Www and other key terms
Transcript of Www and other key terms
Abbreviated form of world wide web
Collection of websites
Born out by the experiment of hyper- linking various loosely related documents.
www?
WWW is a system of interlinked hypertext
documents that are accessed via internet with a
web browser, one can view WebPages , That may
contain text, images, video and other multimedia
and navigate between them via hyperlinks.
Internet is a massive network of network
It connects millions of computer globally.
WWW is just a portion of the internet
It is a way of accessing information over
the medium of the internet.
e.g. www.google.com
HTML (Hypertext mark up language)
HTTP (Hypertext transfer protocol)
Web browser (programme that allow us to view
web pages . Internet explorer,
Firefox, Netscape are e.g.
Web 1.0
o most of the page were static
o There were only image and hyperlinks
o Readers or users were unable to contribute site
Web 2.0
o Page are not static
o Communication felicities , sharing contents
o Readers or user can contribute to site
continued
Web 3.0
o Suggested name by John Markoff of the Newyork Times for the third generation of the web
oAll the application on web upgraded with more features
oMore connected , open and intelligent
Web 1.0 Web 2.0 Web 3.0
The web Social web Semantic web
Read only web Read and write Read, write, execute
Information sharing interaction immersion
Connect information Connect people Connect knowledge
Static, one way publishing
Two way communication Curiously undefined
e.g. Shopping carts, mp3,com(personal websites)
Blog, wikis, social network as yahoo, you tube , face book
Semantic blog(semi blog hays tack)
Electronic Mail
Most popular activity performed on internet
Invented by Ray Tomlinson in 1971
First e-mail message- ‘’QWERTYULOP’’
Change in e- mail system
Header and Body
We can send message to several people at the
same time
Send messages from any where
Very easy to use
Fast
Global
Environment friendly
Help to build sound relationship
Information overload
Lack the personal touch
Chance for misunderstanding
Steal of information
Spam messages
Virus attack
Do not write using uppercase letter, IT IS
CONSIDERED SHOUTING ,as this)
Always include descriptive subject
o Some emotions
:-) a smile
:-( a frown
LoL laughing out loud
Discussion between two or more groups of people who are at different places but can see and hear each other
Conducted with the help of computers
Act as a conference hall
Expensive-in early time
Economical
Significant travel savings
Improved communication
Discussion groups
Members of the groups send messages to the
mailing list address, which is then awarded to all
members of the list . If other subscribers wish to
share their thoughts about views on the topic ,
they can just click on the reply button and add
their comments, which are again distributed to all
the subscribers of mailing list through distribution
of reply e-mail to every user’s mail box.
Academic in nature
Must have an e-mail account to participate
o WBTOLL-L is an example(discussed web based
training)
o LIS-FORUM
Library and information science professionals
Administered by NCSI
Located in Bangalore
Continue…..
World wide discussion forum over internet on specific topic
Automatically delivered to all subscribers, where ever they may be in the world
Possible to attach sounds, video clips
Similarity to mailing list
Difference prevail in way of operation
Mailing list relay the message to our e-mail address, so we need to subscribe them to read the messages, but in news group , could be viewed by anyone as long as the service provider supplies the newsgroups.
Protocol, set of rules
Connect one computer to another
Remote login- another name
Developed in 1968
Allows the user to access internet resources on other computers around the world.
Library catalogue, data bases other internet tools such as FTP, gopher and www etc; are examples
Decreased popularity
Replaced webopacs instead of telnet in Library catalogues
File Transfer Protocol
Transmitting files between computers on the
internet
FTP is an application protocol that uses the
internet’s TCP/IP protocol
Used to download programmes and other files to
our computer from other servers
Using this, we can also update(delete, rename,,
move and copy files at a server, we need to
logon to an FTP server.
www, e-mail, Videoconferencing, Mailing list ,newsgroups, telnet , FTP - related to internet
WWW- world wide web
E-mail- Electronic mail
FTP - File transfer protocol
Telnet – remote login
Communication