World Wide Web (WWW)

World Wide Web ( WWW)

The World Wide Web was developed in 1989 by Tim Berners-Lee of the European Particle Physics Lab (CERN) in Switzerland hypertext to facilitate communication among its members. who were located in several countries . World was soon spread beyond CERN. and a rapid growth in the number of both developers and users ensued.. The use of the Web has now reached global proportions.

Internet Protocols

Internet Protocol are the sets of rules that allow for intermachine communication on the Internet. 

E-mail: (Simple Mail Transport Protocol or SMTP)

• It distributes electronic messages and files to one or more electronic mailboxes

Telnet (Telnet Protocol)

• This protocol facilitates login to a computer host to execute commands

FTP(File Transfer Protocol)

• It transfer text or binary files between an FTP server and client

Usenet (Network News Transfer Protocol or NNTP)

• It distributes Usenet news articles derived from topical discussions on newsgroups

HTTP (Hypertext Transfer Protocol) 

• It transmits hypertext over networks. This is the protocol of the WWW.

 The Web gathers together these protocols into web's ability to work with multimedia and advance programming languages, the World Wide Web is the fastest-growing component of the Internet.

Wireless Internet

With your personal life becoming more dependent on electronic communication over the Internet, you might be ready to take the next step and get a device that allows you to access the Internet on the go. That's  where wireless Internet comes in. You've probably seen news or advertising about cell phones that let you receive and send e-mail. Will you still be able to surfthe web?. The expanding network of digital cellular and personal communication service (PCS) has created a solid foundation for wireless Internet services 

•  Short Massage Service (SMS)
• High-Speed- Circuit-Switched Data (CDS)
• Genral Packet Radio Service (GPRS)
• Unstructured Supplementary Services Data (USSD)

Wireless Internet needs WAP because of the following reasons

• Transfer speed
• Size and readability
• Navigation
• Accessing a web site using a WAP-enabled device has been taking place in the following way.
• The device send out a ratio signal, searching for service.
• you select a Web site that you wish to view..
• The gateway server encode the HTTP data as WML (Wireless Mark up Language)
• The WML encoded data is sent to your device.

You dovelop wireless Internet content a Web site creates special text-only or low-graphics version of the site. The data are sent HTTP form by a Web server to a WAP gateway this system includes the WAP encoder, script compiler and protocol adapters to convert the HTTP information to WML. The gateway then sends the converted data to the WAP client on your wireless device.