The network protocol used by the Internet is "TCP/IP protocol". TCP/IP refers to Transmission Control Protocol/Internet Protocol, also known as network communication protocol. It is a protocol suite that can realize information transmission between multiple different networks. The TCP/IP transmission protocol stipulates the standards and methods for communication between various parts of the Internet; and, the TCP/IP transmission protocol is two important protocols that ensure the timely and complete transmission of network data information.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
The network protocol used by the Internet is "TCP/IP protocol".
TCP/IP (Transmission Control Protocol/Internet Protocol), also known as network communication protocol, refers to a protocol suite that can realize information transmission between multiple different networks . The TCP/IP protocol not only refers to the two protocols TCP and IP, but also refers to a protocol cluster composed of FTP, SMTP, TCP, UDP, IP and other protocols. Just because in the TCP/IP protocol, the TCP protocol and the IP protocol The most representative, so it is called TCP/IP protocol.
TCP/IP transmission protocol is the most basic communication protocol used in the network. The TCP/IP transport protocol stipulates the standards and methods for communication between various parts of the Internet. Moreover, TCP/IP transmission protocols are two important protocols that ensure timely and complete transmission of network data information. The TCP/IP transmission protocol is strictly a four-layer architecture, including the application layer, transport layer, network layer and data link layer.
TCP/IP protocol is the most basic protocol of the Internet. The main protocols of the application layer include Telnet, FTP, SMTP, etc., which are used to receive data from the transport layer or Transmit data to the transport layer according to different application requirements and methods; the main protocols of the transport layer are UDP and TCP, which are channels for users to use the platform and the internal data of the computer information network to achieve data transmission and data sharing; the main protocols of the network layer The protocols include ICMP, IP, and IGMP, which are mainly responsible for the transmission of data packets in the network; the network access layer, also called the network interface layer or data link layer, has the main protocols ARP and RARP, and its main function is to provide link management error detection. , effectively handle information details related to different communication media, etc.
Features
The TCP/IP protocol can develop rapidly and become a de facto standard because it just meets the needs of data communication around the world. It has the following characteristics:
(1) The protocol standard is completely open, can be used by users for free, and is independent of specific computer hardware and operating systems.
(2) It is independent of the network hardware system, can run on the wide area network, and is more suitable for the Internet.
(3) Network addresses are uniformly allocated, and each device and terminal in the network has a unique address.
(4) High-level protocol standardization can provide a variety of reliable network services.
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