about computer

2. Computer
Networking

3. CONCEPT
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.

4. Categories of Networks
Network
Local Area
Network
(LAN)
Metropolitan
Area Network
(MAN)
Wide Area
Network
(WAN)

5. Local Area Network
(LAN)
➜A LAN is a collection of
networking equipment located
geographically close together.
➜A local Area Network is a
computer network that spans a
relatively small area.
➜Speed is typically 10Mbps to
1000Mbps.

7. Computer network
Computer peripheral devices library
Computers and network isometric library
External digital devices library
Internet symbol library
Logical network diagram library
Logical symbol library
Network hardware library
How to draw local area network
diagram
Concept draw has 1004 vector stencils in the 40
libraries that help you to start using software for
designing your own local area network diagram.

8. Types of LAN
➜Topology
The geometric arrangement of devices on the
network.
➜Protocols
The rules and encoding specifications for sending
data. The protocols also determine whether the
network uses a peer to peer or client/server
architecture.
➜Media
Devices can be connected by twisted pair wire,
coaxial cables, or fiber optic cables.

9. Advantages
➜Resource Sharing
➜Easy communication
➜Software application
shearing
➜Data Security
➜Internet Sharing

10. Disadvantages
➜Privacy threat
➜Data Security
concerns
➜Covers limited area

11. Metropolitan Area Network
A Metropolitan Area Network (MAN) is a network that
joins users with computer system resources in a
geographical area or area bigger than that covered by
even a wide local area network (LAN) however smaller
sized than the area covered by a wide area network
(WAN).
Transmission rate is 56 kbps to 50 Mbps.

12. Characteristics of
MAN
➜A Metropolitan Area Network
(MAN) is a large computer system
network that generally extends a
city.
➜The geographical area of the
MAN is larger than LAN because
MANs are formed by connecting
multiple LANs.

13. Advantages
➜ Cover large area.
➜ Higher data speed.
➜ Efficiency and shared access.
➜ All the computer-owning residents of
the area have equal ability to go on
line.

14. Disadvantages
➜Security problem
➜Difficult to maintain
➜More cable require for a MAN
connection form one place to other
place.

15. Wide Area Network
(WAN)
➜WAN is a network that
covers a large area. It
connects computer and
other devices in
different cities and
countries.
➜Transmission rate is
56Kbps to 50Mbps.

16. Use of WANs

17. Need of WANs

19. Advantages
➜It connects two or more
LANs
➜It makes banking easy
➜It does not have limited
scope of activates
➜It enable us a big
platform for vast and
extensive study

20. Disadvantages
➜The latency period on
WAN is very high
➜It has low bandwidth,
easy to lose connection
➜Cost for equipment and
technology is very high
for WAN

21. Solution to problem
on WAN
➜Security issue can be
addressed by implementing
farewells and security routers.
➜Problems of high latency
period on WAN can be
addressed by taking high speed
internet connection

22. Thanks!