One way to categorize the different types of computer network designs is by their scope or scale. For historical reasons, the networking industry refers to nearly every type of design as some kind of area network. Common types of area networks are: 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 LAN and WAN are the two primary and best-known categories of area networks, while the others have emerged with technology advances

1. 
1

2. 
2
Khushi Jain – 23
Shachi Jain - 50
Nandini Khandelwal – 33
AnnsMaria-5
Manisha Panwar-28
Bhavika Panwar-9
Preksha Gehlot-39
Sakshi Jain-47

3. 3
There are so many different types of computer
networks in existence, it can be hard to
understand the differences between them,
particularly the ones with very similar-sounding
names. This lesson explains the structures and
functions of some of the most popular computer
networks.

4. 
 A network consists of two or more computers that
are linked in order to share resources, exchange files,
or allow electronic communications.
 The computers on a network may be linked through
cables, telephone lines, radio waves, satellites, or
infrared light beams
Computer Network:
4

5. 
 File sharing
 Resource sharing
 Communication and collaboration
 Remote access
 Data protection
Need of Computer Network:
5

6. 
 Routers
 Gateways
 Repeaters
 Bridges
 Hub
 Modem
Devices Use To Connect Network:
6

7. 
 Local Area Network
 Wide Area Network
 Metropolitan Area Network
Types Of Network:
7

8. 
 A local area network (LAN) is a group of computers
and associated devices that share a common
communications line or wireless link.
 Typically, connected devices share the resources of a
single processor or server within a small geographic
area .
 . A local area network may serve as few as two or
three users or as many as thousands of users.
Local Area Network:
8

9. 9

10. 
 The WAN is a communications network that makes
use of existing technology to connect local
computer networks into a larger working network
that may cover both national and international
locations.
Wide Area Network:
10

11. 11

12. 
 A metropolitan area network (MAN) is a network that
interconnects users with computer resources in a geographic
area or region larger than that covered by even a large local
area network but smaller than the area covered by a wide area
network (WAN).
 It is also used to mean the interconnection of several local area
networks by bridging them with backbone lines
Metropolitan Area Network (MAN):
12

13. 
Network Topologies
 Network Topology – Maps of how the physical or logical paths of network devices
connect. The three major topologies are star, ring, and bus.
 Star Topology – Most common Ethernet network topology where each device
connects to a central hub or switch.
 Hub – A device used with the Universal Serial Bus or in a star network topology that
allows multiple device connections.
 Switch – In star networks, a Layer 2 central controlling device. A switch looks at
each data frame as it comes through each port.
 Ring Topology – Network that is physically wired like a star network but, logically
in a ring; passes control from one device to the next in a continuous fashion using a
special data packet called a token. Used in Token Ring networks.
 Bus Topology – Network wherein all devices connect to a single cable. If the cable
fails, the network is down.
 Mesh Topology – Network where all devices connect to each other by cabling to
provide link redundancy for maximum fault tolerance. Most likely in WANs.
13

14. 
Network Topologies
Hub/Switch
14

15. 
Network Topologies
Star Topology
15

16. 
Network Topologies
Logical Ring Topology
16

17. 
Network Topologies
Bus Topology
17

18. 
Network Topologies
18

20. 
20