1. What is the internet?
The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users worldwide.
http://en.wikipedia.org/wiki/Internet
2. What is Internet Protocol? (IP Address)
The Internet Protocol (IP) is the principal communications protocol used for relaying datagrams (packets) across an internetwork using the Internet Protocol Suite. Responsible for routing packets across network boundaries, it is the primary protocol that establishes the Internet.
IP is the primary protocol in the Internet Layer of the Internet Protocol Suite and has the task of delivering datagrams from the source host to the destination host solely based on their addresses.
http://en.wikipedia.org/wiki/Internet_Protocol
3. What is OSI Model?
The Open Systems Interconnection model (OSI model) is a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a way of sub-dividing a communications system into smaller parts called layers.
http://en.wikipedia.org/wiki/OSI_Model
4. What is Internet Infrastructure?
Internet infrastructure is a collective term for all hardware and software systems that constitute essential components in the operation of the Internet. Physical transmission lines of all types, such as wired, fiber optic and microwave links, along with routing equipment, the accompanying critical software services like the Domain Name System (DNS), Email, website hosting, authentication and authorization, storage systems, and database servers are considered critical Internet components. If any of these systems and services were to be interrupted for a significant period of time, the Internet would not work.
http://en.wikipedia.org/wiki/Critical_Internet_infrastructure
5. What is domain names?
A domain name is an identification label that defines a realm of administrative autonomy on the Internet, based on the Domain Name System (DNS).
Domain names are used in various networking contexts and application-specific naming and addressing reasons.
http://en.wikipedia.org/wiki/Domain_names
6. What is World Wide Web? and its services? How many Internet users in Thailand?
The World Wide Web, abbreviated as WWW and commonly known as the Web, is a system of interlinked hypertext documents accessed via the Internet. (http://en.wikipedia.org/wiki/World_wide_web)
It provides a countless amount of services such as: research, it provides information, communication, news, games, blogging, and collaboration.
18,310,000 people use internet services in Thailand (http://internet.nectec.or.th/webstats/home.iir?Sec=home)
