All computers connected to the Internet must comply with a common protocol called "TCP/IP protocol"; Internet protocol is a network communication model and an entire network transmission protocol family, which is the basic communication architecture of the Internet and is Collectively called the "TCP/IP protocol suite", the two core protocols are TCP (Transmission Control Protocol) and IP (Internet Protocol).
The operating environment of this tutorial: Windows 10 system, DELL G3 computer.
All computers connected to the internet must comply with the TCP/IP protocol.
Internet protocol is a network communication model and an entire network transmission protocol family, which is the basic communication architecture of the Internet. It is often commonly referred to as the TCP/IP protocol suite, or TCP/IP for short. Because the two core protocols of this protocol family: TCP (Transmission Control Protocol) and IP (Internet Protocol), are the earliest standards adopted in the family.
TCP/IP provides a point-to-point link mechanism that standardizes how data should be encapsulated, addressed, transmitted, routed, and received at the destination. It abstracts the software communication process into four abstraction layers, which implement different communication protocols respectively. Various protocols under the protocol family are classified into these four hierarchical structures according to their different functions, and are often regarded as a simplified seven-layer OSI model.
TCP/IP protocol
A protocol cluster that can realize information transmission between multiple different networks
TCP/IP (Transmission Control Protocol/Internet Protocol) refers to a protocol that can transmit information between multiple different networks cluster. TCP/IP protocol not only refers to the two protocols TCP and IP, but 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 IP protocol The most representative, so it is called TCP/IP protocol.
TCP/IP transmission protocol, namely transmission control/network protocol, is also called network communication protocol. It is the most basic communication protocol used in networks. 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 according to different application requirements and methods. to the transport layer; the main protocols of the transport layer are UDP and TCP, which are the channels through which users use the platform and the internal data of the computer information network to realize data transmission and data sharing; the main protocols of the network layer are ICMP, IP, and IGMP. Responsible for the transmission of data packets in the network; and the network access layer, also called the network interface layer or data link layer, the main protocols are ARP, RARP, the main function is to provide link management error detection, information details related to different communication media Perform effective processing, 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:
The protocol standard is completely open, can be used by users for free, and is independent of specific computer hardware and operating systems.
Independent of the network hardware system, it can run on the wide area network and is more suitable for the Internet.
Network addresses are uniformly assigned, and each device and terminal in the network has a unique address.
High-level protocol standardization can provide a variety of reliable network services.
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