3. What is the Internet?
• A Network of Network is internet. Network
means Communication between two more
computers using cables or other media devices
like valves, satellite, other electronic devices.
Around the world.
• The largest network of networks in the world.
• Uses TCP/IP protocols and packet switching .
• Runs on any communications substrate.
4. Network
• Communication between
the people or Nations or
Institutions using any
devices like Mobile, Radio,
TV, Newspaper etc. is
called network.
5. • A network of networks, joining many
government, university and private
computers together and providing an
infrastructure for the use of E-mail, bulletin
boards, file archives, hypertext documents,
databases and other computational
resources
• The vast collection of computer networks
which form & act as a single huge network
for transport of data and messages across
distances which can be anywhere from the
same office to anywhere in the world.
7. Types of Network
LAN – LOCAL AREA NETWORK
MAN - METROPOLITAN AREA NETWORK
WAN - WIDE AREA NETWORK
8. LOCAL AREA NETWORK (LAN):
Communication Between computers within limited distance.
Communication Media: Cable
LAN
Server Workstation or Node or Client
9. Metropolitan Area Network (MAN):
Communication Between computers within a city.
Communication Media: Telephone Lines or Radio waves
MAN
Jayanagar Yalahanka
M G Road
Basavangudi Rajajinagar
10. Wide Area Network (WAN) :
Communication Between computers across the world.
Communication Media: Satellite
WAN
New York
Mumbai Australia
Bangalore Landon
15. Terms to be Known:
Surfing or Browsing
Website adderss or URL(Uniform Resource Locator)
Browser
Internet Explorer or Netscape Navigator etc …
Toolbar in browser
Saving web page & pictures
Hyperlink
Server
Search engine
www.google.com
www.yahoo.com
www.askjeeves.com
www.altavista.com
