1.1 The role of computer networks in the information age
- Computer network has developed from a communication infrastructure to an important information service infrastructure.
- Computer networks have become as indispensable a part of our lives as basic facilities such as water, electricity and gas.
1.2 Overview of the Internet
- The Network, the Internet and the Internet
- The three stages of Internet development
- Standardization of the Internet
- The Composition of the Internet
1.2.1 Networks, the Internet (Internet) and the Internet
- A network consists of nodes and the links that connect them.
- Multiple networks can also be interconnected through routers, creating a larger network called the Internet (or Internet). Therefore, the Internet is “a network of networks”.
- The Internet is the world’s largest interconnection network (with hundreds of millions of users and millions of interconnected networks).
The difference between Internet and Internet
- Internet is a generic term that refers to a network of interconnected computers. The communication protocols between these networks can be arbitrary.
- Internet(Internet) is a special term, it refers to the world’s largest, open, by a number of networks connected to each other into a specific computer network, it uses TCP/IP protocol family as the rules of communication, its predecessor is the United States ARPANET.