1. What is a network?
A network consists of two or more entities, or objects, sharing resources and information.
In a basic sense, sharing (giving or getting) is a fundamental aspect of networking.

2. Why do we need network? To share To save time and money Resources
Hardware devices
Software programs
To save time and money
Data
Information

3. Family Network

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5. What is a Computer Network?1
What is a Computer Network?
A computer network is a system in which multiple computers are connected to each other to share information and resources.

6. Communications Device
What is a Computer network?
Collection of computers and devices connected together
Communications Device
Communications Media
Cables
Satellites
Enables a connection between computers
Cellular radio
Telephone lines
One type is a modem

7. 1
A Simple Network

8. Characteristics of a computer network1
Characteristics of a computer network
Share Resources from one computer to another
Create files and store them in one computer, access those files from the other computer(s) connected over the network
Connect a printer, scanner, or a fax machine to one computer within the network and let other computers of the network use the machines available over network.

9. Advantages of a Computer Network.1
Advantages of a Computer Network.

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11. Internal Network Cards External Network Cards1
Following is the list of hardware's required to setup a computer network.
Network Cables
Distributors
Routers
Internal Network Cards
External Network Cards

12. Basic Components of a Network
Server:
In computer networking, a server is a computer designed to process requests and deliver data to other (client) computers over a local network or the Internet.

13. Basic Components of a Network
Workstation:
A typical workstation is a computer that is configured with a network interface card, networking software and the appropriate cables.

14. Basic Components of a Network
Hub:
Hub is a device that splits a network connection into multiple computers. It is like a distribution center.

15. Transmission Channels
Computer in a network is interconnected through transmission channels.
These channels can be wired(cables) and wireless(satellites).

16. Computer Network Types
PAN:A personal area network (PAN) is a computer network used for data transmission amongst devices such as computers, telephones, tablets and personal digital assistants.

17. LAN:
- LAN networks connect computers together over relatively small distances, such as within a single building or within a small group of buildings.

18. WAN:
- WAN networks connect computers together over large physical distances.

19. MAN:
- This is a network which is larger than a LAN but smaller than a WAN, and incorporates elements of both. It typically spans a town or city and is owned by a single person or company, such as a local council or a large company.