วันจันทร์ที่ 4 ตุลาคม พ.ศ. 2553

How does the internet work .

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. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic and optical networking technologies. The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents of the World Wide Web (WWW) and the infrastructure to support electronic mail.
Most traditional communications media including telephone, music, film, and television are being reshaped or redefined by the Internet. Newspaper, book and other print publishing are having to adapt to Web sites and blogging. The Internet has enabled or accelerated new forms of human interactions through instant messaging, Internet forums, and social networking. Online shopping has boomed both for major retail outlets and small artisans and traders. Business-to-business and financial services on the Internet affect supply chains across entire industries.

the  picture below illustrates two computers conected to the internet your computer with IP address 1.2.3.4 and another computer with  IP address 5.6.7.8. the internet is repersent as an abstract object in between .(As this paper, the Internet portion of Diagram 1 will be explained and redrawn several times as the details of the Internet are exposed.)

http://en.wikipedia.org/wiki/Internet

2.What is the Internet protocol ?

The Internet Protocol (IP Addresses) 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. For this purpose, IP defines addressing methods and structures for datagram encapsulation.

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. For this purpose, IP defines addressing methods and structures for datagram encapsulation.

http://en.wikipedia.org/wiki/Internet_Protocol

3.What is the 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. A layer is a collection of conceptually similar functions that provide services to the layer above it and receives services from the layer below it. On each layer an instance provides services to the instances at the layer above and requests service from the layer below.

For example, a layer that provides error-free communications across a network provides the path needed by applications above it, while it calls the next lower layer to send and receive packets that make up the contents of the path. Conceptually two instances at one layer are connected by a horizontal protocol connection on that layer.

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[1][2]. If any of these systems and services were to be interrupted for a significant period of time "[t]he Internet...as we know it would collapse

http://en.wikipedia.org/wiki/Critical_Internet_infrastructure

5.What is domain names ?

Domain name speculation is the practice of identifying and registering or acquiring Internet domain names with the intent of selling them later for a profit.
The main targets of domain name speculation are generic words which can be valuable for type-in traffic and for the dominant position they would have in any field due to their descriptive nature. Hence generic words and phrases [1] such as poker, insurance, travel, creditcards, sex and others are attractive targets of domain speculation in any top-level domain.
The speculative characteristics of domain names may be linked to news reports or current events. However, the effective period during which such opportunities exist may be limited. Quick turnaround in the resale of domains is often called domain flipping.

http://en.wikipedia.org/wiki/Domain_name_speculation

6.What is world wide web and its senices ? 

The World Wide Web, abbreviated as WWW and commonly known as the Web, is a system of interlinked hypertext documents accessed via the Internet. With a web browser, one can view web pages that may contain text, images, videos, and other multimedia and navigate between them by using hyperlinks. Using concepts from earlier hypertext systems, English engineer and computer scientist Sir Tim Berners-Lee, now the Director of the World Wide Web Consortium, wrote a proposal in March 1989 for what would eventually become the World Wide Web.[1] At CERN in Geneva, Switzerland, Berners-Lee and Belgian computer scientist Robert Cailliau proposed in 1990 to use "HyperText [...] to link and access information of various kinds as a web of nodes in which the user can browse at will",[2] and publicly introduced the project in December.[3]

http://en.wikipedia.org/wiki/World_Wide_Web

7.How many Internet useing in Thailand ?

Thailand (pronounced /ˈtaɪ.lænd/ TYE-land or /ˈtaɪ.lənd/[5]; Thai: ราชอาณาจักรไทย Ratcha Anachak Thai, IPA: [râːtɕʰa ʔaːnaːtɕɑ̀k tʰɑj]  ( listen)), formerly Siam (Thai: สยาม, IPA: [sàjǎːm]  ( listen)), is an independent country that lies in the heart of Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and the southern extremity of Burma. Its maritime boundaries include Vietnam in the Gulf of Thailand to the southeast and Indonesia and India in the Andaman Sea to the southwest.
The country is a kingdom, a constitutional monarchy with King Bhumibol Adulyadej, the ninth king of the House of Chakri, who has reigned since 1946, making him the world's longest-serving current head of state and the longest-reigning monarch in Thai history.[6] The king is officially titled Head of State, the Head of the Armed Forces, an Upholder of the Buddhist religion, and the Defender of all Faiths.
The largest city in Thailand is Bangkok, the capital, which is also the country's center of political, commercial, industrial and cultural activities.
Thailand is the world's 50th largest country in terms of total area (slightly smaller than Yemen and slightly larger than Spain), with a surface area of approximately 513,000 km2 (198,000 sq mi), and the 20th most-populous country, with approximately 66 million people. About 75% of the population is ethnically Thai, 14% is of Chinese origin, and 3% is ethnically Malay;[7] the rest belong to minority groups including Mons, Khmers and various hill tribes. There are approximately 2.2 million legal and illegal migrants in Thailand.[8] Thailand has also attracted a number of expatriates from developed countries.[9] The country's official language is Thai. Its primary religion is Buddhism, which is practiced by around 95% of all Thais.

http://en.wikipedia.org/wiki/Thailand





 

 

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