Network Communication

Definition of Network

- Network is a group of two or more computer systems linked together.

Types of Network

a) Local-area networks (LANs) : The computers are geographically close together ( that is in the same building).
b) Metropolitan-area networks (MANs) : A data network designed for a town or city.
c) Wide-area networks (WANs) : The computers are farther apart and are connected by telephone lines or radio waves.

Definition of Network Topology

-  The geometric arrangement of a computer system.

Types of network Topology

a) Bus Topology
- Bus Topoogy is a network topology in which in which a sets of clients are connected via a shared communications line/cables, called a bus.     

 

 

 



b) Star Topology
- A star network consists of one central switch, hub or computer, which act as a conduit to transmit messages.

 

 

 

c) Ring Topology

- A ring network is a network topology in which each node connects to exactly two others nodes, forming a single continuous pathways for signals through each node- a ring.

 

 

 

 





References

- http://www.webopedia.com/TERM/N/network.html
- http://en.wikipedia.org/wiki/Bus_network
- http://en.wikipedia.org/wiki/Star_topology
- http://en.wikipedia.org/wiki/Ring_topology