TCP/IP operates at a lower layer to provide the common data-transport functions shared by all of them. It serves as the essential infrastructure underlying virtually all internet communication.

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• 2023r05 #68インターネット上のコンピュータでは，Web や電子メールなど様々なアプリケーションプログラムが動作し，それぞれに対応したアプリケーション層の通信プロトコルが使わ…