Web Fundamentals Training Series

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5 Νοε 2013 (πριν από 4 χρόνια και 1 μήνα)

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Web Fundamentals

Training Series

All About the Web

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






2




What We’ll Be Covering…


What the Web Is (and Isn’t)


The World Wide Web: A Brief History


How the Web Works


Internet Components


Internet Transmission


Transmission Optimization


How the Web Enhances the Internet


What’s to Come

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






3




What the Web Is (and Isn’t)


The World Wide Web IS…


A global information medium which users can both read
and write to via computers


The World Wide Web IS NOT…


The Internet


The Web is a
service

on the Internet, like e
-
mail is


The Internet, under different names and forms, has been
around significantly longer than the WWW (since the early
1970’s)

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






4




The World Wide Web: A Brief History

Originated with and developed by Tim Berners
-
Lee in 1980’s


Originally conceived to link electronic documents together
via
hypertext

Aug. 1991
: World Wide Web publicly released


Typically used by university based science departments

Aug. 1994
: Commercialization of the Web begins


First business on Web was Pizza Hut (1994)


By 1998, e
-
business was fairly commonplace

Sept. 1994
: World Wide Web Consortium (W3C) founded at MIT


Now the governing body of the World Wide Web


Develops standards for web technology and practices


Kept WWW code royalty free and publicly accessible

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






5




The overall concept is simple


View files via a browser


Click on hyperlinks to move to the area of interest


View and/or download the information

The technology behind the concept is quite complex


Electronics Technology


Computing Devices


Cell Phones


Network (Internet) Technology


Wired


Wireless


Software Technology


Databases


Games

How the Web Works

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






6




Internet Components

Many different components are
required for the Internet to work and,
in turn, provide users with the Web
service

Additionally, several different
transmission methods are now
available, adding to the complexity


Dial
-
Up / DSL


Broadband


Wireless


Satellite


Wi
-
Fi / WiMAX

But, it all boils down to requesting and
receiving information

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






7




The Client / Server Relationship

Client
: some form of user, human or automated, who
makes a
request

for some type of electronic information
or resource.

Server
: stores electronic information in the form of
files and “serves” a
response

to requesting clients

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






8




Internet Transmission

Requires a complicated combination of hardware, software,
and industry protocols

In brief, each Internet transaction that occurs such as: a
hyperlink that is clicked on, e
-
mail, Instant Message, or a
file that is downloaded, goes through the following process

1.
Request / message is broken down into small, electronic
packets

2.
Packets are numbered by the requestor’s computer

3.
Packets are routed through the Internet to the appropriate
address

4.
Receiver’s computer acknowledges the receipt of each
packet

5.
Packets are reassembled by receiver’s computer

6.
Receiver responds, as necessary

7.
Process repeats

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






9




Transmission Optimization

Literally, countless trillions of packets are flying through
transmission paths all over the world at any given second

The bigger the file, the slower the transmission

Some multimedia files can be very resource dependent.
These files include the following:


Still Images


Audio


Animations & Video

In terms of web publications, it’s always a best practice to
use the least amount of resources possible. In doing so,
you not only better serve your audience, but also make
less demands on the system as a whole.

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






10




How the Web Enhances the Internet

Prior to the Web and the development of Mosaic, the first
web browser, all Internet transmissions were console based
and text only. No pictures. No sound

This has definitely changed

Web pages created to today’s expectations and standards have
benefits, but also drawbacks

+


Visually and audibly appealing

+

User friendly

-
High demand on resources

-
Many “power” users don’t understand supporting system issues

Console View

Mosaic (1993)

Firefox (2008)

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






11




What’s to Come


Multimedia is a collection of different media forms which
includes various combinations of the following:


Text


Still Images


Audio


Video / Animation

The tutorial series that follows this presentation is not
meant to be comprehensive, but rather a starting point to
help a user make the most out of available resources while
creating a functional, appealing web page.

Provided by Central Web Services

541
-
737
-
1189

http://oregonstate.edu/cws






12




Conclusion

This completes the Web Fundamentals tutorial. For additional
tutorials, please visit WebTrain, the CWS web publishing training
site, at:


http://oregonstate.edu/cws/webtrain



To submit a Help Ticket to Central Web Services go to:


http://oregonstate.edu/cws/contact


Other OSU resources for web and computer help:


http://oregonstate.edu/helpdocs