These slides contain the advantages and disadvantages of the types of computer networks. These computer networks are: Personal Area Network, Metropolitan Area Network, Local Area Network and Wide Area Network.

1. NAME: ENIMIL KWEKU BOATENG
COURSE: ELECTIVE ICT
TOPIC: TYPES OF COMPUTER NETWORKS 2
EMAIL: KWEKUBOATENG38@GMAIL.COM
WEB: HTTP://ENIMIL.GREAT-SITE.NET

2. Lesson quote
If you're walking down the right path and you're willing
to keep walking, eventually you'll make progress.
Barack Obama

3. LESSON OBJECTIVES
At the end of this lesson, the student should be able to:
State and explain the advantages of the types of
computer networks.
State and explain the disadvantages of the types of
computer networks.

4. Advantages of personal area network
It is good for short range communication
It does not require huge or extra space to setup
It can connect to many devices at a time
It is portable and reliable
It is easy to use and secure

5. disadvantages of personal area network
Data transfer rate is slow
It covers a very short distance in communication
It is vulnerable to interferences like radio signals

6. advantages of local area network
It is easy to manage and control local area network since it is
limited geographically
It is easy to share common resources like printers, scanners,
hard disks, etc., among users in a local area network
It is easy to share off-the-shelf or customised software
applications among users in a local area network
Communication on a local area network is easy and fast as
there are Ethernet cables that support varied data transfer rate
from 10/100Mbps through to 10Gbps from Cat5 to Cat7 Ethernet
cables.

7. disadvantages of local area network
Local area network is limited in size since it covers a small geographical
area
Initial setup costs of installing local area network is high because you
need to purchase hardware devices, Ethernet cables and software
applications
It is difficult to setup and maintain local area network as it requires
skilled technicians and network administrators
All users are affected in a typical server based local area network if the
server develops some faults
It is easy to spread malware in a local area network

8. advantages of metropolitan area network
It is extremely efficient and provides fast communication
through high-speed transmission media like fibre optic cables
It provides a good back bone for large networks and provides
greater access to wide area networks
The dual bus used in metropolitan area network helps the
transmission of data in both directions simultaneously
It serves many cities and towns and this makes it possible to
connect large areas at a relatively low cost

9. disadvantages of metropolitan area network
It covers a geographical area wider than local area network but
lesser than wide area network
It is an interconnection of local area networks
It is controlled or owned by a user group or an Internet service
provider (ISP) who sell services to users
There is moderate to high data rates
It helps in the sharing of resources across cities
Metropolitan area network provides uplinks for connecting
local area networks to wide area networks and the Internet

10. advantages of wide area network
It covers a large geographical area
Like local area network, it allows sharing of resources and
software applications among users
In wide area network, users have latest files because
software files are shared among all users
Data and information are stored on a centralised server
making it accessible across the globe.

11. disadvantages of wide area network
It needs a good firewall to restrict outsiders from entering and
disrupting the network
It is expensive to setup aWAN. It can be slow and complicated,
In fact the bigger the network the more expensive it is
Once set up, maintaining a network is a full-time job which
requires network administrators and technicians to be employed
Security is a real issue when many different people have the
ability to use information from other computers. Protection
against hackers and viruses adds more complexity and expenses.

12. Try thy hands on
1. State four advantages of the following:
I. Personal area network
II.Wide area network
III. Local area network
2. State three disadvantages of the following:
I. Metropolitan area network
II.Wide area network
III. Local area network

13. Thanks 4 watching
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