Pertemuan11 Understanding the Internet and World Wide Web
Transcript of Pertemuan11 Understanding the Internet and World Wide Web
Pertemuan 11Understanding the Internet and
World Wide Web
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Learning Outcomes
Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu :• menunjukkan contoh pemanfaatan
Internet dan world wide web
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Outline Materi
• History of the Internet• How Internet Works• The World Wide Web• Other Internet Services
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The Internet• What are some services found on the
Internet?
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4. Chat
(4)
(1)
1. E-mail
(2)
2. Web
(3)
3. File transfer
(5)
5. Message board
(6)
6. Instant messaging
History of the Internet
• How did the Internet originate?
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Goal:To function if
part of network were disabled
Became functional
September 1969
ARPANETNetworking project by Pentagon’s Advanced
Research Projects Agency (ARPA)Goal:
To allow scientists at different
locations to share information
History of the Internet
• How has the Internet grown?
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Today (2004/2005)More than 150 million host nodes
1984More than 1,000 host nodes
1969Four host nodes
History of the Internet
• Who controls the Internet?
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World Wide Web Consortium (W3C)
§ Oversees research, sets standards and guidelines
§ Tim Berners-Lee, director
Internet2 (I2)§ Internet-related research and
development project
§ Develops and tests advanced Internet technologies
Ø No onec—cit is a public, cooperative, andindependent network
Ø Several organizations set standards
How the Internet Works
• How can you connect to the Internet?
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High-speed connectionHigh-speed connection
Slow-speed technologySlow-speed technology
Dial-up accessmodem in your computer uses a
standard telephone line to connect to the Internet
Dial-up accessmodem in your computer uses a
standard telephone line to connect to the Internet
Digital subscriber line (DSL),cable telephone Internet
services (CATV), cable modem provide connections using
regular copper telephone lines
Digital subscriber line (DSL),cable telephone Internet
services (CATV), cable modem provide connections using
regular copper telephone lines
Connection is always on—whenever the computer
is running
Connection is always on—whenever the computer
is running
Connection must be established each time you log on.Slow but inexpensive
Connection must be established each time you log on.Slow but inexpensive
How the Internet Works• What are ways to access the Internet?
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1. ISP, Regional or National
2. Wireless Internet Service Provider
How the Internet Works
• What is a domain name?
10p. 74 Figs. 2-4 – 2-5 Next
Ø Text version of Internet protocol (IP) address§ Number that uniquely identifies
each computer or device connected to Internet
Indonesia Facts
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www.apjii.or.id(asosiasi penyelenggara jasa internet indonesia)
www.cctld.or.id
(country-code top level domain Indonesia à .id)co.id, or.id, ac.id, sch.id, go.id, mil.id, web.id
The World Wide Web
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• What is the World Wide Web (WWW)?
A worldwide collection of electronic documents
Each electronic document is called a Web page
Also called the Web
Can contain text, graphics, sound, video, and built-in connections
A Web site is a collection of related Web pages
The World Wide Web
• What is a Web browser?
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MicrosoftInternetExplorer
Netscape
Mozilla
Ø Program that allows you to view Web pages
Opera
The World Wide Web
• What is a home page?
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Ø The first page that a Web site presents Ø Often provides connections to other Web pages
The World Wide Web
• What is a hyperlink (link)?
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§ Item found elsewhere on same Web page§ Different Web page at same Web site§ Web page at a different Web site
Ø Built-in connection to another related Web page location
• What is a URL?
Unique address for a Web page
A web server delivers the Web page to your computer
The World Wide Web
• What is a search engine?
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Ø Program used to find Web sites and Web pages by entering words or phrases called search text§ Also called a keyword
The World Wide Web
• What are the eight basic types of Web sites?
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Ø PortalØ NewsØ InformationalØ Business/marketingØ EducationalØ EntertainmentØ AdvocacyØ Personal
The World Wide Web
• What is a portal?
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Ø A Web site that offers a variety of services from one, convenient location, usually for free§ Searching, sports, e-mail,
news, weather, auctions, Web communities(Web sites that join people with similar interests)
The World Wide Web
• What is a news Web site?
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Ø Contains newsworthy materialØ Stories and articles relating to current events, life,
money, sports, and weather
www.detikinet.com
The World Wide Web
• What is an informational Web site?
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Ø Contains factual informationØ Created by organizations and government agencies
www.ictwatch.com
The World Wide Web
• What is a business/marketing Web site?
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Ø Contains content that promotes productsØ Allows you to purchase products or services online
www.bhinneka.com
The World Wide Web
• What is an educational Web site?
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Ø Offers avenues for formal and informal teachingand learning
www.ilmukomputer.com
The World Wide Web
• What is an entertainment Web site?
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Ø Offers an interactive environment featuring music, video, sports, games, and more
The World Wide Web
• What is an advocacy Web site?
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Ø Contains content that describes a cause, opinion,or idea
www.antikorupsi.org
The World Wide Web
• What is a personal Web site?
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Ø Web page maintained by private individualØ Reasons: sharing life experience with the world
or job hunting
The World Wide Web
• What is multimedia?
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Ø Application integrating text with other media elements§ Graphics§ Animation§ Audio§ Video§ Virtual reality
The World Wide Web
• What is audio?
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Ø Music, speech, or any other soundØ Individual compressed sound files
that you download from the Web to your computer§ Common Web audio file formats are
MP3, WAV, WMA (Windows Media Audio), MPEG, RealAudio, and QuickTime
Ø Once downloaded, you can play (listen to) the contents of the files
The World Wide Web
• What is streaming audio?
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Ø Transfers data in a continuous and even flow
Ø Enables you to listen to the sound as it downloads to your computer
Ø Radio stations use streaming audio to broadcast over the Web
The World Wide Web
• What is video?
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Ø Consists of full-motion images with soundplayed back at various speeds
Ø MPEG (Moving Pictures Experts Group)is popular video compressionstandard
Electronic Commerce
• What is e-commerce?
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Business to business (B2B)Business providing goods and
services to other businesses
Consumer to consumer (C2C)One consumer sells directly to another
Business to consumer (B2C)Sale of goods to general public
Ø Short for electronic commerceØ Business transaction that occurs over
the Internet
Other Internet Services
• What is e-mail?
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Ø Short for electronic mailØ The transmission of messages and files via a computer
network§ Messages can consist of simple text or can contain attachments,
such as documents, graphics, or audio/video clips§ Internet access providers usually provide an e-mail program§ Some Web sites—such as MSN Hotmail and Yahoo!—provide
free e-mail servicesØ One of the original services on the Internet
Other Internet Services
• What is an e-mail address?
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Ø Unique name that consists of a user name and domain name that identifies the user
user namedomain name
Other Internet Services
• What are message boards?
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§ Many Web sites use message boards because they are easier to use
Ø Message board§ Type of discussion group
Other Internet Services
• What is a mailing list?
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Ø Group of e-mail addresses given a single name
Ø When a message is sent to the mailing list, everyone on the list receives the message
Ø To add your name to a mailing list you must subscribe to it; to remove your name you must unsubscribe
Other Internet Services
• What is a chat?
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Ø Real-time typed conversation that takes place on a computer
Ø Chat room is location on server that permits users to discuss topics of interest
Instant Messaging
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Instant messagingis the act of instantly communicating to two or more people over a network such as the Internet using a client program.
Friendster
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Friendster is an Internet social network service. Every user creates an online identity by filling out a questionaire profile and uploading a user picture, and then defines a gallery of friends, and the service then integrates these galleries, allowing a user to search through a list of their friends, their friends' friends, and so on.
Blog
• A weblog (usually shortened to blog, but occasionally spelled web log) is a web-based publication consisting primarily of periodic articles (normally in reverse chronological order).
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Wikipedia
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Wikipedia is a Web-based, multi-language, free-content encyclopediawritten collaboratively by volunteers and sponsored by the non-profit Wikimedia Foundation. It has editions in roughly 200 different languages. Its purpose is to create and distribute a free international encyclopedia in as many languages as possible.
• Source : Shelly, Gary B. Discovering Computers (2004/2005/2006). Thomson Course Technology. PPT for Chapter 2.
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