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Chapter 2: The Internet

In chapter 1, we have discussed roughly on what internet is all about. In this chapter, we are going to discuss the evolution of computers and how do we connect to internet.

Evolution of computers

Internet was first known as ARPANET in 1969 with two main goals:
1. Allow scientists at different physical locations to share information and work together
2. Function even if part of the network were disabled or destroyed by a disaster

In 1984, ARPANET has more than 1,000 individual computers linked as hosts and today millions of hosts are connected to the Internet!

Internet is obviously used worldwide by millions of people including companies and governments. Have you ever wonder how they are connected to it?

Type of connections to internet

There are two types of connections:
1. wired connection where computer is physically connected using wire to a modem (a communication device).
2. wireless connection where computers without a communication device can use this.

Figure 2.1 Connections of computer to internet though cable and without cable.
Figure 2.2 Popular domain used on internet.

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