copyright©2008 n.aljaffan®ksu1 the internet & world wide web discovering computers...

Copyright©2008 N.AlJaffan®KSU 1

The Internet & World Wide Web

Discovering Computers Fundamentals,

Third Edition , Shelly Cashman Vermaat

Chap

ter 2

Resources



Explain how to access to the Internet. Explain how to view pages & search on the web. Describe the types of Web sites.

Objectives

Chap

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The Internet – also called the Net

The goal was to build a network:The goal was to build a network:

Allowed scientists at different Allowed scientists at different locations to share info. & work together locations to share info. & work together on military & scientific projects.on military & scientific projects.

Could function even if part of the Could function even if part of the network were disabled or destroyed by network were disabled or destroyed by disaster. disaster.

The Internet & World Wide WebChap

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In1969, The In1969, The ARPANETARPANET Advanced Research Advanced Research Projects Agency NetworkProjects Agency Network developed by developed by DARPADARPA Defense Advanced Research Projects Defense Advanced Research Projects AgencyAgency of the United States Department of of the United States Department of Defense .Defense .

The ARPANET was the first wide area The ARPANET was the first wide area network.network. It has evolved into the Internet we know It has evolved into the Internet we know today.today.


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The original network consisted of four main The original network consisted of four main computers, one each located atcomputers, one each located at

The University of California at Los The University of California at Los Angeles.Angeles. The University of California at Santa The University of California at Santa Barbara.Barbara. The Stanford Research Institute.The Stanford Research Institute. The University of Utah.The University of Utah.

Each computer served as a host on the Each computer served as a host on the network.network.


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Host or ServerHost or Server is any computer that is any computer that provides services & connections to provides services & connections to other other computers on a network.computers on a network.

• Each organization on the Internet is Each organization on the Internet is responsible only for maintaining its own responsible only for maintaining its own network.network.• No one controls or owns the Internet.No one controls or owns the Internet.• The World Wide Web Consortium The World Wide Web Consortium W3C,W3C, oversees research & sets standards oversees research & sets standards & & guidelines for many areas of the Internet.guidelines for many areas of the Internet.


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How The Internet worksHow The Internet works

Connecting to the InternetConnecting to the Internet

Dial-Up Access Dial-Up Access It is a form of Internet access via It is a form of Internet access via

telephone linetelephone line .We uses a We uses a modemmodem connected to a connected to a

computer and a telephone line. computer and a telephone line. Slow-Speed technology - Max 56 Kbps.Slow-Speed technology - Max 56 Kbps...


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DSL ( digital subscriber line)DSL ( digital subscriber line)It is a technology that provides high-Speed It is a technology that provides high-Speed

Internet connections Internet connections using regular using regular telephone linestelephone lines.

MIN 125 Kbps to Max 25.000 Kbps.MIN 125 Kbps to Max 25.000 Kbps.

Cable ModemCable Modem It is a technology that It is a technology that provides high-Speed Internet provides high-Speed Internet connections through the cable TV networkconnections through the cable TV network.


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Fixed Wireless Fixed Wireless high-Speed Internet high-Speed Internet connections .connections .

Use a dish-shaped antenna on your house Use a dish-shaped antenna on your house or business to or business to communicate with a communicate with a

tower location via radio signals.tower location via radio signals.

Satellite Modem Satellite Modem high-Speed Internet high-Speed Internet connections communicate withconnections communicate with

satellite dish.satellite dish.

In most cases, In most cases, DSL, cable TV, fixed wireless & DSL, cable TV, fixed wireless & satellite connectionssatellite connections are always are always on on , that is, , that is,

connected to Net the entire time the computer connected to Net the entire time the computer is running. With Dial-up access You must is running. With Dial-up access You must establish the connection to the Internet.establish the connection to the Internet.


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Access ProvidersAccess Providers• Access ProvidersAccess Providers is a company that supplies is a company that supplies

individuals and businesses with access to the individuals and businesses with access to the Internet free or for a fee.Internet free or for a fee.

• There are three types of it :There are three types of it :– Internet Service Provider (Internet Service Provider (ISPISP), sometimes ), sometimes

called an Internet Access Providercalled an Internet Access Provider– Online Service ProviderOnline Service Provider (OSP).– Wireless InternetWireless Internet Service ProviderService Provider (WISP)


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Internet Service Provider (ISP)Internet Service Provider (ISP)

Is a regional or national access provider.Is a regional or national access provider.

Regional ISP provide internet access to Regional ISP provide internet access to specific geographic area.specific geographic area.

National ISP provide internet access to in National ISP provide internet access to in cities & towns nationwide.cities & towns nationwide.

National ISPs offer more services & have large National ISPs offer more services & have large technical support staff.technical support staff.

e.g. AT&T WorldNet Service & e.g. AT&T WorldNet Service & EarthLink.EarthLink.


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Online Service ProviderOnline Service Provider (OSP) in in addition to providing Internet access, it has addition to providing Internet access, it has many member-only features.many member-only features.

these features include special content these features include special content and services such as news, weather, and services such as news, weather, financial data, games, travel guides, and financial data, games, travel guides, and photo communication . photo communication .

The fees for using an OSP higher than ISP The fees for using an OSP higher than ISP fees.fees.2 more popular OSP are AOL & MSN2 more popular OSP are AOL & MSN


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Wireless InternetWireless Internet Service ProviderService Provider (WISP) is a company that provides wireless Internet access to users with wireless modems or Internet-enabled devices and mobile computers

e.g. Mobily & MTC.


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How data travel the InternetHow data travel the Internet computers connected to the internet work computers connected to the internet work together to transferee data and information together to transferee data and information around the world.around the world.

Several main transmission media carry the Several main transmission media carry the heaviest amount of traffic on the internet.heaviest amount of traffic on the internet.

The major carriers of network traffic are The major carriers of network traffic are known collectively as the known collectively as the internet backbone.internet backbone.


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How The Internet works How The Internet works

Internet AddressesInternet Addresses

The Internet relies on an addressing system The Internet relies on an addressing system much like the postal service to send data to a much like the postal service to send data to a computer at a specific destination.computer at a specific destination.

IP AddressIP Address short for Internet Protocol short for Internet Protocol address.address.• is a number that uniquely identifies each is a number that uniquely identifies each

computer or device connected to the computer or device connected to the Internet.Internet.


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IP address consist of 4 groups of number each IP address consist of 4 groups of number each separated by a period.separated by a period.

e.g.e.g. 216.239.39.99 216.239.39.99o The first portion identifies the network .The first portion identifies the network .o The last portion identifies the specific computer.The last portion identifies the specific computer.

These numeric IP addresses are difficult to These numeric IP addresses are difficult to remember and use. Thus, the Internet supports the remember and use. Thus, the Internet supports the use of a text name that represents one or more IP use of a text name that represents one or more IP addresses.addresses.

Domain NameDomain Name is the text version of an IP address. is the text version of an IP address. o Represents one or more IP addresses.Represents one or more IP addresses.o e.g. www.google.come.g. www.google.com


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www.google.comwww.google.com

Top-level domain used by a particular class of Top-level domain used by a particular class of organizationorganization .

it identifies the type of organization it identifies the type of organization associated with the domain.associated with the domain.

for example, .com for commercial for example, .com for commercial organizationsorganizations . .

The TOP-LEVEL domain also end with a tow letter The TOP-LEVEL domain also end with a tow letter represent country code, such as fr for France.represent country code, such as fr for France.

Internet server or IAP translate domain name Internet server or IAP translate domain name into its associated IP address.into its associated IP address.


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Top level domain


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The World Wide Web (WWW) or The World Wide Web (WWW) or WebWeb

A widely used service on the Internet, A widely used service on the Internet, consists of a worldwide collection of consists of a worldwide collection of electronic documents.electronic documents.

Each electronic document on the web, Each electronic document on the web, called called Web pageWeb page, can contain text, graphics, , can contain text, graphics, audio & video.audio & video.

Web pages usually have built-in connections Web pages usually have built-in connections to other documents, to other documents, linkslinks..


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Web SiteWeb Site is a collection of related Web pages & is a collection of related Web pages & associated items, such as documents and pictures, associated items, such as documents and pictures, stored on web server.stored on web server.

Web serverWeb server is a computer that delivers requested is a computer that delivers requested Web pages to your computer.Web pages to your computer.

Web browserWeb browser is application software that allows is application software that allows users to access & view Web page.users to access & view Web page.

More widely web browsers are Internet Explorer, More widely web browsers are Internet Explorer, Netscape & Opera.Netscape & Opera.

Home pageHome page , is the first page that web site displays. , is the first page that web site displays.


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DownloadingDownloading is a process of a computer is a process of a computer receiving information from a server on the receiving information from a server on the Internet.Internet.

Web page download can take from a few second Web page download can take from a few second to several minutes depending on the speed of to several minutes depending on the speed of your connection & amount of graphics involved.your connection & amount of graphics involved.

each Web page has a unique address called a each Web page has a unique address called a URL.URL.


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URLURL Uniform Resource Locator or Web Uniform Resource Locator or Web address. address.

e.g. e.g. http://www.weather.com.

Web browser retrieves a web page using its Web browser retrieves a web page using its Web address URL.Web address URL.

A web address consists of protocol, domain A web address consists of protocol, domain name and sometimes the path to a specific name and sometimes the path to a specific web page or location on the web page.web page or location on the web page.

Many Web page address begin with http:// Many Web page address begin with http:// ( Hypertext Transfer Protocol)( Hypertext Transfer Protocol)

http : It is a set of rules that defines how http : It is a set of rules that defines how pages transfer on the Internet.pages transfer on the Internet.


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http://www.weather.com/



• The first portion of the domain name identifies the type of the internet server. ex: www indicates a web server.

• When you enter the Web address, http://www.weather.com/maps/activity/skinprotection/index_large.html

In the web browser, it sends a request to the Web server that contains the weather.com Web site. The server then retrieve the web page named index_large.html in the maps/activity/skinprotection/ path and delivers it to your browser, which then displays the web page on the screen.

Chap

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http://www.weather.com/maps/activity/skinprotection/index_large.html




Navigating Web PagesNavigating Web Pages

Most web pages contain links, short for hyperlink, is Most web pages contain links, short for hyperlink, is a built-in connection to another related Web page a built-in connection to another related Web page or part of a Web page .or part of a Web page .

Links allow you to obtain information in a nonlinear Links allow you to obtain information in a nonlinear way.way.

Surfing the web, refer to the activity of using links Surfing the web, refer to the activity of using links to explore the web.to explore the web.

Links can be text or an image.Links can be text or an image.

Text links may be underlined and/or displayed in a Text links may be underlined and/or displayed in a color different from other text on the web page.color different from other text on the web page.


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Searching for Information on the WebSearching for Information on the WebOne primary use of the Web is to search for One primary use of the Web is to search for

information. The steps in successful searching information. The steps in successful searching are:are:

Identify the main idea or concept in the Identify the main idea or concept in the topic about which you are seeking topic about which you are seeking information.information.

Determine any synonyms, alternate Determine any synonyms, alternate spellings or variant word forms for the spellings or variant word forms for the topic.topic.

Use search tool to locate the information.Use search tool to locate the information.


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2 most commonly used search tools 2 most commonly used search tools areare

Subject directorySubject directory classifies web classifies web pages in an organized set of pages in an organized set of categories. Such as sports or categories. Such as sports or shopping. It provides categorized shopping. It provides categorized lists of links arranged by subject.lists of links arranged by subject.

e.g yahoo, msn.e.g yahoo, msn.

Search engineSearch engine is a program that is a program that finds Web site & web page. finds Web site & web page.

e.g yahoo, msn, Google.e.g yahoo, msn, Google.


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Techniques to improve your searching:Techniques to improve your searching:

– Use specific nouns & put the most important Use specific nouns & put the most important terms first in the search text.terms first in the search text.

– Use the asterisk (*) to substitute characters in Use the asterisk (*) to substitute characters in word. e.g. retriev* returns retrieves, retrieval, word. e.g. retriev* returns retrieves, retrieval, retriever and any other variation.retriever and any other variation.

– Use quotation mark “ ” to create phrases.Use quotation mark “ ” to create phrases.

– List all possible spellings.List all possible spellings.

– Read search engine’s help information.Read search engine’s help information.

– Try more than one search engineTry more than one search engine


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Type of web sitesType of web sites

• PortalPortal• NewsNews• InformationalInformational• Business and Business and

marketingmarketing• EducationalEducational

• EntertainmentEntertainment• AdvocacyAdvocacy• BlogBlog• WikiWiki• Content Content

aggregatoraggregator• personalpersonal


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Many Web sites fall into more than one of these categories


• Portal Portal is a website that offers a variety of is a website that offers a variety of Internet services from a single, convenient Internet services from a single, convenient location.location.

• Most portals offer the following free Most portals offer the following free services: search engine and\or subject services: search engine and\or subject directory, news, sports and weather, e-mail, directory, news, sports and weather, e-mail, shopping , maps, and stock quotes.shopping , maps, and stock quotes.

• When you connect to the Internet , the first When you connect to the Internet , the first web page that is displayed web page that is displayed oftenoften is a portal. is a portal.

e.g. yahoo, msn, Lycos and AltaVista.e.g. yahoo, msn, Lycos and AltaVista.


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• News News is a website contains is a website contains newsworthy material including newsworthy material including stories & articles relating to current stories & articles relating to current events, life, money, sports & the events, life, money, sports & the weather.weather.

• Newspaper & TV & radio stations Newspaper & TV & radio stations are some of the media that are some of the media that maintain news websites.maintain news websites.


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InformationalInformational contains factual information. contains factual information.

Such asSuch as– census datacensus data– tax codestax codes– the congressional budget.the congressional budget.

Other organizations provide info. Such as Other organizations provide info. Such as public transportation schedules & public transportation schedules & published research findingspublished research findings


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Business & marketingBusiness & marketing contains content that promotes or sell contains content that promotes or sell products or services.products or services.

EducationalEducational offers exciting, challenging avenues for offers exciting, challenging avenues for formal & informal teaching & learning.formal & informal teaching & learning.– Provide online classes & degrees.Provide online classes & degrees.– Instructors often use the web to enhance Instructors often use the web to enhance

classroom teaching.classroom teaching.


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AdvocacyAdvocacy used to promote an opinion used to promote an opinion or or idea.idea.

BlogBlog short forshort for Weblog Weblog

– an informal website consisting of time-an informal website consisting of time-stamped articles, or posts, in a diary or stamped articles, or posts, in a diary or journal formatjournal format

– usually listed in reverse chronological order.usually listed in reverse chronological order.

– Reflecting the interests, opinions & Reflecting the interests, opinions & personalities of the author & sometimes site personalities of the author & sometimes site visitors.visitors.


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WikiWiki

is a collaborative website that is a collaborative website that allows users to add to, modify, or allows users to add to, modify, or delete the website content via their delete the website content via their web browser.web browser.

Its open to modification by Its open to modification by general public.general public.Eg. Wikipedia.Eg. Wikipedia.


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Content AggregatorContent Aggregator is a business that gathers & organizes is a business that gathers & organizes web content & then distributes ,feeds, web content & then distributes ,feeds, the content to subscribers for free or a the content to subscribers for free or a fee.fee.

– RSSRSS (Really Simple Syndication) is a (Really Simple Syndication) is a specification that content aggregators specification that content aggregators use to distribute content to subscribersuse to distribute content to subscribers

– RSS files are one of the most widely RSS files are one of the most widely used XML formats on the Web.used XML formats on the Web.


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PersonalPersonal

private individual or family not private individual or family not usually associated with any usually associated with any organization may maintain organization may maintain personal web site.personal web site.

EntertainmentEntertainmentOffer an interactive and engaging Offer an interactive and engaging

environment .environment .


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Evaluating a web siteEvaluating a web site

The quality of that information can be evaluated The quality of that information can be evaluated based on simple criteria.based on simple criteria.

AffiliationAffiliation reputable institution should support reputable institution should support the website without the website without bias in the info.bias in the info.

AudienceAudience Should be written at an appropriate Should be written at an appropriate level.level.

AuthorityAuthority Should list the author & the Should list the author & the appropriate credentials.appropriate credentials.


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ContentContent Should be well organized & the links Should be well organized & the links should work.should work.

CurrencyCurrency The info. On it Should be current.The info. On it Should be current.

Design The web pageDesign The web page should download quickly & be should download quickly & be

visually pleasing & easy to visually pleasing & easy to navigatenavigate

ObjectivityObjectivity Should be contain little Should be contain little advertising & be free of advertising & be free of preconceptions.preconceptions.


Multimedia on the webMultimedia on the web

MultimediaMultimedia RRefers to any application that efers to any application that combines text with graphics, combines text with graphics,

animation, audio, video &/or virtual animation, audio, video &/or virtual reality.reality.


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GraphicsGraphics as drawing, chart or photograph.as drawing, chart or photograph. More common format areMore common format are

JPEG compresses graphics to reduce their file JPEG compresses graphics to reduce their file size (less storage space).size (less storage space).

GIF also use compression techniques to GIF also use compression techniques to reduce file size works reduce file size works best with few distinct colors image.best with few distinct colors image.

ThumbnailThumbnail is a small version of a larger is a small version of a larger graphic. graphic.

Usually click it to display larger Usually click it to display larger image.image.


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AnimationAnimation

Is the appearance of motion created Is the appearance of motion created by displaying a series of still images by displaying a series of still images in sequence.in sequence.

Its make web page more visually Its make web page more visually interesting or draw attention to interesting or draw attention to important information or links.important information or links.


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Audio Audio MP3 format reduces an audio file to about one-MP3 format reduces an audio file to about one-

tenth its original size.tenth its original size.

PlayerPlayer, is a software used to play the audio file., is a software used to play the audio file.e.g. RealPlayer, windows media player, e.g. RealPlayer, windows media player,

iTunes.iTunes.

StreamingStreaming Is the process of transferring data in a Is the process of transferring data in a

continuous and even flow. continuous and even flow.

Allows users to access & use a file while it is Allows users to access & use a file while it is transmitting.transmitting.

Podcast Podcast is recorded audio stored on a web that can is recorded audio stored on a web that can be downloaded to computer or iPodbe downloaded to computer or iPod..


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VideoVideo

The clips are quite short in length.The clips are quite short in length.

MPEG-4 a popular video compression standers. MPEG-4 a popular video compression standers.

Virtual reality (VR)Virtual reality (VR) Used to simulate a real Used to simulate a real imagined environment imagined environment that appears at that appears at 3-D space.3-D space.

Plug-inPlug-in It is program that extends the capability of It is program that extends the capability of browser. browser.

You can download it from various web site You can download it from various web site without any cost.without any cost.e.g. Acrobat Reader, Flash player, QuickTime, e.g. Acrobat Reader, Flash player, QuickTime, RealPlayer, Shockwave player and Windows Media RealPlayer, Shockwave player and Windows Media player.player.


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Web PublishingWeb Publishing is the development & is the development & maintenance of webpage.maintenance of webpage.

Chap

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The five major steps to Web publishing:

1- plan a Web site.

2- Analyze and design a Web site.

3- create a Web site.

4- Deploy a Web site.

5- Maintain a Web site.


Chap

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E-CommerceE-Commerce Electronic commerce, is a business Electronic commerce, is a business transaction that occurs transaction that occurs over an electronic over an electronic network like the Net.network like the Net.

There are three types of e-commerce:There are three types of e-commerce:– Business-to-consumerBusiness-to-consumer Consists of the sale of Consists of the sale of

goods & services to general public. E.g. Dell.goods & services to general public. E.g. Dell.

– Business-to- BusinessBusiness-to- Business Business provide goods & Business provide goods & services to other businesses such as online services to other businesses such as online advertising, recruiting, training ,etc.advertising, recruiting, training ,etc.

– Consumer-to-ConsumerConsumer-to-Consumer Customer can purchase Customer can purchase from each other, such as in an online auction. E.g. from each other, such as in an online auction. E.g. eBayeBay


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E-CommerceE-Commerce

Electronic storefrontElectronic storefront, contains product , contains product description, graphics and shopping description, graphics and shopping cart.cart.

shopping cartshopping cart allows the customer to allows the customer to collect purchases.collect purchases.


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Internet ServicesInternet Services

E-Mail (electronic mail)E-Mail (electronic mail)FTPFTPNewsgroups & message boardsNewsgroups & message boardsMailing listsMailing listsChat RoomsChat RoomsInstant Messaging (IM) Instant Messaging (IM) Internet Telephony called Voice Internet Telephony called Voice

over IPover IP


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E-MailE-Mail (electronic mail) (electronic mail)

is a transmission of messages & files via a is a transmission of messages & files via a computer network.computer network.

2 type of it:2 type of it: E-mail program like Outlook Express.E-mail program like Outlook Express. Web-based e-mail programs.Web-based e-mail programs.

You can use it to create ,send, receive ,forward You can use it to create ,send, receive ,forward , store, print & delete , store, print & delete e-mail massages.e-mail massages.

The message can be simple text or can include The message can be simple text or can include an attachment file.an attachment file.


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E-MailE-Mail (electronic mail) (electronic mail)

E-mail addressE-mail address is a combination of a user name & a is a combination of a user name & a domain name that identifies a user so they can receive domain name that identifies a user so they can receive Internet e-mail.Internet e-mail.

User nameUser name is a unique combination of characters such is a unique combination of characters such as letters, numbers that identifies a specific user.as letters, numbers that identifies a specific user.

Most e-mail programs allow you to create an Most e-mail programs allow you to create an address address bookbook..

Most e-mail programs have a mail notification alert that Most e-mail programs have a mail notification alert that informs you a massage or sound when you receive a informs you a massage or sound when you receive a new mail.new mail.


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FTP FTP ( File Transfer Protocol)( File Transfer Protocol)

It is an Internet standers that permits the It is an Internet standers that permits the process of file uploading and downloading process of file uploading and downloading with other computers on the Internet.with other computers on the Internet.

UploadingUploading is the process of transferring is the process of transferring files from your computer to a server on the files from your computer to a server on the Internet.Internet.

Many OS include FTP capabilities.Many OS include FTP capabilities.


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FTP FTP ( File Transfer Protocol)( File Transfer Protocol)

An FTP sites is a collection of files including An FTP sites is a collection of files including text, graphics, audio clips, video clips, and text, graphics, audio clips, video clips, and program files that reside on an FTP server .program files that reside on an FTP server .

Many of FTP sites have anonymous FTP, let Many of FTP sites have anonymous FTP, let anyone can transfer some, if not all, available anyone can transfer some, if not all, available files.files.

Some FTP site restrict file transfer to those who Some FTP site restrict file transfer to those who have authorized accounts on the FTP server.have authorized accounts on the FTP server.


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Newsgroups & message boardsNewsgroups & message boards

Is an online area in which users have Is an online area in which users have written discussions about a particular written discussions about a particular subject.subject.

To participate in a newsgroup you used To participate in a newsgroup you used program calledprogram called

o Newsreader Newsreader

o Massage board ( web-based type).Massage board ( web-based type).


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Mailing listsMailing listsIs a group of e-mail names & Is a group of e-mail names &

addresses given a single name.addresses given a single name.

When massage is sent to a mailing list When massage is sent to a mailing list every person on the list receives a copy of it every person on the list receives a copy of it in his or her email box.in his or her email box.

Subscribe, to add your email to mailing list.Subscribe, to add your email to mailing list.

Unsubscribe , to remove your email.Unsubscribe , to remove your email.


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Chat RoomsChat RoomsChat is a real time typed conversation that takes Chat is a real time typed conversation that takes place on a computer.place on a computer.

Chat room is a location on an Internet server that Chat room is a location on an Internet server that permits users to chat with each other.permits users to chat with each other.

Some chat rooms support voice chats & video chats.Some chat rooms support voice chats & video chats.

To start a chat session,To start a chat session,Connect to chat server through a program called Connect to chat server through a program called

chat client. chat client. E.g. paltalk.E.g. paltalk.

The browsers usually include chat client.The browsers usually include chat client.


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Instant MessagingInstant Messaging (IM) (IM)

Is a real time Internet communications Is a real time Internet communications service that service that

notifies you when one or more people are notifies you when one or more people are online online

allows you to exchange msg, files or join a allows you to exchange msg, files or join a private chat room with themprivate chat room with them..

IM services support voice & video IM services support voice & video conversations.conversations.

To work, the receiver of a message must be To work, the receiver of a message must be willing to accept msg.willing to accept msg.


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Instant MessagingInstant Messaging (IM) (IM)

To use IM you may have to install IM To use IM you may have to install IM software on the computer or device.software on the computer or device.

Some OS include an IM.Some OS include an IM.

No standard currently exist for IM.No standard currently exist for IM.

To ensure successful communications, all To ensure successful communications, all individual on the contact list need to use individual on the contact list need to use the same or compatible IM.the same or compatible IM.


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Internet Telephony called Voice over IPInternet Telephony called Voice over IP

• Enable users to speak to other user over the Enable users to speak to other user over the Internet using their PC, Mobile computer & Internet using their PC, Mobile computer & device.device.

• Calls to other parties with the same Internet Calls to other parties with the same Internet telephone service often are free, while calls telephone service often are free, while calls that connect to the telephone network that connect to the telephone network

typically cost about 13$ to 25$ per monthtypically cost about 13$ to 25$ per month. .


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NetiquetteNetiquette is short for Internet etiquette, is the code of is short for Internet etiquette, is the code of

acceptable behaviors users should follow while acceptable behaviors users should follow while on the Net.on the Net.

• Be polite.Be polite.

• Read the FAQ if one exists.Read the FAQ if one exists.

• Don’t assume material is accurate or up-to-dateDon’t assume material is accurate or up-to-date

• Never read someone private e-mail.Never read someone private e-mail.


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• If we want a higher speed internet connections we can use ….,….,…..,or…..

Web browserWeb browser is application software is application software that allows users to access & view that allows users to access & view Web page.Web page.

• Web page download can take from a few Web page download can take from a few second to several minutes depending on second to several minutes depending on the speed of your connection & amount of the speed of your connection & amount of graphics involved.graphics involved.

• http://www.weather.com/maps/activity/skinprotection/index_large.html

•



copyright©2008 n.aljaffan®ksu1 the internet & world wide web discovering computers...

Documents

internet dial

internet worksconnecting

internet free

form of internet access

internet service pro

wide area network

world wide web consortium

original network