Web Design

MELJUN CORTESMELJUN CORTES

Purpose of Web page and Web site Communicate Educate Entertain or Conduct business

The Internet The most popular and

fastest growing area. What is the use of

Internet?

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

The Internet Is a worldwide collection of networks, each

is composed of a collection of smaller networks.

Network Is composed of several computers

connected together share resources and data.

ISP – Internet Service Provider, is a business that has permanent Internet connections and provides temporary connections to individuals and companies free or for a fee.

Data Travels via InternetStep1: A personal Computer’s 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.

Data Travels via Internet Internet backbone – a 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.

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

speed data lines until it reaches the destination network server.

World Wide Web The collection of links throughout the

Internet creates an interconnected network. Which also referred to as the Web or

WWW. Web site – Web containing information that

can be referenced with a link. It is a collection of linked Web pages, typically starts with a home page.

World Wide Web Web page – Graphics, text, and other

information available at a Web site are stored in a specifically formatted electronic document.

Home page – provides information about the Web site’s purpose and content.

Splash page – is a lead-in page often containing multimedia.

World Wide Web Multimedia – is some combination of text,

graphics, animation, audio or video.

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

Switch Telephone Network (PSTN) A worldwide telephone system that handles

voice-oriented telephone calls. Dial-Up Lines

Is a temporary connection that uses one or more analog telephone lines for communication.

Accessing Information on the Web Dedicated Lines

Is a connection that always is established between two communications devices

Transfer rate – is the speed at which a line carries data and information. It expresses as bit per second (bps). It ranging from thousands of bits per second called kilobits per second (Kbps), Millions of bits per second called Megabits per seconds (Mbps), billions of bits per second called (Gbps).

ISDN Lines Integrated Services Digital Network Provides faster transfer rates than dial-up

telephone lines. A set of standards for digital transmission

of data over standard copper telephone lines.

Speeds of Various Connections to the Internet

$10,000 or more44 MbpsT3

$1,000 or more1.544 MbpsT1

$30 to $70128 Kbps – 2.5 Mbps

Cable TV (CATV)

$38 to $110128 Kbps – 8.45 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

Four Types of Dedicated Line DSL – Digital Subscriber Line

another digital alternative for the small business or home user.

Installation can provide a dial tone, so you can use the line for both voice and data. ADSL – Asymmetric Digital Subscriber Line

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

Four Types of Dedicated Lines ISDN – Integrated 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.

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 a

single communication line. Provides extremely fast data transfer rates. Only medium to large companies usually can afford

the investment in T-carrier line.

Service Providers An Internet Service Provider (ISP) – is a

business that has a permanent Internet connection and provides temporary connections to individuals and companies free or for fee. POP (Point of Presence) – To use a telephone

line to access the Internet, the telephone number you dial connects you to an access point on the Internet.

What do you considered when selecting a service provider? Be sure it provides at least one local POP

telephone number otherwise you will pay a long distance telephone charges.

Types of ISP A Regional ISP

Provides access to the Internet through one or more telephone numbers local to a specific geographic area.

A National ISP Is a larger business that provides local

telephone numbers in most major cities and town s nationwide.

WEB BROWSER To view Web pages on a computer

monitor. Called browser, a specific software

program that allows for the display of Web pages.

Example: Netscape, IE, Mozilla Firefox

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

its unique address, called Uniform Resource Locator (URL) in the browser’s address bar or location field.

URL – begins with the protocol, Hypertext Transfer Protocol (HTTP).

HTTP – is the communications standard to transmit data on the Web.

WEB BROWSER Domain Name – which 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 Numeric address commonly referred to as an IP address

Common Domain Name and Country Abbreviations

?org

?net

?mil

?gov

?edu

?com

OrganizationOriginal Top-Level Domain Abbreviations

Common Domain Name and Country Abbreviations

?uk

?se

?fr

?ca

?au

CountryCountry Abbreviations

Alternative Web Page Viewing Devices You can view Web Page using the

following: Desktop computer monitor Notebook computer Handheld computer (PDA) Web TV (for a television set)

Search Engine Software programs that find Web sites and

Web pages. How do you locate Web page on particular

topics in the search engine’s text box ?keyword

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

IMPACT OF THE INTERNET AND THE WEB

Communication Education Entertainment Business

TYPES OF WEB SITES Personal

Allows you to advertise your employment credentials, meet new friends, or share a common interest or hobby with fellow enthusiasts.

Organization / Topical Create an organization Web site to promote

member accomplishments or to encourage support and participation.

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)