Computer Networking
- 3. Contents Definition Advantages Disadvantages Types Conclusion
- 4. Definition:- A computer network consists of two or more computers that are connected together to share information and resources. A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet. Other shared resources can include a printer or a file server.
- 5. Advantages of Computer Networks Information & Resource Sharing. Like printers, CD-ROM drives, hard disks and software can also be shared. Money Saving. Easy Communication. Internet Access Sharing. Data Security and Management. Entertainment It is an inexpensive system It increases cost efficiency. It boosts storage capacity.
- 6. Disadvantages of Computer NETWORKS Hardware, Software & Setup Costs. Hardware & Software Management Costs. Undesirable Sharing. Illegal or Undesirable Behavior. Data Security Concerns. It lacks independence. It poses security difficulties. It requires an expensive set-up. It requires an efficient handler. Its light policing usage promotes negative acts.
- 7. Types LAN - Local Area Network. WAN - Wide Area Network. WLAN - Wireless Local Area Network. MAN - Metropolitan Area Network SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network. CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network PAN - Personal Area Network
- 8. LAN (local area network) A LAN connects network devices over a relatively short distance. A networked office building, school, or home usually contains a single LAN, though sometimes one building will contain a few small LANs (perhaps one per room), and occasionally a LAN will span a group of nearby buildings. In TCP/IP networking, a LAN is often but not always implemented as a single IP subnet. In addition to operating in a limited space, LANs are also typically owned, controlled, and managed by a single person or organization They also tend to use certain connectivity technologies, primarily Ethernet and Token Ring. Example:- In a computer lab, there are 40 computer connected through LAN. The students can share software, files and data in the lab.
- 9. WAN (Wide Area Network) As the term implies, a WAN spans a large physical distance. The Internet is the largest WAN, spanning the Earth. A WAN is a geographically-dispersed collection of LANs. A network device called a router connects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address. A WAN differs from a LAN in several important ways. Most WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay and X.25 for connectivity over the longer distances. Example:- The network connecting the ATMs of a bank located in different cities.
- 10. MAN (Metropolitan- Area Network) MAN stands for Metropolitan Area Network. This types of network covers an area of a city. MAN is larger than LAN but smaller than WAN. It is usually used to connect two or more LANs in a city or town. Example:- The network connecting different branches of a company in same city. Cable TV network in a city.
- 11. Conclusion Computer networking will always be a fast and convenient means of transferring and sharing information, but people should be aware of its consequences as well. They should remember that often relying on this system can put them at certain risks that can be cause by its flaws and other malfunctions.