MELJUN CORTES Web and Internet

7/27/2019 MELJUN CORTES Web and Internet

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Web Design

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Purpose of Web page and Web

site Communicate

Educate Entertain or

Conduct business


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The Internet The most popular and

fastest growing area.

What is the use ofInternet?

Using the Internet:

Do research

Get a loan Shop for services

Merchandise

Job hunt

Buy and sell stocks

Watch movies and etc.

Shop for services


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The Internet Is a worldwide collection of networks, each

is composed of a collection of smaller

networks.


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Network Is composed of several computers

connected together share resources and

data.

ISPInternet Service Provider, is a

business that has permanent Internet

connections and provides temporaryconnections to individuals and companies

free or for a fee.


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Data Travels via InternetStep1: A personal Computers request for

information travels to the ISP.

Step2: When the request leaves the ISP, it

travels over medium speed data lines,

microwave stations, and communications

satellites until it reaches the internet

backbone.


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Data Travels via Internet Internet backbonea high-speed data lines

that connect major computer systems

located around the world.

Step 3: The request travels over high-speed

data lines along the Internet backbone.


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Data Travels via InternetStep 4: The request travels over medium-

speed data lines until it reaches the

destination network server.


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World Wide Web The collection of links throughout the

Internet creates an interconnected network.

Which also referred to as the Web orWWW.

Web siteWeb containing information that

can be referenced with a link. It is acollection of linked Web pages, typicallystarts with a home page.


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World Wide Web Web pageGraphics, text, and other

information available at a Web site are

stored in a specifically formatted electronicdocument.

Home pageprovides information about

the Web sites purpose and content. Splash pageis a lead-in page often

containing multimedia.


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World Wide Web Multimediais some combination of text,

graphics, animation, audio or video.


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Accessing Information on the Web Connecting to the Web is through Public

Switch Telephone Network (PSTN)

A worldwide telephone system that handlesvoice-oriented telephone calls.

Dial-Up Lines

Is a temporary connection that uses one ormore analog telephone lines forcommunication.


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Accessing Information on the Web Dedicated Lines

Is a connection that always is established

between two communications devices Transfer rateis the speed at which a line

carries data and information. It expresses asbit per second (bps). It ranging from

thousands of bits per second called kilobitsper second(Kbps), Millions of bits persecond called Megabits per seconds (Mbps),billions of bits per second called (Gbps).


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ISDN Lines Integrated Services Digital Network

Provides faster transfer rates than dial-uptelephone lines.

A set of standards for digital transmissionof data over standard copper telephone

lines.


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Speeds of Various Connections

to the Internet

$10,000 or more44 MbpsT3

$1,000 or more1.544 MbpsT1

$30 to $70128 Kbps2.5Mbps

Cable TV(CATV)

$38 to $110128 Kbps8.45

Mbps

ADSL

$10 to $40Up to 128 KbpsISDN

Local or long-

distance rates

Up to 56 KbpsDial-up

Approximate

Mo. Cost

Transfer RatesTypes of Line


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Four Types of Dedicated Line DSLDigital Subscriber Line

another digital alternative for the small

business or home user.

Installation can provide a dial tone, so youcan use the line for both voice and data.

ADSLAsymmetric Digital Subscriber Line

Type of DSL that supports faster transfer rates whenreceiving data than when sending data.


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Four Types of Dedicated Lines ISDNIntegrated Services Digital

Network

Use for small business and home user.

Faster than transfer rates than dial-up.

Set of standard for digital transmission of

data over standard copper telephone lines.


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Four Types of Dedicated Lines Cable Television Lines

CATV lines a popular type of dedicated line that

allows the home user to connect to the Internet. T-carrier Lines

Type of digital lines that carry multiple signals over asingle communication line.

Provides extremely fast data transfer rates.

Only medium to large companies usually can affordthe investment in T-carrier line.


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Service Providers An Internet Service Provider (ISP)is a

business that has a permanent Internet

connection and provides temporaryconnections to individuals and companiesfree or for fee. POP (Point of Presence)To use a telephone

line to access the Internet, the telephonenumber you dial connects you to an access

point on the Internet.


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What do you considered when

selecting a service provider? Be sure it provides at least one local POP

telephone numberotherwise you will pay

a long distance telephone charges.


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Types of ISP A Regional ISP

Provides access to the Internet through one or

more telephone numbers local to a specificgeographic area.

A National ISP

Is a larger business that provides localtelephone numbers in most major cities andtown s nationwide.


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WEB BROWSER To view Web pages on a computer

monitor.

Called browser, a specific softwareprogram that allows for the display of Webpages.

Example: Netscape, IE, Mozilla Firefox


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WEB BROWSER One way to access a Web page is to enter

its unique address, called Uniform

Resource Locator (URL) in the browsersaddress bar or location field.

URLbegins with the protocol, Hypertext

Transfer Protocol (HTTP). HTTPis the communications standard to

transmit data on the Web.


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WEB BROWSER Domain Namewhich is the text version

of a numeric address for each computer on

the Internet, follows the protocol.

http://www.yahoo.com

http://205.216.71.230

protocol Domain name

protocol IP address

The Numericaddresscommonly

referred to asanIP address
http://www.yahoo.com/http://205.216.71.230/http://205.216.71.230/http://205.216.71.230/http://www.yahoo.com/http://www.yahoo.com/


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Common Domain Name and

Country Abbreviations

?org

?net?mil

?gov

?edu

?com

OrganizationOriginal Top-Level DomainAbbreviations


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Common Domain Name and

Country Abbreviations

?uk

?se

?fr

?ca

?au

CountryCountry

Abbreviations


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Alternative Web Page Viewing Devices

You can view Web Page using thefollowing:

Desktop computer monitor

Notebook computer

Handheld computer (PDA)

Web TV (for a television set)


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Search Engine Software programs that find Web sites and

Web pages.

How do you locate Web page on particulartopics in the search engines text box ?

keyword


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Portal Are Web sites that offer not only search

services but also e-mail, chat rooms, news

and sports, and maps. Examples:

Excite

Yahoo

Alta Vista


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IMPACT OF THE INTERNETAND THE WEB

Communication

Education

Entertainment

Business


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TYPES OF WEB SITES Personal

Allows you to advertise your employment

credentials, meet new friends, or share acommon interest or hobby with fellowenthusiasts.

Organization / Topical

Create an organization Web site to promotemember accomplishments or to encouragesupport and participation.


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TYPES OF WEB SITES Commercial

The goal is to promote and sell a product(s)

or service(s). A larger organization or corporation

frequently creates an intranet. (PN)

Documents

MELJUN CORTES Web and Internet