IMPORTANCE OF NETWORK
Network enable
1) Sharing of device E.g.: Network printer
2) Sharing of information
3) Easy communication
4) Online shopping
5) Sim banking
6) Easy transfer of data through network device
TYPES OF NETWORK
1) LAN
2) WAN
3) MAN
4) INTERNET
5) INTRANET
HOME WORK
Mention and explain network device according to their respective types of network
i) Switch is a computer networking device that links network to the respective type of network used is LAN
ii) Bridge is a network device that connects multiple network devices (LAN).
iii) Fiber optic cable is a cable containing one or more optic fibers to their respective network (internet).
iv) Server is large computer that stores websites on internet
v) Hub is a device for connecting multiple Ethernet devices together and making them acts as a single network segment + (LAN).
vi) Router is a device that is connected to two or more data for different network. (WAN)
vii) Twisted cable: is a type of wiring in which two conductors of a single circuit are together (LAN, MAN, WAN internet , intranet)
viii) Coaxial cable is a type of cable that has an inner conductor surrounding by a tubular insulating layer, network. (LAN, WAN, MAN, Internet, Intranet)
ix) Repeater is a network device to regenerate or replicated a signal network used as (LAN, WAN, MAN, Internet, Intranet)
Explain 5 types of network
1) LAN – local – area network
2) WAN – Wide area network
3) MAN – Metropolitan area network
4) Internet – inter connected network world wide
5) Intranet – is the internal network of an organization which allows access to specific authorized users.
NETWORK TOPOLOGY
Is how device are connected in a given Network.
TYPES
1) Logical
2) Physical
THE ADVANTAGES OF NETWORKING
- Sharing of data
- Sharing of hardware e.g.; printer
- Easy transferring of data
- Easy communication
- Enable e- learning
- Enables e- commerce
- Exchange of information
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DISADVANTAGES OF NETWORKING
- Security of data
- Cost of installing nodes is very high
- If server fails all the nodes will be affected
- Virus attack
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TYPES OF NETWORK
- LAN – Local Area Network
- WAN – Wide Area Network
- MAN – Metropolitan Area Network
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Area Network or sometimes Small Area Network
- Intranet
- Internet
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LAN-(Local Area Network)
A LAN connects network device over a relatively short distance. A network office building, school, or home usually contains a few small LANS (perhaps one per room) and occasionally a LAN will span a group of nearly building. TCP/ IP net working LAN is often but not always implemented as a single IP sub-net.
MAN – (Metropolitan Area Network)
A large computer network which extends to a city or to large university campus is termed as metropolitan area network or MAN.
The purpose of MAN is to provide the link to the internet in the long run. A MAN usually in corporate a number of LANS to form a network. This large MANS backbone comprises of an optical fiber set up.
What is WAN?
As the name symbolizes Wide Area Network is a broad network whose communication is wider than the LAN, MAN, and CAN.
The application of WAN (Wide Area Network) is not limited to a room, building of specific vicinity. The basic purpose of WAN is to maintain a number of LAN network in order to increase the efficiency of the network.
Different LAN network are connected to establish a network which will enable the user of one location to communicate with the users present in the other location. Internet service provides usually help and guide to establish WAN (Wide Area Network) networks. However many large organizations develop their own private WANs
INTRANET
Is the internal network of an organization which allows access to specific authorized users
ADVANTAGES
1) Intranet is free because it does not involve phone links
2) Easier updating
DISADVANTAGE
1) Information cannot be shared outsides the local network
EXTRANET
Is a private network that extended to users outside the company usually via internet.
ADVANTAGES
1) Share of information between companies.
2) Collaboration with other companies
3) Communication between companies
4) Jointly develop and use training programs with other companies
DISADVANTAGES
1) Expensive to implement
2) Requires network security
INTERNET
Is an interconnected network worldwide.
ADVANTAGES
1) Sharing of information
2) Data can easily update
DISADVANTAGE
1) Security of data
2) Virus attack