The document discusses the history and development of the World Wide Web. It begins by explaining how the early Internet only allowed viewing of plain text screens but companies like AOL and CompuServe began developing ideas to change the layout and visual experience. The World Wide Web was then created, allowing for hyperlinked documents with multimedia like images and sounds. It also standardized the URL and made the WWW technology free to access, launching the Internet era of search engines, e-commerce, and more. The document then explores some key components and functions of how the World Wide Web works.

2. The Web's historicThe Web's historic logologo designeddesigned
byby Robert CailliauRobert Cailliau

3. AbbreviationAbbreviation
•W3W3
•TheThe webweb
• WWWWWW

4. • The World Wide Web (WWW) is a systemThe World Wide Web (WWW) is a system
of extensively interlinked hypertextof extensively interlinked hypertext
documents: a branch of the Internet. Withdocuments: a branch of the Internet. With
a web browser, one can view web pagesa web browser, one can view web pages
that may contain text, images, videos, andthat may contain text, images, videos, and
other multimedia and navigate betweenother multimedia and navigate between
them by hyperlinks.them by hyperlinks.

5. • Before the World Wide Web, the Internet onlyBefore the World Wide Web, the Internet only
allowed people to view screens of text, all ofallowed people to view screens of text, all of
which were the same size and font. Even thoughwhich were the same size and font. Even though
it was easy to look up and receive information,it was easy to look up and receive information,
this made the Internet very boring. To make thethis made the Internet very boring. To make the
Internet more exciting, companies likeInternet more exciting, companies like AOLAOL andand
CompuServeCompuServe began developing ideas tobegan developing ideas to
change layout and visual settings. Eventually,change layout and visual settings. Eventually,
the World Wide Web changed it's appearance,the World Wide Web changed it's appearance,
as well as made it possible for pictures andas well as made it possible for pictures and
sounds to be displayed.sounds to be displayed.

6. INTERNET ERAINTERNET ERA
• The URL allowed the viewer to haveThe URL allowed the viewer to have
more options when naming a certainmore options when naming a certain
website. Internet history changed onwebsite. Internet history changed on
April 30, 1993 when CERN's directorsApril 30, 1993 when CERN's directors
announced that WWW technologyannounced that WWW technology
would be free to anyone to access.would be free to anyone to access.
Soon, search engines, onlineSoon, search engines, online
shopping sites, and market positionsshopping sites, and market positions
took the Internet by storm. Thetook the Internet by storm. The
Internet era had officially begun.Internet era had officially begun.

7. A pool of humanA pool of human
knowledgeknowledge
• The World-Wide Web was developedThe World-Wide Web was developed
to be a pool of human knowledge,to be a pool of human knowledge,
and human culture, which would allowand human culture, which would allow
collaborators in remote sites to sharecollaborators in remote sites to share
their ideas and all aspects of atheir ideas and all aspects of a
common project.common project.

8. Internet and World WideInternet and World Wide
• The terms Internet and WorldThe terms Internet and World
Wide Web are often used inWide Web are often used in
every-day speech without muchevery-day speech without much
distinction. However, the Internetdistinction. However, the Internet
and the World Wide Web are notand the World Wide Web are not
one and the same.one and the same.

9. DifferenceDifference
• The Internet is a global system ofThe Internet is a global system of
interconnectedinterconnected computer networkscomputer networks. In. In
contrast, the Web is one of thecontrast, the Web is one of the
servicesservices that runs on the Internet.that runs on the Internet.

10. • The World Wide Web is aThe World Wide Web is a
collection of textual documentscollection of textual documents
and other resources, linked byand other resources, linked by
hyperlinks and URLs, transmittedhyperlinks and URLs, transmitted
byby web browsersweb browsers andand
web serversweb servers. In short, the Web. In short, the Web
can be thought of as ancan be thought of as an
applicationapplication "running" on the"running" on the
Internet.Internet.

11. FUNCTIONFUNCTION
• Viewing aViewing a web pageweb page on the World Wideon the World Wide
Web normally begins either by typing theWeb normally begins either by typing the
URL of the page into a web browser, or byURL of the page into a web browser, or by
following a hyperlink to that page orfollowing a hyperlink to that page or
resource.resource.
• The web browser then initiates a series ofThe web browser then initiates a series of
communication messages, behind thecommunication messages, behind the
scenes, in order to fetch and display it.scenes, in order to fetch and display it.

12. URL and httpURL and http
• URLURL -- Uniform Resource Locator: aUniform Resource Locator: a
protocol for specifying addresses on theprotocol for specifying addresses on the
Internet.Internet.
• http-http-hypertext transfer protocolhypertext transfer protocol a set ofa set of
tags and rules (conforming to SGML) for usingtags and rules (conforming to SGML) for using
them in developing hypertext documentsthem in developing hypertext documents
http://en.wikipedia.org/wiki/World_Wide_Webhttp://en.wikipedia.org/wiki/World_Wide_Web

13. MODULE-IIMODULE-II
(Part-I)(Part-I)
VIDEOVIDEO
CONFERENCINCONFERENCIN
GG

14. VIDEOVIDEO
CONFERENCINGCONFERENCING
• VideoconferencingVideoconferencing is also known as:is also known as:
video conferencevideo conference
oror
videoteleconferencevideoteleconference

15. Difference betweenDifference between
Videoconferencing and VideophoneVideoconferencing and Videophone
callscalls
• Videoconferencing differs fromVideoconferencing differs from
videophone calls in that it's designed tovideophone calls in that it's designed to
serve a conference rather than individuals.serve a conference rather than individuals.
It is an intermediate form ofIt is an intermediate form of
videotelephony, first deployedvideotelephony, first deployed
commercially by AT&T during the earlycommercially by AT&T during the early
1970s using their Picturephone1970s using their Picturephone
technology.technology.

16. • Video conferencing is a means ofVideo conferencing is a means of
communication by the use of ancommunication by the use of an
audio and video transmission byaudio and video transmission by
the use of the internet.the use of the internet.
• It is meeting of two or moreIt is meeting of two or more
people at an exact time atpeople at an exact time at
different locations.different locations.

17. NEWEST WAYNEWEST WAY
• It is considered as the newest way ofIt is considered as the newest way of
having a meeting or a conferencehaving a meeting or a conference
with participants located in differentwith participants located in different
areas or countries.areas or countries.

18. ComponentsComponents
• Videoconferencing makes use ofVideoconferencing makes use of
telecommunications of video and audio totelecommunications of video and audio to
bring along individuals at different sitesbring along individuals at different sites
together for a congregation.together for a congregation.

19. Some of the components requiredSome of the components required
for a videoconferencing systemfor a videoconferencing system
include:include:
• Video inputVideo input
• Video outputVideo output
• Audio inputAudio input
• Audio outputAudio output
• Data transferData transfer

20. COSTLYCOSTLY
• A video conference system is generally ofA video conference system is generally of
a higher cost than a videophone and ita higher cost than a videophone and it
deploys higher capabilities. During videodeploys higher capabilities. During video
conferencing each user requires aconferencing each user requires a
computer, webcam, microphone andcomputer, webcam, microphone and
broadband internet connectionbroadband internet connection forfor
participation in video conferencing.participation in video conferencing.

21. Advantages ofAdvantages of
VideoVideo
ConferencingConferencing

22. Saves timeSaves time
• You do not have to allocate for travelingYou do not have to allocate for traveling
expenses, accommodation and food. Byexpenses, accommodation and food. By
the use of video conferencing a lot ofthe use of video conferencing a lot of
money can be saved especially if themoney can be saved especially if the
numbers of participants are numerous. Itnumbers of participants are numerous. It
takes time to travel to another place wheretakes time to travel to another place where
the meeting will be held.the meeting will be held.

23. Saves timeSaves time
• Video conferencing saves time.Video conferencing saves time.
The time for travel to anotherThe time for travel to another
place will instead be used forplace will instead be used for
work. More time for work meanswork. More time for work means
more productivity.more productivity.

24. Comprehensive andComprehensive and
PresentablePresentable
• Video conferencing enables a moreVideo conferencing enables a more
comprehensive and presentablecomprehensive and presentable
presentation or report because resourcespresentation or report because resources
are on hand and readily available withinare on hand and readily available within
reach. It is an advantage if the resourcesreach. It is an advantage if the resources
are within the environment.are within the environment.

25. More ideal as compared toMore ideal as compared to
phone conferencephone conference
• It is more ideal compared to phoneIt is more ideal compared to phone
conference. The data you wanted to knowconference. The data you wanted to know
can be easily presented by seeing itcan be easily presented by seeing it
directly on the monitor. The usual way ofdirectly on the monitor. The usual way of
sending information is through fax machinesending information is through fax machine
and email but by the use of videoand email but by the use of video
conferencing, graphs and charts can beconferencing, graphs and charts can be
seen and possible questions can beseen and possible questions can be
answered immediately. Problems within theanswered immediately. Problems within the
company or organizations can becompany or organizations can be
discussed freely for everybody to hear anddiscussed freely for everybody to hear and
find solutions to solve it. Participants canfind solutions to solve it. Participants can
make their own suggestions and latermake their own suggestions and later
decide about it.decide about it.

26. Advantages of the NetAdvantages of the Net
• Establish a presenceEstablish a presence
Over seven Million people have access to theOver seven Million people have access to the
world wide web with more and more addedworld wide web with more and more added
every day. Your business cant afford to ignoreevery day. Your business cant afford to ignore
this many potential customers. Become anthis many potential customers. Become an
active member of this new and growing cyber-active member of this new and growing cyber-
culture by developing a web site. Your companyculture by developing a web site. Your company
can easily and inexpensively expand with a newcan easily and inexpensively expand with a new
store that is open 24 hours a day in one of thestore that is open 24 hours a day in one of the
fastest growing cities in history.fastest growing cities in history.

27. • NetworkingNetworking
Develop lines of communication thatDevelop lines of communication that
promote contact with potential clients andpromote contact with potential clients and
organizations. What an easy way to passorganizations. What an easy way to pass
out hundreds or thousands of businessout hundreds or thousands of business
cards advertising what you do and howcards advertising what you do and how
your clients can contact you.your clients can contact you.

28. • Information :Information :
Information is probably the biggest advantageInformation is probably the biggest advantage
internet is offering. The Internet is a virtualinternet is offering. The Internet is a virtual
treasure trove of information. Any kind oftreasure trove of information. Any kind of
information on any topic under the sun isinformation on any topic under the sun is
available on the Internet. The search enginesavailable on the Internet. The search engines
like Google, yahoo is at your service on thelike Google, yahoo is at your service on the
Internet. You can almost find any type of data onInternet. You can almost find any type of data on
almost any kind of subject that you are lookingalmost any kind of subject that you are looking
for. There is a huge amount of informationfor. There is a huge amount of information
available on the internet for just about everyavailable on the internet for just about every
subject known to man, ranging from governmentsubject known to man, ranging from government
law and services, trade fairs and conferences,law and services, trade fairs and conferences,
market information, new ideas and technicalmarket information, new ideas and technical
support, the list is end less.support, the list is end less.

29. • ServicesServices
Many services are now provided on theMany services are now provided on the
internet such as online banking, jobinternet such as online banking, job
seeking, purchasing tickets for yourseeking, purchasing tickets for your
favorite movies, guidance services onfavorite movies, guidance services on
array of topics engulfing the every aspectarray of topics engulfing the every aspect
of life, and hotel reservations. Often theseof life, and hotel reservations. Often these
services are not available off-line and canservices are not available off-line and can
cost you more.cost you more.

30. • Conduct businessConduct business
• A web site does not have to make moneyA web site does not have to make money
to be considered a successful endeavor,to be considered a successful endeavor,
but it does not hurt to generate some typebut it does not hurt to generate some type
of income. Your web site can provide yourof income. Your web site can provide your
customers with the tools needed to locatecustomers with the tools needed to locate
the exact product that they are looking forthe exact product that they are looking for
and the forms needed to purchase anyand the forms needed to purchase any
item or service onlineitem or service online

31. • Provide files to downloadProvide files to download
All pamphlets, brochures, advertisements, andAll pamphlets, brochures, advertisements, and
even a demonstration video of your product oreven a demonstration video of your product or
service can be down loaded from your web site.service can be down loaded from your web site.
Anyone interested in your company will haveAnyone interested in your company will have
access to files that can be designed to printaccess to files that can be designed to print
beautiful informational brochures, complete withbeautiful informational brochures, complete with
pictures of your staff, or tables and graphs ofpictures of your staff, or tables and graphs of
information about your company. These sameinformation about your company. These same
files can have links to picture, sound, and videofiles can have links to picture, sound, and video
files to enhance your ability to deliver anfiles to enhance your ability to deliver an
interactive and effective introduction to yourinteractive and effective introduction to your
companies products and services.companies products and services.

32. • Remote employee/office accessRemote employee/office access
Your employees on the road or in satelliteYour employees on the road or in satellite
offices may need up-to-the-minuteoffices may need up-to-the-minute
information to properly accomplish theirinformation to properly accomplish their
tasks. Sensitive information can betasks. Sensitive information can be
protected with a password for employeeprotected with a password for employee
access only. For the cost of a local phoneaccess only. For the cost of a local phone
call an employee can log into the "office"call an employee can log into the "office"
from anywhere in the world at any time.from anywhere in the world at any time.

33. • Entertainment :Entertainment :
Downloading games, visiting chatDownloading games, visiting chat
rooms or just surfing the Web arerooms or just surfing the Web are
some of the sources of entertainmentsome of the sources of entertainment
on the net. Music, hobbies, news andon the net. Music, hobbies, news and
more can be found and shared on themore can be found and shared on the
InternetInternet

34. • E-CommerceE-Commerce
Ecommerce is the concept used for anyEcommerce is the concept used for any
type of commercial maneuvering, ortype of commercial maneuvering, or
business deals that involves the transfer ofbusiness deals that involves the transfer of
information across the globe via Internet. Itinformation across the globe via Internet. It
has become a phenomenon associatedhas become a phenomenon associated
with any kind of shopping, almostwith any kind of shopping, almost
anything. You name it and Ecommerceanything. You name it and Ecommerce
with its giant tentacles engulfing everywith its giant tentacles engulfing every
single product and service will make yousingle product and service will make you
available at your door steps. It has got aavailable at your door steps. It has got a
real amazing and wide range of productsreal amazing and wide range of products
from household needs, technology tofrom household needs, technology to
entertainment.entertainment.

35. Disadvantages of the NetDisadvantages of the Net
• Theft of Personal informationTheft of Personal information
If you use the Internet, you may be facingIf you use the Internet, you may be facing
grave danger as your personal informationgrave danger as your personal information
such as name, address, credit cardsuch as name, address, credit card
number etc. can be accessed by othernumber etc. can be accessed by other
culprits to make your problems worse.culprits to make your problems worse.

36. • SpammingSpamming::
Spamming refers to sending unwanted e-Spamming refers to sending unwanted e-
mails in bulk, which provide no purposemails in bulk, which provide no purpose
and needlessly obstruct the entire system.and needlessly obstruct the entire system.

37. • Virus threatVirus threat
Virus is nothing but a program whichVirus is nothing but a program which
disrupts the normal functioning of yourdisrupts the normal functioning of your
computer systems. Computers attached tocomputer systems. Computers attached to
internet are more prone to virus attacksinternet are more prone to virus attacks
and they can end up into crashing yourand they can end up into crashing your
whole hard disk, causing you considerablewhole hard disk, causing you considerable
headache.headache.