35
CSC 318 WEB APPLICATION DEVELOPMENT Week 1 : Introduction to Internet
| Date post: | 20-Aug-2015 |
| Category: |
Technology |
| Upload: | malik-uitm |
| View: | 618 times |
| Download: | 1 times |
CSC 318 WEB APPLICATION DEVELOPMENT
Week 1 : Introduction to Internet
THE PLAN
INTRODUCTION
What is Internet
HISTORY
ARPANET > INTERNET > WWW
APPLICATIONS
WWW, email, ftp, telnet, newsgroup, mailing list, chatroom, portals
INTRANET
Intranet vs. Internet
HOW TO HOOK UP TO THE INTERNET?
HOW TO HOOK UP TO THE INTERNET?
HOW TO HOOK UP TO THE INTERNET?
WHAT DOES INTERNET LOOK LIKE?
INTERNET PHYSICAL LAYOUT
BASIC TERM DEFINITION
INTERNET
A combination of networks connected each other
NETWORK
a collection of computers & devices connected together via communication devices & media
THE INTERNET
• world’s largest network
• worldwide collection of networks
Links together millions
of:
businesses
Government offices
Educational institutions
Individuals
WHAT DOES INTERNET PROVIDES?
Internet provides services:
www
FTP
Telnet
Newsgroups
Chat rooms
USES OF INTERNET
Access a wealth of info
(news, research & educational material)
conduct business,
(online banking & investment transactions)
entertainment & leisure
shop for goods & services
USES OF INTERNET (CONT)
Social Networking
(fb, chatrooms, twitter)
Access other computers & exchange files
Communication
ORIGIN OF INTERNET?
ARPANET : INTERNET HISTORY
ARPA:
(Advanced Research Projects Agency)
by Pentagon (DoD, USA)
To built a networking projects.
ARPA goals:
Allow scientists at different locations to share info & collaborate on military &
scientific projects.
Could function even if part of the network are disabled or destroyed by a
disaster.
That network, called ARPANET (September 1969)
ARPANET : INTERNET HISTORY
The Original ARPANET was a WAN
consisted of 4 main computers;
•University of California
•Stanford research Institute
•University of California at Santa Barbara
•University of Utah
1971, ARPANET had been connected to more than 30 universities, defense
departments, governments bodies and other institutions over the US.
ARPANET : INTERNET HISTORY
By 1984, ARPANET had more than 1000 individual computers
linked as a host.
In 1986, NSF (National Science Foundation) connected its
huge of 5 supercomputers centres called NSFnet, to ARPANET
This configuration of complex networks & hosts became
known as the INTERNET.
1990, commercial companies are allowed to join.
WWW –WORLD WIDE WEB
Exist in early 90’s
Consists of a worldwide collection of documents that
have built-in hyperlinks to other related documents
Allows user to navigate quickly from one document
to another
An electronic doc. on the web is call a web page.
WWW –WORLD WIDE WEB
Each web page on a web site has unique address, called Uniform
Resource Locator (URL)
URL consist of:
a protocol (Most begin with http://)
a domain name
(sometimes) the path to specific web page
PROTOCOL
PROTOCOL PURPOSE
http Transferring web pages
ftp Transferring files
telnet Remote login
news Requesting news from a news
group
mailto Sending e-mail
file Local file access
DOMAIN SUFFIX
SUFFIX USE
com Commercial sites
edu Educational institutions
gov government agencies
net Network organizations
org Non-profit organizations
DOMAIN SUFFIX
SUFFIX COUNTRY
my Malaysia
sg Singapore
ca Canada
au Australia
gb Great Britain
in India
WWW –WORLD WIDE WEB
Web Browser : software to access & view web page.
WWW –WORLD WIDE WEB
HTML :
Web page is created by using HTML (Hypertext markup language)
WWW –WORLD WIDE WEB
Web Server :
stores the web pages that comprise a web site.
Web Master :
individual who responsible for developing & maintaining web site.
WWW –WORLD WIDE WEB
• Electronic Mail
• Transmission of messages & files via a computer network
• E-mail function: create, send, receive, forward, store,
print & delete message.
• E-mail address: combination of a user name
& domain name.
FTP
File Transfer Protocol An Internet standard that allows user to exchange files with other computers on the Internet
FTP server – a computer that allows user to upload and download files using FTP FTP sites – a collection of files including text, graphics, audio, video and programs files.
TELNET
Program/command that enables user to connect remote computer on the Internet
To connect – enter a user name and password
Once connected, your computer acts like terminal directly linked to the remote computer
Example – accessing library cataloging.
NEWSGROUP
Online discussions group conducted by user in any particular subjects but in written.
To participate, user sends message to a certain newsgroup, then other users respond by replying to the message.
MAILING LISTS
A collection of e-mail addresses grouped in a single user.
When message is sent to a mailing list, every person in the list receives a copy of message in their mailbox
Example: [email protected]
CHAT ROOMS
Real-time typed conversation that takes place on a computer.
Must be online at the same time
Chat room – communication medium or channel that permits users to join chatting.
Support text-based & also graphical
PORTALS
•A Web Site but offers a variety of internet services from a single convenient location.
Services are:
Search Engine
Local, national, worldwide news, sports, weather
Reference e.g.. Yellow pages & maps
Shopping malls
Chat rooms
INTRANET
INTRA (means internal) & NET (network)
INTRANET
Small version of Internet that used within an organization.
Sometimes called an enterprise network
Use TCP/IP protocols
The Inter-network is a big network of networks.
