Ch12 the internert & mm
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The document discusses the history and development of the Internet, including its origins with ARPANET in 1969 and commercialization in 1992. It describes key Internet concepts like internetworking, IP addresses, data packets, and bandwidth bottlenecks. It also covers important Internet technologies and services, such as the World Wide Web, HTML, multimedia, search engines, web browsers, web servers, and plugins that enable file types like images, sound, and video on the Internet.
![References
24 April
2015
The Internet And Multimedia26
[Tay_Vaughan] Multimedia Making Its Work Eight
Edition](https://image.slidesharecdn.com/ch12theinternertmm-150424132822-conversion-gate01/85/Ch12-the-internert-mm-26-320.jpg)
Ch12 the internert & mm
- 1. Chapter No:12 The Internet And Multimedia Presented On:24 April 2015 Presented By:12bs(cs)02 12bs(cs)03
- 2. Agenda Origin Of Internet Internetworking Internet Addresses IP Addresses and Data Packets Connections Bandwidth bottleneck Internet Services MIME Type The World Wide Web and HTML Multimedia on the web Tools for the World Wide Web 24 April 2015 2 The Internet And Multimedia
- 3. Origin Of Internet The Internet was created by the Advanced Research Projects Agency (ARPA) of the U.S. Defense Department, when the first node of the ARPANET was installed at the University of California at Los Angeles in September 1969. By the mid-1970s, the ARPANET “inter-network” embraced more than 30 universities, military sites, and government contractors, and its user base expanded to include the larger computer science research community Commercial use of the Internet began in 1992 24 April 2015 3 The Internet And Multimedia
- 4. Internetworking A computer network is a set of different computers connected together using networking devices such as switches and hubs. To enable communication, each individual network node or segment is configured with similar protocol or communication logic, which usually is TCP/IP. When a network communicates with another network having the same or compatible communication procedures, it is known as Internetworking 24 April 2015 4 The Internet And Multimedia
- 5. Example : Internetworking 24 April 2015 5 The Internet And Multimedia
- 6. Internet Addresses An Internet address is a series of unique numbers that identifies a computer connected to the Internet. Every computer that gets online has an Internet address Also known as IP and URL Alternate Spellings: internet address Examples: "This website's Internet address is 168.119.955.2” There are two major types of addresses on the Internet. One is a person's e-mail address, and the other is a Web site address, which is known as a URL 24 April 2015 6 The Internet And Multimedia
- 7. IP Addresses And Data Packets When a stream of data is sent over the Internet by your computer, it is first broken down into packets by the Transmission Control Protocol (TCP). Each packet includes the address of the receiving computer, a sequence number (“this is packet #5”), error correction information, and a small piece of your data. After a packet is created by TCP, the Internet Protocol (IP) then takes over and actually sends the packet to its destination along a route that may include many other computers acting as forwarders. TCP/IP is two important Internet protocols working in concert 24 April 2015 7 The Internet And Multimedia
- 8. Connections To connect to the Internet, a computer or network needs A data connection to a server Wireless or land line Usually need an account with the server TCP/IP software Internet software includes e-mail programs, Web browsers, FTP software etc 24 April 2015 8 The Internet And Multimedia
- 9. Bandwidth bottleneck Bandwidth is a measure of how much data, expressed in bit per second (bps), you can send from one computer to another in a given amount of time Users with slow connections will have a difficult time using multimedia over the Internet 24 April 2015 9 The Internet And Multimedia
- 10. Example : Bandwidth bottleneck 24 April 2015 10 The Internet And Multimedia
- 11. Bandwidth bottleneck To accommodate low-bandwidth users Compress data when possible Take advantage of the browser’s cache Design for download efficiency don’t use greater color depth than what is absolutely necessary or leave extra space around the edges Design alternate sites for low- and high-bandwidth users Consider using streaming technology 24 April 2015 11 The Internet And Multimedia
- 12. Internet Services The Internet means the World Wide Web. But the Web is only the latest and most popular of services available today on the Internet. E-mail; file transfer; discussion groups and newsgroups; real-time chatting by text, voice, and video; and the ability to log into remote computers are common as well In the case of the Internet, daemons support protocols such as Hypertext Transfer Protocol (HTTP) for the World Wide Web Post Office Protocol (POP) for e-mail File Transfer Protocol (FTP) for exchanging files Uniform Resource Locator (URL)—for example, http://www .timestream.com/index.html 24 April 2015 12 The Internet And Multimedia
- 13. MIME Type MIME stands for Multi-purpose Internet Mail Extensions. MIME types form a standard way of classifying file types on the Internet. Internet programs such as Web servers and browsers all have a list of MIME types, so that they can transfer files of the same type in the same way, no matter what operating system they are working in A MIME type has two parts: a type and a subtype. They are separated by a slash (/). For example, the MIME type for Microsoft Word files is application and the subtype is msword. Together, the complete MIME type is application/msword 24 April 2015 13 The Internet And Multimedia
- 14. Example: MIME Type 24 April 2015 14 The Internet And Multimedia
- 15. The World Wide Web and HTML The World Wide Web started in 1989 at the European Particle Physics Laboratory (CERN) as a “distributed collaborative hypermedia information system” This new Hypertext Transfer Protocol (HTTP) provided rules for a simple transaction between two computers on the Internet consisting of (1)establishing a connection (2) requesting that a document be sent (3)sending the document (4) closing the connection It also required a simple document format called Hypertext Markup Language (HTML) for presenting structured text mixed 24 April 2015 15 The Internet And Multimedia
- 16. Multimedia On The Web Everyone wants a web site that is as active and dynamic as television or a CD-ROM program that plays in your computer. Buttons should visually and audibly click; visitors should be greeted with music; dazzling images should appear and disappear on the screen There are four major ways of adding animation to a web page: server push, Shockwave, Java and GIF animation 24 April 2015 16 The Internet And Multimedia
- 17. Tools for the World Wide Web Web Server The functioning of the Web involves communication between a server computer and a client computer A Web server is a computer that delivers a file when a client computer sends a request Web servers vary in strength and capacity for a variety of platforms meeting the HTTP requirements 24 April 2015 17 The Internet And Multimedia
- 18. Web Browsers Web browsers are applications that run on the client side (user’s PC) on the Internet They provide an interactive graphical interface This interface is used for searching, finding, and viewing text documents, sounds, and multimedia resources on the Web Web browsers differ in features, performance, and cost Internet Explorer, Google Chrome, and Mozilla Firefox are example of Web browsers 24 April 2015 18 The Internet And Multimedia
- 19. Search Engines Search engines are programs that search documents for specified keywords and returns a list of the documents where the keywords were found. A search engine is really a general class of programs, however, the term is often used to specifically describe systems like Google, Bing and Yahoo! Search that enable users to search for documents on the World Wide Web 24 April 2015 19 The Internet And Multimedia
- 20. Web Page Makers and Site Builders To deliver multimedia on the Web, you should know some HTML HTML documents are simple ASCII text files without any formatting Professional web page developers often use word processor to edit their pages HTML editors and web page-making applications offer to shortcut HTML learning curves and working effort Active Server Pages, ColdFusion, or PHP are the programming environments needed for building dynamic sites 24 April 2015 20 The Internet And Multimedia
- 21. Web Page Makers And Site Builders HTML translators export a word-processed document with its text styles and layout converted into HTML tags Many HTML editors and Web page-making applications offer to shortcut HTML learning curves and working effort Dedicated editors are usually WYSIWYG (What You See Is What You Get) word processors Microsoft FrontPage provides WYSIWYG support for many of the latest HTML formatting extensions It also provides extensive Web site management support through its FrontPage extensions 24 April 2015 21 The Internet And Multimedia
- 22. Plug-ins And Delivery Plug-ins allow end users to view and interact with new types of documents and images Helper applications (or players) display or run files downloaded from the Internet Common media types such as text, image, sound, animation, and video use plug-ins to help them display the additional content on the Web Text Text and document plug-ins overcome the display limitations of HTML and Web browsers Adobe Acrobat provides special fonts and graphic images embedded as data into the file 24 April 2015 22 The Internet And Multimedia
- 23. Plug-ins And Delivery Images Most browsers read only bitmapped JPEG, GIF, and PNG image files Plug-ins that enable the viewing of vector formats (such as Flash) are useful Vector graphics are device-independent. An image is displayed at the correct size and with colors supported by the computer 24 April 2015 23 The Internet And Multimedia
- 24. Plug-ins And Delivery Sound Digitized sound files in MP3, WAV, AIF, or AU formats may be sent and played on a user’s computer from Internet MIDI sound files are more compact, but they depend upon the computer’s MIDI setup for quality 24 April 2015 24 The Internet And Multimedia
- 25. Plug-ins And Delivery Animation and Video The most data-intense multimedia elements are video streams containing images and synchronized sound Video streams are commonly packaged as Apple’s QuickTime, Microsoft’s Video for Windows (AVI), and as MPEG files The trade-off between bandwidth and quality is ever present when designing, developing, and delivering 24 April 2015 25 The Internet And Multimedia
- 26. References 24 April 2015 The Internet And Multimedia26 [Tay_Vaughan] Multimedia Making Its Work Eight Edition
- 27. 24 April 2015 The Internet And Multimedia27 THANK YOU
Editor's Notes
- #4: began as a research network funded By 1983, the network still consisted of merely several hundred computers on only a few local area networks.
- #6: The most notable example of internetworking is the Internet, a network of networks based on many underlying hardware technologies, but unified by an internetworking protocol standard, the Internet Protocol Suite, often also referred to as TCP/IP.
- #7: An Internet address can also be defined as the name, or unique address on the Web, of every Web site. An Internet address is the same thing as a URL, or Uniform Resource Locator.
- #16: It was designed by Tim Berners-Lee as a protocol for linking a multiplicity of documents located on computers anywhere within the Internet.