© Paradigm Publishing Inc. 7-1 Chapter 7 The Internet and the World Wide Web

© Paradigm Publishing Inc. 7-2 Presentation Overview The Internet: A Global Network Connecting to the Internet Navigating the Internet Viewing Web Pages Searching for Information on the Internet Using Newer Internet Applications Respecting the Internet Community

© Paradigm Publishing Inc. 7-3 The Internet: A Global Network How does the Internet create a global community?

© Paradigm Publishing Inc. 7-4 The Internet: A Global Network How does the Internet create a global community? Internet can be used for – communications

© Paradigm Publishing Inc. 7-5 The Internet: A Global Network How does the Internet create a global community? Internet can be used for – communications – entertainment

© Paradigm Publishing Inc. 7-6 The Internet: A Global Network How does the Internet create a global community? Internet can be used for – communications – entertainment – e-commerce

© Paradigm Publishing Inc. 7-7 The Internet: A Global Network How does the Internet create a global community? Internet can be used for – communications – entertainment – e-commerce – research

© Paradigm Publishing Inc. 7-8 The Internet: A Global Network How does the Internet create a global community? Internet can be used for – communications – entertainment – e-commerce – research – distance learning

© Paradigm Publishing Inc. 7-9 The Internet: A Global Network Electronic Mail allows users to create, send, receive, save, and forward messages in electronic form.

© Paradigm Publishing Inc The Internet: A Global Network Communications

© Paradigm Publishing Inc The Internet: A Global Network Communications –Chat rooms – allow users to engage in real-time dialogue

© Paradigm Publishing Inc The Internet: A Global Network Communications –Chat rooms – allow users to engage in real-time dialogue –Instant messaging – allows conversations between two people to take place in real time

© Paradigm Publishing Inc The Internet: A Global Network Communications –Chat rooms – allow users to engage in real-time dialogue –Instant messaging – allows conversations between two people to take place in real time –Blogs – frequently updated journals contain entries of personal thoughts and Web links

© Paradigm Publishing Inc The Internet: A Global Network Communications –Chat rooms – allow users to engage in real-time dialogue –Instant messaging – allows conversations between two people to take place in real time –Blogs – frequently updated journals contain entries of personal thoughts and Web links –Mailing lists – lists of addresses of people interested in a topic

© Paradigm Publishing Inc The Internet: A Global Network Communications

© Paradigm Publishing Inc The Internet: A Global Network Communications –Message boards – lists of messages that anyone with access to the board can read

© Paradigm Publishing Inc The Internet: A Global Network Communications –Message boards – lists of messages that anyone with access to the board can read –Newsgroups – collections of posted articles organized by subject

© Paradigm Publishing Inc The Internet: A Global Network Communications –Message boards – lists of messages that anyone with access to the board can read –Newsgroups – collections of posted articles organized by subject –Telecommuting – workers can work at home using a computer, modem, and telephone line

© Paradigm Publishing Inc The Internet: A Global Network Communications –Message boards – lists of messages that anyone with access to the board can read –Newsgroups – collections of posted articles organized by subject –Telecommuting – workers can work at home using a computer, modem, and telephone line –File Transfer Protocol – allows users to transfer files to and from remote computer systems

© Paradigm Publishing Inc The Internet: A Global Network Comparison of , cell phone, and IM usage in the United States

© Paradigm Publishing Inc The Internet: A Global Network Entertainment

© Paradigm Publishing Inc The Internet: A Global Network Entertainment –Online games – many free games are available online

© Paradigm Publishing Inc The Internet: A Global Network Entertainment –Online games – many free games are available online –Online gambling – users can gamble in virtual casinos online

© Paradigm Publishing Inc The Internet: A Global Network Entertainment –Online games – many free games are available online –Online gambling – users can gamble in virtual casinos online –Music – users can download and play music on computers

© Paradigm Publishing Inc The Internet: A Global Network Entertainment –Online games – many free games are available online –Online gambling – users can gamble in virtual casinos online –Music – users can download and play music on computers –Videos – television shows, music videos, and movies can be downloaded and viewed on computers

© Paradigm Publishing Inc The Internet: A Global Network Electronic commerce allows users to exchange business information, products, services, and payments online Retail Sales: Total and Online in 2005

© Paradigm Publishing Inc The Internet: A Global Network Research allows access to books, periodicals, photos, videos, and sound files from around the world to be read online or downloaded for later use

© Paradigm Publishing Inc The Internet: A Global Network Distance Learning allows electronic transfer of information and course materials between learning institutions and students

© Paradigm Publishing Inc Connecting to the Internet What resources are needed to connect to the Internet?

© Paradigm Publishing Inc Connecting to the Internet What resources are needed to connect to the Internet? – computer, personal digital assistant (PDA), or smartphone

© Paradigm Publishing Inc Connecting to the Internet What resources are needed to connect to the Internet? – computer, personal digital assistant (PDA), or smartphone – network card or modem

© Paradigm Publishing Inc Connecting to the Internet What resources are needed to connect to the Internet? – computer, personal digital assistant (PDA), or smartphone – network card or modem – network, telephone line, or cable connection

© Paradigm Publishing Inc Connecting to the Internet What resources are needed to connect to the Internet? – computer, personal digital assistant (PDA), or smartphone – network card or modem – network, telephone line, or cable connection – account with an Internet service provider (ISP) or value added network (VAN)

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections –Dial-up access allows access over a standard telephone line.

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections –Dial-up access allows access over a standard telephone line. –Local area network (LAN) connection provides a direct wire at speeds 20 times faster than dial up.

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections –Dial-up access allows access over a standard telephone line. –Local area network (LAN) connection provides a direct wire at speeds 20 times faster than dial up. –Cable modem allows simultaneous television viewing and Internet usage.

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections –Dial-up access allows access over a standard telephone line. –Local area network (LAN) connection provides a direct wire at speeds 20 times faster than dial up. –Cable modem allows simultaneous television viewing and Internet usage. –Digital subscriber line (DSL) allows simultaneous telephone and Internet usage.

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections –Wireless allows radio-wave connections to the Internet in public places.

© Paradigm Publishing Inc Connecting to the Internet Types of Internet Connections –Wireless allows radio-wave connections to the Internet in public places. –Satellite requires a satellite dish and a modem for Internet connection.

© Paradigm Publishing Inc Connecting to the Internet Comparison of Internet connection speeds

© Paradigm Publishing Inc Navigating the Internet What capabilities do Web browsers offer?

© Paradigm Publishing Inc Navigating the Internet What capabilities do Web browsers offer? –automatic identification and connection to a local port providing Internet connection

© Paradigm Publishing Inc Navigating the Internet What capabilities do Web browsers offer? –automatic identification and connection to a local port providing Internet connection –POP3 mail service for reading and sending

© Paradigm Publishing Inc Navigating the Internet What capabilities do Web browsers offer? –automatic identification and connection to a local port providing Internet connection –POP3 mail service for reading and sending –HTML code viewing

© Paradigm Publishing Inc Navigating the Internet What capabilities do Web browsers offer? –automatic identification and connection to a local port providing Internet connection –POP3 mail service for reading and sending –HTML code viewing –Java applet support

© Paradigm Publishing Inc Navigating the Internet What capabilities do Web browsers offer? –automatic identification and connection to a local port providing Internet connection –POP3 mail service for reading and sending –HTML code viewing –Java applet support –easy-to-use interfaces that allow for control commands

© Paradigm Publishing Inc Navigating the Internet Internet Protocol Addresses four-group series of numbers separated by periods that allow browsers to locate material on the Internet

© Paradigm Publishing Inc Navigating the Internet Universal Resource Locators (URL) pathname describing where information can be found on Internet communication protocol is first part (HTTP) format information follows protocol (WWW) domain name identifies organization domain suffix identifies type of organization

© Paradigm Publishing Inc Navigating the Internet Common domain suffixes used in URLs

© Paradigm Publishing Inc Navigating the Internet Country name abbreviations in URLs

© Paradigm Publishing Inc Navigating the Internet The Path of a URL URL directs routers and servers to display a specific Web page

© Paradigm Publishing Inc Navigating the Internet Packets software breaks each file into packets and sends them over separate routes

© Paradigm Publishing Inc Viewing Web Pages –Web page – single document viewable on the World Wide Web

© Paradigm Publishing Inc Viewing Web Pages –Web page – single document viewable on the World Wide Web –Web site – includes all Web pages making up site

© Paradigm Publishing Inc Viewing Web Pages –Web page – single document viewable on the World Wide Web –Web site – includes all Web pages making up site –Home page – overview of information and features contained within a Web site

© Paradigm Publishing Inc Viewing Web Pages –Web page – single document viewable on the World Wide Web –Web site – includes all Web pages making up site –Home page – overview of information and features contained within a Web site –Portal – site that acts as gateway to access a variety of information

© Paradigm Publishing Inc Viewing Web Pages Hypertext Markup Language (HTML) set of specifications describing characteristics of elements that appear on a Web page

© Paradigm Publishing Inc Viewing Web Pages Extensible Markup Language (XML)

© Paradigm Publishing Inc Viewing Web Pages Extensible Markup Language (XML) –organizes and standardizes data so computers can communicate with each other

© Paradigm Publishing Inc Viewing Web Pages Extensible Markup Language (XML) –organizes and standardizes data so computers can communicate with each other –allows developers to design their own languages that work with limitless types of documents and file formats

© Paradigm Publishing Inc Viewing Web Pages Audio, Video, and Animation Elements

© Paradigm Publishing Inc Viewing Web Pages Audio, Video, and Animation Elements –Java applets provide the ability to program online games and highly interactive interfaces.

© Paradigm Publishing Inc Viewing Web Pages Audio, Video, and Animation Elements –Java applets provide the ability to program online games and highly interactive interfaces. –Cookies store preference information, such as user ID and passwords.

© Paradigm Publishing Inc Viewing Web Pages Audio, Video, and Animation Elements –Java applets provide the ability to program online games and highly interactive interfaces. –Cookies store preference information, such as user ID and passwords. –Plug-ins extend the capabilities of Web browsers by improving graphic, sound, and video elements.

© Paradigm Publishing Inc Viewing Web Pages Ways Companies Advertise on the Internet

© Paradigm Publishing Inc Viewing Web Pages Ways Companies Advertise on the Internet –Banner – graphic that invites viewers to click it to be directed to a Web site

© Paradigm Publishing Inc Viewing Web Pages Ways Companies Advertise on the Internet –Banner – graphic that invites viewers to click it to be directed to a Web site –Pop-Up window – banner that “pops” unexpectedly onto the screen

© Paradigm Publishing Inc Viewing Web Pages Ways Companies Advertise on the Internet –Banner – graphic that invites viewers to click it to be directed to a Web site –Pop-Up window – banner that “pops” unexpectedly onto the screen –Blind link – link with misleading information that actually directs viewers to an advertising Web page

© Paradigm Publishing Inc Viewing Web Pages Ways Companies Advertise on the Internet –Banner – graphic that invites viewers to click it to be directed to a Web site –Pop-Up window – banner that “pops” unexpectedly onto the screen –Blind link – link with misleading information that actually directs viewers to an advertising Web page –Hi-jacker – causes your efforts to reach a certain page to be redirected to another page

© Paradigm Publishing Inc Viewing Web Pages Webrings link sites devoted to a similar theme or topic, forming a ring

© Paradigm Publishing Inc Searching for Information on the Internet Users can search for and retrieve information from Web pages by using a search engine.

© Paradigm Publishing Inc Searching for Information on the Internet Differences between search engines are related to:

© Paradigm Publishing Inc Searching for Information on the Internet Differences between search engines are related to: –number of Web pages the engine catalogs

© Paradigm Publishing Inc Searching for Information on the Internet Differences between search engines are related to: –number of Web pages the engine catalogs –search methodology used

© Paradigm Publishing Inc Searching for Information on the Internet Differences between search engines are related to: –number of Web pages the engine catalogs –search methodology used –number of search tools available to refine searches

© Paradigm Publishing Inc Searching for Information on the Internet Differences between search engines are related to: –number of Web pages the engine catalogs –search methodology used –number of search tools available to refine searches –whether the engine accepts fees from Web site owners to place their names at the top of search results list

© Paradigm Publishing Inc Searching for Information on the Internet Search Techniques

© Paradigm Publishing Inc Searching for Information on the Internet Search Techniques –Keywords are search terms that allow a search engine search for specific information

© Paradigm Publishing Inc Searching for Information on the Internet Search Techniques –Keywords are search terms that allow a search engine to search for specific information –Search operators link keywords with terms such as: –AND (combines keywords) –OR (returns references with any of the keywords) –NOT (excludes a keyword)

© Paradigm Publishing Inc Using Newer Internet Applications Peer-to-Peer (P2P) File Sharing allows people to download material directly from other users’ hard drives

© Paradigm Publishing Inc Using Newer Internet Applications Internet Telephony

© Paradigm Publishing Inc Using Newer Internet Applications Internet Telephony –allows two or more people with good connections to use the Internet to make telephone-style calls around the world

© Paradigm Publishing Inc Using Newer Internet Applications Internet Telephony –allows two or more people with good connections to use the Internet to make telephone-style calls around the world –digitizes voices and breaks them down into packets to send anywhere

© Paradigm Publishing Inc Using Newer Internet Applications Internet Telephony –allows two or more people with good connections to use the Internet to make telephone-style calls around the world –digitizes voices and breaks them down into packets to send anywhere –can be sent computer to computer, to Internet- ready phones, and to analog telephone adapters

© Paradigm Publishing Inc Using Newer Internet Applications Streaming Audio and Video

© Paradigm Publishing Inc Using Newer Internet Applications Streaming Audio and Video –Streaming (webcasting) sends a continuous stream of data to a computer where it is immediately played as audio or video

© Paradigm Publishing Inc Using Newer Internet Applications Streaming Audio and Video –Streaming (webcasting) sends a continuous stream of data to a computer where it is immediately played as audio or video –Protects copyrighted material because a complete copy is not downloaded and cannot be copied and shared

© Paradigm Publishing Inc Using Newer Internet Applications Webcams tiny cameras allow live video transmission over the Web Audio Mail allows people to transmit messages by voice

© Paradigm Publishing Inc Respecting the Internet Community What are safeguards for good Internet behavior?

© Paradigm Publishing Inc Respecting the Internet Community What are safeguards for good Internet behavior? – Netiquette – guidelines for good behavior

© Paradigm Publishing Inc Respecting the Internet Community What are safeguards for good Internet behavior? – Netiquette – guidelines for good behavior – Moderated environments – a moderator can filter messages and ban people from a chat room

© Paradigm Publishing Inc Respecting the Internet Community What are safeguards for good Internet behavior? – Netiquette – guidelines for good behavior – Moderated environments – a moderator can filter messages and ban people from a chat room – Net neutrality – states that all net traffic shall be treated with equal priority

© Paradigm Publishing Inc Respecting the Internet Community What are safeguards for good Internet behavior? – Netiquette – guidelines for good behavior – Moderated environments – a moderator can filter messages and ban people from a chat room – Net neutrality – states that all net traffic shall be treated with equal priority – Digital Millennium Copyright Act of 1998 – protects copyrighted material

© Paradigm Publishing Inc Respecting the Internet Community Core rules of netiquette

© Paradigm Publishing Inc Respecting the Internet Community What are some points to remember when sending messages?

© Paradigm Publishing Inc Respecting the Internet Community What are some points to remember when sending messages? – Once sent, they cannot be retrieved.

© Paradigm Publishing Inc Respecting the Internet Community What are some points to remember when sending messages? – Once sent, they cannot be retrieved. – A permanent copy of the remains somewhere on the Internet.

© Paradigm Publishing Inc Respecting the Internet Community What are some points to remember when sending messages? – Once sent, they cannot be retrieved. – A permanent copy of the remains somewhere on the Internet. – is easily forwarded or copied.

© Paradigm Publishing Inc Respecting the Internet Community Digital Millennium Copyright Act of 1998

© Paradigm Publishing Inc Respecting the Internet Community Digital Millennium Copyright Act of 1998 – prohibits people from defeating software encryption programs and other safeguards placed on copyrighted material

© Paradigm Publishing Inc Respecting the Internet Community Digital Millennium Copyright Act of 1998 – prohibits people from defeating software encryption programs and other safeguards placed on copyrighted material – makes the use and distribution of security- cracking codes illegal

© Paradigm Publishing Inc On the Horizon Based on the information presented in this chapter and your own experience, what do you think is on the horizon?