The document discusses key concepts related to the internet including how it functions as an internetworking technology allowing devices to connect globally through IP addresses. It also mentions how users can access websites through URLs and use search engines to find information online. Some potential risks of internet use are discussed like the possibility of encountering inappropriate content or having personal information hacked when online.

1. 4.1
– 4 7
1. (Internet)
Internet )
Cyberspace )
Internetworking )
2.
www
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3.
ip address
IP Address
4
IP Address 192.168.0.1
4.
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5.
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2. ...................................................................
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6.
http://www.oknation.net/blog/nakhornsi/2009/10/14/entry-1
7.
31 2492
3
http://www.ru.ac.th/province/prachinburi/goodper/surb/surb.ht
m

3. 4.2
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-
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- Search Engine
- “Work@home”
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hack
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4. -
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- MP3
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-
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- (Chat Room)