Content of P1

INTERNET

As we all know, people and internet can't be separated because this is the only way for them to communicate with other people from outside or inside the country. Based from my opinion, internet is a system that have been created or designed for people to communicate among themselves. Apart from communication, people that used to have a business such as an online seller use internet as their way to communicate with their customer and also the supplier. By using internet, they also can do a business research, promoting their products, advertise their business and many more.

How does the internet works?

In order to connect to internet, every computers must have a unique IP address. An IP address is known as Internet Protocol addresses which can be defined in the form nnn.nnn.nnn.nnn where n must be a number from 0-255. The diagram shows how internet connected to 2 different computers. Based from the diagram, in order to connect to different computer, they need a router as an intermediary between internet and the computer itself.

Diagram 1: hows internet connected to different computers

What is a server?

Based from the research, a server refer to a computer program which provides a service to another computer program and its user. There are few types of server, such as:

• An Application Server
• A Proxy Server
• A Mail Server
• A Virtual Server
• A Blade Server and also known as server blades
• A File Server
• A Policy Server

What are the types of tconnection o the internet?

Obviously, there are many ways for an electric device such as mobile phone, laptop and personal computer can connect to the internet. Computer networks come in may forms and there are 3 basic types of network connection, they are:

1. Point-to-point: the connections that only allow one device to communicate with one other device.
2. Broadcast / multicast: the connections that allow a device to send message and have the copied of that message.
3. Multipoint: the connection that allow one device to connect and send messages to any devices in parrallel.

Nowadays, these are the most commons types of connection that have been used:

• Fixed Broadband Internet
• Mobile Internet
• Virtual Private Network (VPN)
• Dial-Up Networks
• Local Area Network (LAN)
• Direct Networks

Equipment to set-up internet

Diagram 2: A Modem

Modem is a network hardware device that allows a computer to send and receive data over a telephone line or a cable or satellite connection. Internet is usually comes from the telephone line, so in order to connect internet to computer, we need a modem and from modem we can connect internet to computers. Apart from that, there are other equipment that also helps to connect internet from the modem and it known as router.

Diagram 3: A Router

Diagram 4: Networking Cable

Router is a small, single-purpose computer that receives information from a modem. Using a networking cable, a modem can connect to router and from there can provide a wireless. Diagram 5 shows the stage of the connection from the internet itself until all of the devices using a modem and router.

Diagram 5: Modem and router connected

Internet Service Provider (ISP)

An Internet Service Provider (ISP) is a company which provides an access to the internet and other related services to the individuals and other companies.

Protocols

Protocols means the rules and conventions for communication between network services.

Domain Names

It is an identification string that are used to identify one or more IP addresses.

World Wide Web Consortium (W3C)

W3C which stands for World Wide Web Consortium defines as an international community where member organization work together to develop web standards.

Internet Society (ISOC)

Internet Society is a non-profit organization that involved with the internet engineering task force. It was formed in 1992 by Vint Cerf and Bob Khan which also can be knows as "Father of the Internet".

World Wide Web (WWW)

World Wide Web is a way to access information through the Internet media. It is an information sharing model built on the Internet. Web uses HTTP protocol, only one of the languages ​​used on the Internet, to transmit data. Web services, which use HTTP to allow applications to communicate to exchange business logic, use the Web to share information. The Web also uses browsers, such as Internet Explorer or Firefox, to access Web documents called web pages that are linked to one another via hyperlinks. Web documents also contain graphics, sound, text and video.

World Wide Web and internet in not synonym because WWW is a web where people always use it for researching and many more. So in order to use the World Wide Web, they need an internet to access to their personal device.