Chapter 2 The Internet & World Wide Web
1 OBJECTIVES OVERVIEW
Explain the purpose Identify and briefly Describe the types of of a Web browser and describe various Internet access identify the broadband Internet providers components of a Web connections address
Describe how to use a search engine to Describe the types of search for Web sites information on the Web
2 OBJECTIVES OVERVIEW
Recognize how Web pages use graphics, Identify the steps animation, audio, video, required for Web virtual reality, and plug- publishing ins
Explain how e-mail, mailing lists, instant messaging, chat rooms, Identify the rules of VoIP, FTP, and netiquette newsgroups and message boards work 3 THE INTERNET
The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals
4 THE INTERNET
The Internet originated as ARPANET in September 1969 and had two main goals:
Allow scientists at Function even if part different physical of the network were locations to share disabled or destroyed information and work by a disaster together
5 THE INTERNET
1986 NSF connects NSFnet to 1969 ARPANET and ARPANET becomes 1996 becomes known as the Internet2 is functional Internet founded
1984 1995 NSFNet Today More ARPANET has terminates its than 550 more than network on million hosts 1,000 the Internet connect to individual and resumes the Internet computers status as linked as research hosts network
6 THE INTERNET
Many home and small business users connect to the Internet via high-speed broadband Internet service
Fiber to Cable Cellular Satellite the Fixed Internet DSL Wi-Fi Radio Internet Premises wireless service Network Service (FTTP)
7 THE INTERNET
An access provider is a business that provides individuals and organizations access to the Internet free or for a fee
8 THE INTERNET
Wireless ISP (Internet Online service Internet service service provider) provider (OSP) provider (WISP)
Regional ISPs Provides wireless Has many provide Internet Internet access to members-only access to a specific computers and features geographical area mobile devices
Popular OSPs National ISPs include AOL provide Internet May require a (America Online) access in cities and wireless modem and MSN (Microsoft towns nationwide Network)
9 THE INTERNET
10 THE INTERNET
An IP address is a number that uniquely identifies each computer or device connected to the Internet A domain name is the text version of an IP address .Top-level domain (TLD)
11 THE INTERNET
12 THE WORLD WIDE WEB
The World Wide Web, or Web, consists of a worldwide collection of electronic documents (Web pages) A Web site is a collection of related Web pages and associated items A Web server is a computer that delivers requested Web pages to your computer Web 2.0 refers to Web sites that provide a means for users to interact
13 THE WORLD WIDE WEB
A Web browser, or browser, allows users to access Web pages and Web 2.0 programs
Internet Firefox Opera Explorer
Google Safari Chrome
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15 THE WORLD WIDE WEB
A home page is the first page that a Web site displays Web pages provide links to other related Web pages . Surfing the Web Downloading is the process of receiving information
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A Web page has a unique address called a URL or Web address
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Tabbed browsing allows you to open and view multiple Web pages in a single Web browser window
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Two types of search tools are search engines and subject directories
Search Subject engine directory
Finds Classifies Web information pages in an related to a organized set of specific topic categories
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20 THE WORLD WIDE WEB
A search engine is helpful in locating items such as:
Images Videos Audio News
People or Maps Blogs Businesses
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22 THE WORLD WIDE WEB
There are thirteen types of Web sites
Portal News Informational Business/Marketing
Blog Wiki Online Social Educational Network 23 THE WORLD WIDE WEB
Entertainment Advocacy Web Application
Content Personal Aggregator 24 THE WORLD WIDE WEB
Information presented on the Web must be evaluated for accuracy No one oversees the content of Web pages
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Multimedia refers to any application that combines text with:
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