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Data Processing (secondary)

The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link billions of devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail,telephony, and peer-to-peer networks for file sharing.

 

Web browser

web browser (commonly referred to as a browser) is a software application for retrieving, presenting, and traversing information resources on theWorld Wide Web. An information resource is identified by a Uniform Resource Identifier (URI/URL) and may be a web page, image, video or other piece of content.[1] Hyperlinks present in resources enable users easily to navigate their browsers to related resources.

Although browsers are primarily intended to use the World Wide Web, they can also be used to access information provided by web servers in private networks or files in file systems.

The major web browsers are Firefox, Internet Explorer/Microsoft Edge,[2][3][4] Google Chrome, Opera, and Safari.

  • Anchor

Synonymous with hyperlinks, anchor refers to non-linear links among documents. Or more simply put, it’s the word or phrase that can be clicked to connect to another page or resource.

  • ASCII

(pronounced “Ask-ee”) An acronym for American Standard Code for Information Exchange, ASCII is an international standard in which numbers, letters, punctuation marks, symbols and control codes are assigned numbers from 0 to 27. Easily transferred over networks, ASCII is a plain, unadorned text without style or font specifications.

  • Avatar

This term refers to an interactive representation of a human in a virtual reality environment.

  • Bandwidth

The range of transmission frequencies a network can use. The greater the bandwidth the more information that can be transferred over that network at one time.

  • Baseband

A transmission method in which a network uses its entire transmission range to send a single signal.

  • Broadband

A transmission method in which the networks range of transmission frequencies is divided into separate channels and each channel is used to send a different signal. Broadband is often used to send different types of signals simultaneously.

  • Browser

A type of software that allows you to navigate information databases.

  • Client

A computer that has access to services over a computer network. The computer providing the services is a server.

  • DNS

An acronym for Domain Name Server, DNS refers to a database of Internet names and addresses which translates the names to the official Internet Protocol numbers and vice versa.

  • Document

When used in reference to the World Wide Web, a document is any file containing text, media or hyperlinks that can be transferred from an HTTP server to a client program.

  • Document Window

This is the Mosaic program’s scrollable window in which HTML documents can be viewed.

  • Download

To transfer to your computer a copy of a file that resides on another computer.

  • FAQ

This is the acronym for Frequently Asked Questions. A common feature on the Internet, FAQs are files of answers to commonly asked questions.

  • Firewall

This term refers to security measures designed to protect a networked system from unauthorized or unwelcome access.

  • FTP

File Transfer Protocol is a protocol that allows the transfer of files from one computer to another. FTP is also the verb used to describe the act of transferring files from one computer to another.

  • Gopher

A menu-oriented tool used to locate online resources.

  • Gopherspace

A term used to describe the entire gopher network.

  • GUI

An acronym for Graphical User Interface, this term refers to a software front-end meant to provide an attractive and easy to use interface between a computer user and application.

  • Home Page

The document displayed when you first open Mosaic. Home Page also refers to the first document you come to at a Web site.

  • Hotlists

Lists of frequently used Web locations and URLs (Uniform Resource Locators).

  • Host

A computer acting as an information or communications server.

  • HTML

An acronym for HyperText Markup Language, HTML is the language used to tag various parts of a Web document so browsing software will know how to display that document’s links, text, graphics and attached media.

  • HTML Document

A document written in HyperText Markup Language.

  • HTTP

The abbreviation for Hypertext Transfer Protocol, HTTP is used to link and transfer hypertext documents.

  • Hypermedia

The hypertext concept extended to include linked multiple media.

  • Hypertext

This term describes the system that allows documents to be cross- linked in such a way that the reader can explore related documents by clicking on a highlighted word or symbol.

  • IP

The abbreviation for Internet Protocol, IP refers to the set of communication standards that control communications activity on the Internet. An IP address is the number assigned to any Internet-connected computer.

  • ISDN

The abbreviation for Integrated Services Digital Network, ISDN is a telecommunications standard that uses digital transmission technology to support voice, video and data communications applications over regular telephone lines.

  • JPEG

The acronym for Joint Photographic Experts Group, JPEG is an image compression format used to transfer color photographs and images over computer networks.

 Links

These are the hypertext connections between Web pages. This is a synonym for hotlinks or hyperlinks.

  • POP

An acronym for Point of Presence, POP is a service provider’s location for connecting to users.

  • Router

A communications device designed to transmit signals via the most efficient route possible.

  • Search Engine

This term refers to a program that helps users find information in text-oriented databases.

  • Server

A computer system that manages and delivers information for client computers.

  • TCP-IP

The basic protocols controlling applications on the Internet.

  • URL

This is the abbreviation for Uniform Resource Locator, The addressing system used in the World Wide Web and other Internet resources.

  • Web Browser

This is the software that allows a user to access and view HTML documents. Examples of Web browsers include Mosaic, Cello and Lynx.

  • Web Document

An HTML document that is browsable on the Web.

  • Web Page

An HTML document that is accessible on the Web.

 

Uses of the internet

Internet is today one of the most important part of our daily life. There are large numbers of things that can be done using the internet and so it is very important. The following are uses of the internet.

 

  1. Communication

At the moment the easiest thing that can be done using the internet is that we can communicate with the people living far away from us with extreme ease. Now people can not only chat but can also do the video conferencing. Email, social networking sites are some of the prime example of it.

 

  1. Research

Now the point that has been placed next is research. In order to do research you need to go through hundreds of books as well as the references and that was one of the most difficult jobs to do earlier. Since the internet came into life, everything is available just a click away. You just have to search for the concerned topic and you will get hundreds of references that may be beneficial for your research. And since internet is here to make your research public, you can then benefit a large amount of people from the research work that you have done. Research is one such thing which has got lots of benefit from this evolution of internet. Research process has now got wings and has gained the most due to the internet.

  1. Education

The next point that we have in this list is education. Yes you read it right. Education is one of the best things that the internet can provide. There are a number of books, reference books, online help centres, expert’s views and other study oriented material on the internet that can make the learning process very easier as well as a fun learning experience. There are lots and lots of websites which are related to different topic. You can visit them and can gain endless amount of knowledge that you wish to have. With the use of internet for education, you are non-longer dependent on some other person to come and teach you. There are various number of tutorials available over the internet using which you can learn so many thing very easily. There can’t be any excellent use of the internet other than education as it is the key to achieve everything in life.

  1. Financial Transaction

The next use mentioned here is financial transaction. Financial transaction is the term which is used when there is exchange of money. With the use of internet in the financial transaction, your work has become a lot easier. Now you don’t need to stand in the queue at the branch of your particular bank rather you can just log in on to the bank website with the credential that has been provided to you by the bank and then can do any transaction related to finance at your will. With the ability to do the financial transaction easily over the internet you can purchase or sell items so easily. Financial transaction can be considered as one of the best uses of resource in the right direction.

  1. Real Time Updates

Real time updates have been placed at the number fifth position here. This has been mentioned here in regards to the news and other happenings that may be on-going in different parts of the world but with the use of internet we come to know about it very easily and without any difficulty. There are various websites on the internet which provides you with the real time updates in every field be it in business, sports, finance, politics, entertainment and others. Many a time the decisions are taken on the real time updates that are happening in various parts of the world and this is where internet is very essential and helpful.

 

  1. Email:

By using internet now we can communicate in a fraction of seconds with a person who is sitting in the other part of the world. Today for better communication, we can avail the facilities of Email. We can chat for hours with our loved ones. There are plenty messenger services and email services offering this service for free. With help of such services, it has become very easy to establish a kind of global friendship where you can share your thoughts, can explore other cultures of different ethnicity.

 

  1. Information:

The biggest advantage that internet offering is information. The internet and the World Wide Web has made it easy for anyone to access information and it can be of any type, as the internet is flooded with information. The internet and the World Wide Web has made it easy for anyone to access information and it can be of any type. Any kind of information on any topic is available on the Internet.

  1. Business:

World trade has seen a big boom with the help of the internet, as it has become easier for buyers and sellers to communicate and also to advertise their sites. Now a day’s most of the people are using online classified sites to buy or sell or advertising their products or services. Classified sites save a lot of money and time so this is chosen as medium by most of people to advertise their products. We have many classified sites on the web like craigslist, Adsglobe.com, Kijiji etc.

  1. Social Networking:

Today social networking sites have become an important part of the online community. Almost all users are members use it for personal and business purposes. It’s an awesome place to network with many entrepreneurs who come here to begin building their own personal and business brand.

  1. Shopping:

In today’s busy life most of us are interested to shop online. Now a day’s almost anything can be bought with the use of the internet. In countries like US most of consumers prefer to shop from home. We have many shopping sites on internet like amazon.com, Dealsglobe.com etc. People also use the internet to auction goods. There are many auction sites online, where anything can be sold.

11 Entertainment: 

On internet we can find all forms of entertainment from watching films to playing games online. Almost anyone can find the right kind of entertainment for themselves. When people surf the Web, there are numerous things that can be found. Music, hobbies, news and more can be found and shared on the Internet. There are numerous games that may be downloaded from the Internet for free.

12 E-Commerce:

Ecommerce is the concept used for any type of commercial maneuvering, or business deals that involves the transfer of information across the globe via internet. It has become a phenomenon associated with any kind of shopping, almost anything. It has got a real amazing and range of products from household needs, technology to entertainment.

13 Services: 

Many services are now provided on the internet such as online banking, job seeking, purchasing tickets for your favorite movies, and guidance services on array of topics in the every aspect of life, and hotel reservations and bills paying. Often these services are not available off-line and can cost you more.

14  Job Search: 

Internet makes life easy for both employers and job seekers as there are plenty of job sites which connects employers and job seekers.

15  Connect: People are connecting with others though internet.

 

INTERNET SECURITY

Internet security is a branch of computer security specifically related to the Internet, often involving browser security but also network security on a more general level as it applies to other applications or operating systems on a whole. Its objective is to establish rules and measures to use against attacks over the Internet.[1] The Internet represents an insecure channel for exchanging information leading to a high risk of intrusion or fraud, such as phishing.[2] Different methods have been used to protect the transfer of data, including encryption and from-the-ground-up engineering.

See also

File Organization

RELATIONAL MODEL – Integrity Constraints

Relational database

Computer Professional Bodies

CAREER OPPORTUNITIES IN DATA PROCESSING

 

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