TYPES OF NETWORKS
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This document discusses different types of computer networks. A local area network (LAN) connects computers within a small geographic area like a home, office, or building. A metropolitan area network (MAN) spans a larger area like an entire city. A wide area network (WAN) connects multiple LANs and MANs across large distances and geographic areas, such as an entire country. Personal area networks (PANs) transmit data within 10 meters, such as between wireless devices owned by an individual. Campus area networks (CANs) serve universities or large schools within 1-5 km. Home area networks (HANs) connect devices in a home. Wireless local area networks (WLANs) use radio waves to connect
TYPES OF NETWORKS
- 1. Presented by : Sangeeta Saini M.Com ( final) 671
- 2. CONTENTS
- 3. Computer Network When a number of computers are connected with each other in such a way that they can share information , the system is called network .
- 4. Group working To share information. To share computer files. To share computer equipments. To improve communication speed and accuracy
- 5. Local area network (LAN) • Developed in 1970s • A LAN is a small and privately owned network to provide local connectivity within a small region. • It spans from few thousand meters to 1 km. Limited in geographical site • LAN supports less users at a time , it is around 5 to 10.Limited users
- 6. Example of LAN Two or more computers are connected in small office, small building, small company and internet café.
- 7. Advantages and disadvantages of LAN Lower in cost. Sharing of expensive resources such as laser printers. High speed of exchange of essential information. High reliability. When number of nodes became increase then performance became decrease. Area covered is limited.
- 8. Metropolitan area network (MAN) • A MAN is a network designed to extend over an entire city. • The MAN range between 10 to 50 km. • This network is larger than LAN but smaller than WAN. • Developed in 1980s. • Covers wider area than LAN. • Information can be disseminated more widely, rapidly and significantly.Advantages • Cost is higher than LAN. • Data rate is slow compare to LAN. • Difficult to manage. Disadvantages
- 9. The cable television networks available in the cities.
- 10. Wide area network (WAN) • A WAN is used to transmit data and information over large geographical distances which may even span entire countries. • Developed in 1960s. • It contain multiple smaller networks ,such as LANs and MANs. • It covers the range 100 to 1000 km. • Covers large geographical area . Advantages • Expensive • Protection against hackers and viruses adds more complexity and expense. Disadvantages
- 11. Example of WAN Railway ,airlines and banking companies are example of such network as they have a central database that is used by all the terminals.
- 12. Personal area network(PAN) • PAN is used to transmit data and information very short distances which control by a single person within single building. • PAN connectivity range up to 10 meters. • It includes wireless computer keyboard , wireless printers and TV remotes. • Efficient, cost effective and convenient. Advantages • Shorter distance up to 10 meters only. • Data rate is slow compare to other network. Disadvantages
- 13. Example of PAN Internet hotspot which contain up to 8 devices connected with a single hotspot.
- 14. CAN is larger than LAN ,but smaller than MAN. It covers area of a university or large school. It is controlled by campus owner. The range of CAN is measured 1 km to 5 km. • It can be wireless or wired network. • Cost effective. Advantages • Difficult to manage. Disadvantages
- 15. Example of CAN • Network used in university or large school.
- 16. Home area network (HAN) It operates within a small area typically a home. It connects home digital devices such as PCs , mobile phones, smart watch , home security system into a common network. • Easy to manage. • High security.Advantages • If backbone network damaged than whole network become halt.Disadvantages
- 18. AWLAN is wireless local area network to communication over short distance using radio wave. Area may range from a single room to entire campus. • Installation is quick and easy. • Easier to provide connectivity in area that are difficult to lay cables. Advantages • When the number of computers that use the network increases , the data transfer rate reduced. Disadvantages
- 19. Example of WLAN WI-FI or Bluetooth
- 20. STORAGE AREA NETWORK (SAN) A SAN is a high speed network of storage devices that also connect those storage devices with servers. SAN storage devices include tape and disks. • A SAN is reliable and fast data recovery solution.Advantages • It is expensive to implement.Disadvantages
- 21. SAN
- 22. In short, we can say that the dynamic world today needs fast communication channels to move data frequently from one place to another.To move data quickly from one place to another , the concept of networking has been introduced.