the internet and world wide web by: shilpa phanse 10/8/2008
TRANSCRIPT
The Internet and World The Internet and World Wide WebWide Web
By: Shilpa Phanse10/8/2008
The InternetThe InternetWorldwide collection of networksGoal was to:
◦Be able to share information◦Function at different locations
Host or Server◦A computer◦Provides services and connections
Connectivity of InternetConnectivity of InternetDial up access (telephone lines)DSL (digital subscriber line) (telephone
lines)A cable (cable television) Fiber to the premises (FTTP) (fiber
optics)Wi-Fi (Wireless fidelity) radio signal
transmission◦Hot Spot
Wireless modem (cellular network)Satellite (satellite dish communications)
Access ProvidersAccess ProvidersInternet Service provider (ISP)
◦AT&T, EarthLinkOnline Service Providers (OSP)
◦ Internet and other services◦News, weather, game software use, photo
sharing, IM’s, online calendars◦AOL and MSN
Wireless Internet Service Provider (WISP)◦Wireless Internet Access to PDAs, smart
phones
InternetInternetAddress
◦IP Address 123.123.12.12◦Domain name www.google.com
Electronic document◦World Wide Web (Service on
internet)◦Web page◦Web site: Collection of web
documents◦Web Server
WebWebBrowsing the web
◦Web Browser (IE, Firefox)◦Home Page◦URL (Uniform Resource Locator) or Web
Address◦Protocol, domain, file◦HTTP (Hypertext Transfer Protocol)◦Navigation
Hyperlink or link Tabbed browsing Search Engines Subject Directories
Types of Web SitesTypes of Web SitesPortalNews InformationalBusiness/MarketingEducationalEntertainmentAdvocacyBlogWiki (allows editing, collaborative)Media Sharing websiteContent Aggregator (RSS feed)Personal
Web PublishingWeb PublishingPlan a web siteAnalyze and design a web siteCreate a web siteDeploy a web siteMaintain a web site
The World Wide WebThe World Wide WebWhat is a thumbnail?
p. 64 Next
Small version of a larger graphic image—used to improve Web page display time Usually click
on thumbnail to display larger image
The World Wide WebThe World Wide WebWhat is animation?
p. 64 Next
Appearance of motion created bydisplaying a series of still imagesin sequence
The World Wide WebThe World Wide WebWhat is audio?
p. 64 - 65 Fig. 2-14 Next
Music, speech, or any other sound Individual compressed sound files
that you download from the Web to your computer
Once downloaded, you can play (listen to) the contents of the files
A podcast is recorded audio, usually an MP3 file, stored on a Web site that can be downloaded to a computer or a portable media player
The World Wide WebThe World Wide WebWhat is streaming audio?
p. 64 Next
Transfers data in a continuous and even flow Enables you to listen to the sound as it downloads to
your computer
The World Wide WebThe World Wide WebWhat is video?
p. 65 Next
Consists of full-motion images, most with sound,played back at various speeds
MPEG (Moving Pictures Experts Group) is popular video compressionstandard
The World Wide WebThe World Wide WebWhat is virtual reality (VR)?
p. 65 Next
Use of computers to simulate a real or imagined environment
Appears as a three dimensional (3-D) space Used for games and many
practical applications
The World Wide WebThe World Wide WebWhat are plug-ins?
p. 66 Fig. 2-15 Next
Programs that extend the capability of a browser
You can download many plug-ins at nocost from variousWeb sites
Web PublishingWeb PublishingWhat is Web publishing?
p. 66 - 67 Fig. 2-16 Next
Development and maintenance of Web pages
Business to business (B2B)Business providing goods and
services to other businesses
Consumer to consumer (C2C)One consumer sells directly to another
E-CommerceE-CommerceWhat is E-Commerce?
p. 67 - 68 Fig. 2-17 Next
Business to consumer (B2C)Sale of goods to general public
Short for electronic commerce Business transaction that occurs
over the Internet
Other Internet ServicesOther Internet ServicesWhat is e-mail?
p. 69 - 70 Next
Short for electronic mail The transmission of messages and files via a computer
network Messages can consist of simple text or can contain attachments,
such as documents, graphics, audio, or video clips Internet access providers usually provide an e-mail program
Other Internet ServicesOther Internet ServicesHow do you send an e-mail message?
p. 69 Fig. 2-18 Next
Other Internet ServicesOther Internet ServicesWhat is an e-mail address?
p. 70 Fig. 2-19 Next
Name that consists of a user name and domain name that identifies the user
Other Internet ServicesOther Internet ServicesHow does an e-mail message travel?
p. 70 Fig. 2-20 Next
Step 4.When recipient uses e-mail software to check for e-mail messages, the message transfers from incoming mail server to recipient’s computer
Step 2.Your software contacts software on your service provider’s outgoing mail server
Step 3.Software on outgoing mail server determines best route for data and sends message, which travels along Internet routers to recipient’s incoming mail server
Step 1.Using e-mail software, you create and send a message
Other Internet ServicesOther Internet ServicesWhat is a mailing list?
p. 71 Next
Group of e-mail names and addresses given a single name
When a message is sent to the mailing list, everyone on the list receives the message
To add your name to a mailing list you must subscribe to it; to remove your name you must unsubscribe
Click to view Web Link,click Chapter 2, Click Web Linkfrom left navigation, then click Mailing Listsbelow Chapter 2
Other Internet ServicesOther Internet ServicesWhat is instant messaging (IM)?
p. 71 Fig. 2-21 Next
A real-time Internet communications service that notifies you when one or more people are online and allows you to exchange messages or files
Other Internet ServicesOther Internet ServicesWhat is a chat?
p. 71 - 72 Fig. 2-22 Next
Real-time typed conversation that takes place on a computer
Chat room is a location on an Internet server that permits users to discuss topics of interest
Click to view Web Link,click Chapter 2, Click Web Linkfrom left navigation, then click Chat Roomsbelow Chapter 2
Other Internet ServicesOther Internet Services
What is VoIP? Enables users to speak to other users over the Internet using their computer
Nextp. 72 Fig. 2-23
Other Internet ServicesOther Internet ServicesWhat is FTP?
p. 72 Next
File Transfer Protocol—Internet standard that permits you to upload and download files with other computers on the Internet
Other Internet ServicesOther Internet ServicesWhat are newsgroups and message boards?
p. 73 Fig. 2-24 Next
Newsgroup
Many Web sites use message boards because they are easier to use
Online area where users discuss a particular subject
Message board Type of discussion group
NetiquetteNetiquetteWhat is netiquette?
p. 73 Fig. 2-25 Next
Golden Rule: Treat others as you would like them to treat you.
Code of acceptable behaviors users should follow while on the Internet