The internet is a network of computers linking many different types of computers all over the world. It is a network of networks sharing a common mechanism for addressing computers, and a common set of communication protocols for communications between two computers on the network.
There are four types of services provided by the Internet to its users:
- Electronic Mail
- File Transfer Protocol
- The World Wide Web
- [#1] – Introduction to Computer Fundamentals
- [#2] – Basic computer organization
- [#3] – Number systems
- [#4] – Computer Codes
- [#5] – Computer Arithmetic
- [#6] – Processor and Memory
- [#7] – Secondary Storage Devices
- [#8] – Input-Output Devices
- [#9] – Computer software
- [#10] – Planning the Computer Program
- [#11] – Computer Languages
- [#12] – System Implementation and Operation
- [#13] – Operating Systems
- [#14] – Application Software packages
- [#15] – Business Data Processing
- [#16] – Data Communications and Computer Networks
- [#17] – The Internet
- [#18] – Multimedia
- [#19] – Classification of Computers
- [#20] – Introduction to C Programming Language
Points To Remember:
- The Internet is a network of computer linking many different types of computers all over the world. It is a network of networks sharing a common mechanism for addressing (identifying) computers, and a common set of communication protocols for communications between two computers on the network.
- Four basic services provided by the Internet to its users are electronic mail, file transfer protocol, telnet, and usenet news.
- Electronic mail service (known as e-mail in short) enables an internet user to send a mail (message) to another Internet user in any part of the world in near-real-time manner.
- File Transfer Protocol service (known as FTP in short) enables an Internet user to move a file from one computer to another on the Internet.
- Telnet service enables an Internet user to log in to another computer on the Internet form his/her local computer.
- Usenet service enables a group of Internet users to exchange their views/ideas/information on some common topic of interest with all members belonging to the group.
- The WWW uses a concept called hypertext. Hypertext documents on the Internet are known as Web Pages. Web Pages are created by using a special language called Hyper Text Markup Language (HTML) that is a powerful language for linking documents for easier electronic access and manipulation.
- To be used as a web client, a computer needs to be loaded with a special software tool that is known as browser. Browsers normally provide several navigation facilities to help users save time while Internet surfing.
- The Internet has already proved to be a valuable tool for use in many significant ways. Some current strategic uses of the Internet are for on-line communication, software sharing, exchange of views on topics of common interest, posting of information of general interest, product promotion, feedback about products, customer support service, on-line journals and magazines, on-line shopping, and worldwide video conferencing.
List of Questions:
- What is the internet? How did it evolve?
- List three main characteristic features of the Internet that define it.
- Name some basic services provided by the Internet. Explain how each of these services helps the Internet users.
- In what manner is e-mail service similar to postal mail service? In what manner the two are different from each other?
- List some advantages and disadvantages of e-mail service against fax service.
- List some advantages and disadvantages of e-mail service against telephone service.
- What is an electronic mail(e-mail)? Why it is preferred by many to paper mail, telephone, and fax services?
- What is file transfer protocol (FTP)? List the steps involved in downloading/uploading a file by using FTP service.
- Explain how it is ensured that only authorized users can access resources of a remote computer in case of FTP and Telnet services.
- Differentiate between “downloading” and “uploading” of information.
- List some common uses of telnet service offered by the Internet.
- What is an anonymous FTP site? Why it is used?
- What is a newsgroup? How it is useful?
- Differentiate between moderated and non moderated newsgroups.
- What is hypertext? How it is useful?
- Define following terms with respect to the Internet:
- What is WWW browser? What types of navigation facilities are typically supported by modern browsers to help users save time while Internet surfing?
- Describe some general uses of the Internet.
- Describe some uses of the Internet in education sector.
- Describe some uses of the Internet in commercial organizations.
- Write short notes on:
File Transfer Protocol
The World Wide Web
Uses of the Internet
- Give full form of: