☞ It is a collection of interconnected computers and other devices.
☞ It is used to share data and other resources (hardware and software resources).
☞ We can share resources such as printers and scanners.
☞ We can share data and access files from any computer.
☞ If there is any problem in the server, then no communication can take place.
☞ Network faults can cause loss of data.
☞ ARPANET (Advance Research Project Agency Network) :
It is a project sponsored by US department of defence.
☞ NSFNET (National Science federation network) :
It is developed by National Science foundation, was a high capacity Network and strictly used for academic and engineering research.
☞ INTERNET :
Network of networks makes the internet.
The computer are connected through www that comprises a large network and shares a common communication protocol (TCP/IP).