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.
Network
• Communication between the people or Nations or Institutions using any devices like Mobile, Radio, TV, Newspaper etc. is called network.
• 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.
Types of NetworkTypes of Network
LAN – LOCAL AREA NETWORK
MAN - METROPOLITAN AREA NETWORK
WAN - WIDE AREA NETWORK
LOCAL AREA NETWORK (LAN):LOCAL AREA NETWORK (LAN):
LAN
Server Workstation or Node or Client
Communication Between computers within limited distance.
Communication Media: Cable
Metropolitan Area Network (MAN):
MAN
Communication Between computers within a city.
Communication Media: Telephone Lines or Radio waves
Jayanagar
Basavangudi Rajajinagar
M G Road
Yalahanka
Wide Area Network (WAN) :
New York
Mumbai
Bangalore Landon
Australia
WAN
Communication Between computers across the world. Communication Media: Satellite
Applications of internetApplications of internet News www.timesofindia.com
Education www.bangaloreeducation.com
eBanking www.icicibank.com
eCommerce www.baazee.com
eGovernment kar.nic.in
Jobs timesjobs.com
eMail eGreeting Chatting Gaming Online
Terms to be Known: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