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INTERNET AND ITS FEATURES

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INTERNET



The Internet links are computer networks all over the world so that users can share resources and communicate with each other. Some computers, have direct access to all the facilities on the Internet such as the universities. And other computers, eg privately-owned ones, have indirect links through a commercial service provider, who offers some or all of the Internet facilities. In order to be connected to Internet, you must go through service suppliers. Many options are offered with monthly rates. Depending on the option chosen, access time may

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Mr. RAM KUMAR GUPTA..........................................................................................................................................................................................................................................................................................................................................................................................Mr. VINOD KUMAR DUBEY

Features Of Internet

ELECTRONIC COMMUNICATION

The most common type of electronic communication is electronic mail or email and is the most frequently used function of the Internet. Email can be used for one-to-one communication, as well as one-to-many communication, in the form of electronic conferencing.


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FILE TRANSFER PROTOCOL (FTP)


o transfer large files efficiently from one computer to another through the Internet, FTP was developed. Specific software, usually incorporated into your Web browser, is needed to transfer files and this is what allows you to download software or pictures from the Internet.


TELNET


When you use telnet, you are using software that allows you to log into another computer and run programs on that computer. This is significantly different from gathering information from the computer.


WORLD WIDE WEB (WWW)



People frequently use the term "Internet" or "the Net" and "the World Wide Web" synonymously. However, they are not the same. The WWW, or Web, is one part or function of the Internet. It is a server application that can be accessed with software called an Internet browser.


What Do I Need To Connect to The Inetrnet

    1. Modem

The modem is a device that converts digital information to analog by MODulating it on the sending end and DEModulating the analog information into digital information at the receiving end. Modems are known as Data Circuit-Terminating Equipment(DCE) while the computer using the modem is often referred to as Data Terminal Equipment(DTE). Modems have different transmission modes as follows: Simplex - Simplex means that signals can be passed in one direction only which means that communication only happens in one direction. Half Duplex - Half duplex means that signals can be passed in either direction, but not in both simultaneously. Half-duplex modems can work in full-duplex mode. Full Duplex - Full duplex means that signals can be passed in either direction, simultaneously

    1. Computer

Computers are machines that perform tasks or calculations according to a set of instructions, or programs. The first fully electronic computers, introduced in the 1940s, were huge machines that required teams of people to operate.

Computers work through an interaction of hardware and software. Hardware refers to the parts of a computer that you can see and touch, including the case and everything inside it

Software refers to the instructions, or programs, that tell the hardware what to do. A word processing program that you can use to write letters on your computer is a type of software.

    1. Internet connection

Other Important Feature Of Internet

What Is LAN ?

A LAN is a local area network. A netwok is a group of computers connected together by some type of broadband cable.The network is contained within a single building of even to a single floor.

What Is WAN ?

A WAN is a wide area network. It is group of computers connected through bridges,routers,hubs and repeaters. Since it is called a wide area network,the network may extend across buildings on a campus.

What Is domain name ?

  • Just like people,domains need to have names.A domain name on the internet as the following forms

· [subdomain].[subdomain].[subdomain].[...].domain

· For example my electronic mail address includes my name and my domain name.

· pierobon@pierobon.org



What Is TCP/IP ?

TCP/IP is an abbreviation for Transmission Control Protocol/Internet Protocol.

Internet Protocol (IP) uses addresses which are a series of four "octet" (byte) numbers in a dotted decimal notation. For example: 199.246.24.130

IP addresses are of three classes:

· Class A

· Class B

· Class C

ABSTRACT

Background: Prior studies have shown that many patients are interested in Internet-based technology that enables them to control their own care. As a result, innovative eHealth services are evolving rapidly, including self-assessment tools and secure patient-caregiver email communication. It is interesting to explore how these technologies can be used for supporting self-care.

Objective: The aim of this study was to determine user-centered criteria for successful application of Internet-based technology used in primary care for supporting self-care.

Methods: We conducted scenario-based tests combined with in-depth interviews among 14 caregivers and 14 patients/consumers to describe the use of various self-care applications and the accompanying user problems. We focused on the user-friendliness of the applications, the quality of care provided by the applications, and the implementation of the applications in practice

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Mr.R.P. RICHHARIYA




                                                                                                                  Ram kumar Gupta Vinod kumar dubey R.Richhariya 



Points added for a correct answer:  
Points for a wrong answer:
Ignore the questions' coefficients:

1. What is the full form of LAN ?

Local Area Name
Local Area Network
Local area News

2. What is the full form of WAN  ?

Wide Area Network
Web Area Network
Web Area News

3. The full form of TCP/IP is Transmission control protocol/Internet Protocol.

true
false

4. What is the Full Form of FTP ?

File Telling Protocol
File Transfer Protocol
File Transmission Protocol

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