ARPANET was the predecessor to the modern Internet. Several regional Internet registries (RIRs) were established to manage IP addresses and domain names regionally, including ARIN, RIPE, APNIC, AfriNIC, and LACNIC. Key elements of Internet infrastructure include IP versions 4 and 6, the Domain Name System (DNS), and search engines that index the public web and allow users to search content online.

2. •
ARPANET
ARPANET
ISOC
IAB
ICANN

3. • - ARIN (American Registry for Internet Numbers)
• - RIPE (Reseaux IP Europeens Network
Coordination Center)
• - APNIC (Asia Pacific Network Information Center)
-
ISP (Internet Service Provider)
CATTelecom, TOT, True BB
IP Address Domain APNIC
• - AfriNIC (African Network Information Center)
• - LACNIC (Latin America and Caribbean Network
Information Center)

4. • IP Address)
IP)
• 1. IP Version 4 (IPv4)
IPv4
• - Private IP)
• - Public IP)

5. • Domain
Name System
•
• - com
• - net
• - org
•
• - co.th
• - or.th
• - ac.th

6. •
•
-
•
• - domain
• 5.
search engine)

7. •
• Keyword Index
-
Search Engine
-
• Subject Directories Search
Engine

8. •
• Google) 2. Yahoo)
• 3. MSN Bing) 4.
AOL)
• 5. Ask) 6. Baidu)
• Cuil 8. Yandex)

9. •
• site:
URL
admission
admission site:www.tu.ac.th
• 2. Link
•
link: URL link:www.tu.ac.th
• 3.
• filetype:
filetype Microsoft Powerpoint
2007 filetype:pptx

10. • 4.
Google Cached
google
cache
• E-mail
E-mail
E-mail
mict.go.th
• 6.

11. •
• -
google, bing
yahoo
• -
www.linkedin.com
• -
www.yellowpages.co.th
• 2.
• -
Phonebook
TOT phonebook.tot.co.th
• - IP Address Public IP

12. • 3.
• - google caching
• – way back
Internet Archive)