The document discusses the basics of how the internet works. It explains that the internet is a worldwide connection of computers called the Internet. It also defines URLs as the address for pages on the World Wide Web. Finally, it describes IP addresses as a unique number that devices use in order to identify and communicate with each other on both local networks and the Internet.

1. 4.1
–
4
1. Internet)
Internet )
2.
URL

2. INTERNET
3.
IP ADDRESS
IP Address
Internet Protocal
Address
TCP/IP
IP

3. IP
4
192.168.100.1
172.16.10.1 IP
Address
4 Network
ID Host ID
computer network
network
Network ID Host

4. ID IP Address
class
4.
5.

5. 6.
http://th.wikipedia.org/wik
7.
(31 2492 — 1

6. 2533)
http://th.wikipedia.org/wik

7. 4.2
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-

8. -
- Search Engine
- “Work@home”
-
-
-
-
-

9. -
- MP3
-
-
-
-
-
-

10. - Chat
Room)
1
1.1
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12. 1.3
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