Saturday, 22 June 2013 | 02:10 | 0 Words
Assalammualaikum ! People nowadays always access their Internet.Are one of them too? If yes,Do you know the history of Internet? No? Ok lets reading my next post...
History
of the Internet
Mid
1960:Papers
on “Packet Switching” emerge.
End
1969s: ARPA
sponsors the development of a packet-switching network, called the ARPANET.
First four nodes are UCLA, SRI, U. Utah, UCSB.
1974: The
TCP/IP protocols and model are being proposed by Cerf/Kahn.
The
Internet : History and the Underlying Technologies
1980:
IPv4 is introduced
1983: ARPANET
adopts TCP/IP. At this time, the ARPANET has 200 routers.
1984 :NSF
funds a TCP/IP based backbone network. This backbone
grows into the NSFNET, which becomes the successor of the ARPANET.
1995:NSF
stops funding of NSFNET. The Internet is completely commercial
Time
Line of the Internet
Early Arpanet
• FTP
• Email
• Telnet
Internet
• It is the largest network in the world that connects
hundreds of thousands of individual networks all over the world.
Applications
of the Internet
• Traditional core applications:
Email
-News
-Remote Login
-File Transfer
-World-Wide Web (WWW)
-Videoconferencing
-Telephony
- P2P applications
-social network
-News
-Remote Login
-File Transfer
-World-Wide Web (WWW)
-Videoconferencing
-Telephony
- P2P applications
-social network
Illustration
of the Internet network
Hypertext
Markup Language (HTML)
HTML
uses codes, or tags, to tell the Web browser software how to display the text
contained in the document
The World Wide Web
• Created by Tim
Berners Lee, a researcher for CERN, in 1989
• Originally to
aid researchers find information through a linked texts
• Used HTTP for
protocol and HTML for content of pages
What
is Web?
• The Web (World Wide Web) consists of
information organized into Web pages containing text and graphic images.
The Current Browsers
Internet Explorer
Browser
Email (Outlook Express)
Latest Developments
• File Sharing
– Napster,
Gnutella, Morpheus
• Facebook
• Blogging
• YouTube
• Broadband
The Internet : ISP, Configuring Internet Connection,
Troubleshooting
What is the Internet?
• A network of networks
• The internet transmits data from one computer
(called a host) to another
What is the Internet networks?
• Linked networks that work much the same way -- they
pass data around in packets, each of which carries the addresses of its sender
and receiver
How the Internet works? How
the Internet works?
. Transport control protocol (TCP)
• A protocol that operates at the transport layer and
is used in combination with IP by most Internet applications
2. Backbone
• An Internet high-speed, long distance communications
links (like a bus; wire that connects nodes)
HTTP
• The most common transfer protocol used on the
Internet is the Hypertext Transfer Protocol (HTTP).
Troubleshooting Internet connection
• General tips on troubleshooting your internet
connection:
- make sure you have correct IP information
- Carry out basic PING tests
- Check Browser configuration
The Internet : Issues
Internet Safatey- Basics
- What is Phishing
- What is Spoofing
- Avoiding Scams
- Ways to avoid being Spoofed
-More Spoofing
- Virus Protection softwar
-Email Attachments
