2. Topic:
Types of Computer Network
Presenter: Shahbaz Ahmad 2017-122
Umaima Zahra 2017-110
Kanza Shoaib 2017-121
M.Ed Secondary 2017-2018
Institute Education and Research , Punjab
University Lahore
3. Content
What is network
Components of computer network
Network benefits
Disadvantages of computer network
Types of Network
Conclusion
5. Network
A computer network is defined as the interconnection of two or
more computers.
It is done to enable the computers to communicate and share
available resources.
Networks can be classified by the geographical area they cover
Allows communication and collaboration between users
6. COMPONENTS OF COMPUTER NETWORK
Two or more computers
Cables as links between the computers
A network interfacing card(NIC) on each
computer
Switches
Software called operating system(OS)
10. Types of Networks
LAN (Local area Network )
MAN (Metropolitan Area Network )
WAN (Wide Area Network )
11. LOCAL AREA NETWORK(LAN)
LAN is a network which is designed to operate over a
small physical area such as an office, factory or a group
of buildings.
LAN’s are easy to design and troubleshoot
Exchange of information and sharing of resources
becomes easy because of LAN.
12. LOCAL AREA NETWORK(LAN)
In LAN all machines are connected to a
single cable.
Different types of topologies such as star,
tree, bus, ring, etc. Can be used
It is usually a privately owned network.
13.
14. Advantages of LAN
LAN allow sharing of expensive resources such as laser printers
and high-capacity , high speed mass storage devices among a
number of users.
LAN allows high speed exchange of essential information between
key people in an organization.
If properly managed, this will provide greater efficiency and
productivity.
Through LAN, one can store all critical data at a central place
15. Disadvantages of LAN
LAN software requires memory space in each of the computers
used on the network
LAN adds another level of complexity to the computer operation.
Some control on the part of a user is lost.
LAN has security problems.
Some types of security system must be implemented for protecting
data.
16. Metropolitan Area Network
It is in between LAN & WAN technology that covers the
entire city.
It uses similar technology as LAN.
It can be a single network such as cable TV network, or
a measure of connecting a number of LAN’s o a large
network so that resources can be shared LAN to LAN as
well as device to device.
17. Metropolitan Area Network
Large network that connects different organizations
Shares regional resources
Branch offices are connected to head offices
through MANs.
It may be a single network such as cable television
network available in many cities.
18.
19. Advantages of MAN
Extremely efficient and provide fast communication via high-speed
carriers, such as fibre optic cables.
It provides a good back bone for large network and provides greater
access to WANs.
The dual bus used in MAN helps the transmission of data in both
directions simultaneously.
A MAN usually encompasses several blocks of a city or an entire city.
20. Disadvantages of MAN
More cable required for a MAN connection from one place to
another.
It is difficult to make the system secure from hackers
It requires more cables for connection from one place to the
other compare to LAN.
Network installation requires skilled technicians and network
administrators
21. Wide Area Network
Network that covers large geographic area using many
types of media
Internet is world’s largest WAN
WAN with a very large geographical area for instant a
country or even beyond the border
Also called “enterprise networks” if they are privately
owned by a large company
22.
23. Advantages of WAN
WAN covers larger geographical area.
The software files are shared among all the users. Hence all
will have access to latest files.
Organizations can form their global integrated network
through WAN
24. Disadvantages of WAN
Initial investment costs are higher
It is difficult to maintain the network. It requires skilled
technicians and network administrators.
There are more errors and issues due to wide coverage
and use of different technologies.
It has lower security compare to LAN and MAN due to
wider coverage
26. Conclusion
In the new era of computer and networking
system it can’t be ignored that Without network
system life becomes so difficult.
Again it plays an vital role in the field of
modern IT.
So we should use it a proper and safe way.