How internet operate (P1)

What is The Internet and how does it operate?

Internet is computer network that connects together globally providing variety of information, in which any computer can communicate with any other computer as long as they are both connected to the Internet.

Internet is a global network of computers and each computer that are connected to the Internet must have a unique address that is known as IP address. They are in the form nnn.nnn.nnn.nnn where nnn must be a number from 0 – 255. For example, when you want to send email, each stack layer that the message passes through may break the message up into smaller chunks of data known as packets. These packets travel through a cable called a router then the router send the packets along to their destination. When there is no congestion, the packets move to their destination place without difficulty and delay. When there are too many packets moving through a junction, random packets drop and caused delay for few seconds for it to arrives.

What is World Wide Web

World Wide Web is an information system on the internet that uses the HTTP protocol enabling the user to search any information by moving one document to the other. It also utilizes The Web also utilizes applications called browsers that make it easy to access the World Wide Web browsers such as Opera Mini, Internet Explorer, Fire Fox to web documents that are linked to each other via hyperlinks. There are more than 1,275,000,000 Websites.

Types of connection

• ·         Wireless

 Wireless or Wi-Fi uses radio frequency to connect to the internet instead of using telephone lines and cables. Speeds will vary, and the range is between 5 Mbps to 20 Mbps.

• ·         Cellular

Cellular technology provides internet access to mobile phone and the speeds also vary depending on the provider such as 3G and 4G speeds. 3G speeds are only around 2.0 Mbps while 4G is around 21 Mbps currently.

• ·         Satellite

Satellite connection has a slower speed than a broadband however, it is stable. It provides an uninterrupted connection but due to its very far distance from the users, it transmits data slower than normal.