Tuesday, 17 September 2013

NETWORK .

 A Network is a collection of computers and devices connected together via communications devices and transmission media.
Computer communications is a process in which two or more computers or devices transfer data, instructions, and information.

Some communications involve cables and wires; others are sent wirelessly through the air.



A Network Topology refers to the layout of
the computers and devices in a
communications network.

It refers to both the physical and logical
layout of a network.

Physical Topology
The arrangement of a cabling is the physical
 topology.
Logical Topology
The path that data travels between computers
 on a network is the logical topology.
Types of Network Topologies : 



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