Internet
- 1. INTERNET
- 2. CONTENTS Introduction Origins &Early Development. Working of ISP. Protocol stacks & packets Where to begin Internet Addresses Getting Connected to INTERNET Networking Infrastructure What is Domain Name? What is Internet Explorer? Why do we use Internet? Surfing The Net Advantages of using the internet Internet access gap in Education
- 3. Origins &Early Development Cold War origins- Advanced Research ProjectAgency(ARPA). ARPANET-share computer power &ideas.(1969-70s). 1980s:Internet growth- Rise of PCs;Rise of e-mail(1989:159K users, Exponential demand &growth in Internet use.
- 4. Terminal Terminal Terminal PC Hub Switch Branch Office Mobile Users Router ISP Line PC PC Terminal server Printer Web Server R E T H E R N E T leased NET Unix System Dial-Up PC INTERNET Corporate LAN ISDN Connection Dial-up
- 5. Protocol Stacks & packets Hardware Layer Network Layer Transport layer(TCP,IP) Application Protocol Layer(FTP,SMTP) Protocol Layers
- 6. Where to begin Internet Addresses Because the Internet is the global network of computers. Each computer connected to the Internet must have a unique address(IP address) INTERNET Your computer1.2.3.4 Another computer 5.6.7.8
- 7. Getting Connected to INTERNET We need a with ,a Connection from an INTERNET SERVICE PROVIDER(ISP). PC Modem Telephone It is an organization which provides Internet Connectivity For a charge MTNL VSNL DISHNET Satyam Online
- 9. Domain Name Genric Domain Country Domain Name Inverse Domain Name .com .edu .mil .gov .org .net AU CA DE US IN JP ARPA In-addr 132 34 41 121 121.45.34.132 Root Level In.addr.arpa
- 10. What is Internet Explorer? Internet Explorer is a Web browser from Microsoft that enables you to – Access the Wealth of Information&Network applications on corporate Internet. You can easily access information from variety of sources, from the latest websites to legacy corporate database.
- 12. Why do we use internet Sharing information on any topic E-mail and chatting. ENTERTAINMENT-for listening Music, Jokes etc… Education-For remote learning. In buisness-Eg Advertising & Selling products.
- 14. Surfing the Net or Internet simply means viewing multiple Web sites either by typing in a URL or clicking on hyperlinks. Downloading - means to transfer a file to your computer from elsewhere . Uploading - means to transfer a file from your computer .
- 15. Advantages Of Using The Internet Global Audience Relatively Inexpensive Operates 24hours,aday& a week. Provide Technical Support Create Online Discussion Forums
- 16. 73.1 34.3 28.5 24.3 19 13.8 10.8 8.4
- 17. Bibliography www.google.com Book PC Software-B.C.A 1 ST year Sir.Jitender Gehlot Presented by-:Pooja Goswami B.C.A 1 st Year
- 18. Thank you for listening today, I hope you found it useful and interesting.
Editor's Notes
- #6: your computer is connected to the Internet and has a unique address. How does it 'talk' to other computers connected to the Internet? An example should serve here: Let's say your IP address is 1.2.3.4 and you want to send a message to the computer 5.6.7.8. The message you want to send is "Hello computer 5.6.7.8!". Obviously, the message must be transmitted over whatever kind of wire connects your computer to the Internet. Let's say you've dialed into your ISP from home and the message must be transmitted over the phone line. Therefore the message must be translated from alphabetic text into electronic signals, transmitted over the Internet, then translated back into alphabetic text. How is this accomplished? Through the use of a protocol stack . Application Protocols Layer Protocols specific to applications such as WWW, e-mail, FTP, etc Transmission Control Protocol Layer TCP directs packets to a specific application on a computer using a port number .Internet Protocol Layer IP directs packets to a specific computer using an IP address.Hardware LayerConverts binary packet data to network signals and back. (E.g. ethernet network card, modem for phone lines, etc.)
- #9: The ISP maintains a pool of modems for their dial-in customers. This is managed by some form of computer (usually a dedicated one) which controls data flow from the modem pool to a backbone or dedicated line router. This setup may be referred to as a port server, as it 'serves' access to the network
- #11: A web browser is an interface between you and the internet.Most browsers have a graphical user interface(GUI).they allow customers a means to connect to a location on the internet either by typing in the desired address or by clicking on hyperlinks to reach a site. There are many kinds of browsers available, Netscape Navigator, Internet Explorer.