What is the Internet and how does it work?

A huge network formed by connecting networks with each other. These networks are connected by a set of common protocols to form a logically single huge international network. Usually internet refers to the Internet in general, while Internet refers specifically to the Internet.

This method of connecting computer networks together is called "network interconnection". On this basis, a global Internet network covering the whole world is developed, which is called the Internet, which is a network structure connected to each other.

Working principle:
A computer network is made up of many computers. To achieve data transmission between computers in the network, two things must be done: the destination address of the data transmission and measures to ensure that the data is transmitted quickly and reliably. This is because data can be easily lost or transmitted incorrectly during the transmission process.

The Internet uses a special computer language (protocol) to ensure that data reaches the designated destination safely and reliably. This language is divided into two parts: TCP (Transmission Control Protocol) and IP (Internet Protocol) ensure network marketing theory.

Data transmission process of TCP/IP protocol: The communication method adopted by TCP/IP protocol is packet switching. The so-called packet switching is simply data.

During transmission, the data is divided into several segments, each of which is called a data packet. The basic transmission unit of the TCP/IP protocol is the data packet. The TCP/IP protocol mainly includes two main protocols, namely the TCP protocol and the IP protocol. These two protocols can be used in conjunction with each other or with other protocols. They mainly complete the following functions during data transmission:

1) First, the TCP protocol divides the data into several data packets and writes a sequence number to each data packet so that the receiving end can restore the data to its original format.

2) The IP protocol writes the addresses of the sending host and the receiving host to each data packet. Once the source address and destination address are written, the data packet can transmit data on the physical network. The IP protocol also has the function of using routing algorithms for route selection.

3) These data packets can be transmitted through different transmission paths (routes). Due to different paths and other reasons, the order may be reversed, data may be lost, data may be distorted or even duplicated. These problems are all handled by the TCP protocol, which has the function of checking and handling errors, and can also request the sender to resend when necessary. In short, the IP protocol is responsible for data transmission, while the TCP protocol is responsible for reliable data transmission.

The Internet is widely used in real life. You can chat, play games, check things, etc. on the Internet. More importantly, advertising and shopping can also be done on the Internet. The Internet brings great convenience to real life. Internet users can find what they need for their studies and careers in digital knowledge bases on the Internet, thereby helping them with their work and study.

The Internet is widely used in reality. Hundreds of millions of people use the Internet every day. They use it to chat, get information, shop, etc. There are also some people who use the Internet to promote their products. This has also led to the birth of some emerging industries, such as online marketing, etc. The influence of the Internet is increasingly affecting our lives, and we will also gain greater changes as a result.