Meaning of the communication protocol

How can we understand the meaning of our so-called communication protocol? Who defined this standard? We will discuss this topic briefly. Communication Protocol-one of the earliest protocols in the Open System Interconnection protocol, which provides communication support for interconnected networks connected to different operating systems and different hardware architecture, it is a common network language. The TCP/IP protocol defines how to transmit and manage information (such as file transfer, email sending and receiving, and remote logon) in an interconnected network ), and formulated rules that must be followed when an error occurs ｡

Communication protocols are rules for transmitting and managing information on networks (including the Internet ｡

A communication protocol, also known as a communication procedure, is an agreement between the communication parties on data transmission control. The agreement includes the data format, synchronization mode, transmission speed, and transmission steps, make unified provisions on the methods of checking and correcting errors and the definition of control characters. The communication parties must abide by them. This is also called the link control procedure ｡

Communication between computers must tell the same language before information can be transmitted to each other. Natural information can be transmitted over the Internet, each copy must meet certain specifications (that is, the same language). Otherwise, how can I accept the materials sent from China in the United States?

These specifications (Languages) are described at the conference table in advance. Generally, we call them "protocols", which define data transmission specifications on the network, we are collectively referred to as communication protocols ｡

In fact, the communication protocols used by each network are not the same, but we use the most commonly used Internet as an example. When the data is sent to the Internet, you must use the communication protocol for Internet ｡

For example, communication between people must follow certain rules, and mutual communication between computers must comply with certain rules. These rules are called network protocols. common protocols include: TCP/IP protocol, IPX/SPX protocol, and NetBEUI protocol. IPX/SPX is usually used in LAN, you must add the TCP/IP protocol to the network protocol ｡

TCP/IP is short for "transmission Control Protocol/Internet Protocol ｡

TCP/IP is a network communication protocol, which regulates all communication devices on the network, in particular, the data exchange format and transmission mode between a host and another host. TCP/IP is the basic protocol of the INTERNET and a standard method for packaging and addressing computer data ｡

In data transmission, two envelopes can be visually resolved. The TCP/IP and IP are like an envelope. The information to be transmitted is divided into several segments, each of which is inserted into a TCP envelope, record the information of the segment number on the envelope, insert the TCP envelope into the IP address envelope, and send the information to the Internet ｡

On the receiving end, a TCP Software Package collects envelopes, extracts data, restores the data in the order before sending, and verifies the data. If an error is found, TCP requests to resend the data. Therefore, TCP/IP can transmit data almost without errors over the INTERNET. For common users, you do not need to understand the entire structure of the network protocol. You only need to know the IP address format, you can communicate with networks around the world ｡