back to the basic of IT..

Meowww...meowww..Hehe..

Let’s talk about various networks that we used to connect the internet..alright, I know all of you are not interested reading so much right ok we juz straight forward with the points yea…(^_^)

Actually there are about eight types of network which are used world wide these days, both in houses and commercially. These networks are used on the bases of their scale and scope, historical reasons, preferences for networking industries, and their design and implementation issues. LAN and WAN are mostly known and used widely. LAN, local area network was first invented for communication between two computers. Let’s go through of these..

1) Types of communication networks:

•  LAN - Local Area Network
•  WLAN - Wireless Local Area Network
• WAN - Wide Area Network
• MAN - Metropolitan Area Network
• SAN - Storage Area Network, It can also refer with names like System Area Network, Server Area Network, or sometimes Small Area Network
• CAN - Campus Area Network, Controller Area Network, and often Cluster Area Network
• PAN - Personal Area Network
• DAN - Desk Area Network

1. Wide Area Network (WAN)

A WAN spans a large geographic area, such as a state, province or country. WANs often connect multiple smaller networks, such as local area networks (LANs) or metro area networks (MANs). The world's most popular WAN is the Internet. Some segments of the Internet, like VPN-based extranets, are also WANs in themselves. Finally, many WANs are corporate or research networks that utilize leased lines.

2. Local Area Network(LAN)?

A computer network that spans a relatively small area. Most LANs are confined to a single building or group of buildings. However, one LAN can be connected to other LANs over any distance via telephone lines and radio waves. A system of LANs connected in this way is called a wide-area network (WAN).

3. Metropolitan Area Network (MAN)?

Short for Metropolitan Area Network, a data network designed for a town or city. In terms of geographic breadth, MANs are larger than local-area networks (LANs), but smaller than wide-area networks (WANs). MANs are usually characterized by very high-speed connections using fiber optical cable or other digital media.

4. Wireless - Local Area Network (WLAN)

A LAN, local area network based on wireless network technology mostly referred as Wi-Fi. Unlike LAN, in WLAN no wires are used, but radio signals are the medium for communication. Wireless network cards are required to be installed in the systems for accessing any wireless network around. Mostly wireless cards connect to wireless routers for communication among computers or accessing WAN, internet.

5. CAN - Campus Area Network

Networking spanning with multiple LANs but smaller than a Metropolitan area network, MAN. This kind of network mostly used in relatively large universities or local business offices and buildings.

6. SAN - Storage Area Network 

SAM technology is used for data storage and it has no use for most of the organization but data oriented organizations. Storage area network connects servers to data storage devices by using Fiber channel technology.

7. SAN - System Area Network SAN, 

system area networks are also known as cluster area network and it connects high performance computers with high speed connections in cluster configuration.

8. The Desk Area Network (DAN)

 is a multimedia workstation based around an ATM interconnect (as shown in the above diagram). All communication between peripherals and even between the CPU and its main memory is achieved by sending ATM cells through a switch fabric. A prototype implementation based on the Fairisle switch fabric has been built and is being used to investigate the architecture. Below is the diagram of DAN.