The Internet is based upon a networking protocol called IPv4, which is the underlying basis for both TCP (used by HTTP and chat applications) and UDP (used for video and audio applications).
互联网是基于名为IPv4的网络协议的，该协议是TCP (HTTP及聊天应用使用)与UDP(视频与音频应用使用)的基石。
Recall that the Internet protocol (IP) is the core network layer protocol that sits below the transport protocol (most commonly the Transmission Control protocol, or TCP).
回想一下，Internet Protocol (IP)是传输协议(通常称为传输控制协议或TCP)下面的核心网络层协议。
The result was a suite of internetworking protocols known as TCP/IP (after the first two protocols defined by the standard, Transmission Control Protocol and Internet Protocol).
结果，名为TCP/IP的一套网络互联协议（在首批标准化的两个协议——即传输控制层协议和互联网协议后）产生。
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