A computer network connects various computers and devices using transmission media like cables or wireless connectivity. It allows for sharing of resources like hardware, files, applications and access to services such as email and video conferencing. The basic elements required for a computer network include end devices to communicate, connecting devices such as switches and routers, a transmission medium, protocols to govern information transfer and messages containing the data being shared across the network.

1. What is A Computer
Network?

2. Definition of a Computer Network
▪A group of computers (hosts/nodes)
and computer peripherals connected
via a transmission media and
connecting devices

3. Computer Types
▪Personal Computers (PCs)
▪ Desktop Computer
▪Laptops
▪Tablets
▪Smart Mobile Phones
▪Embedded Systems in Machines
▪ Internet of Things (IoT)

4. Computer Peripherals
▪Hardware connected to computer
▪ Printers
▪ Scanners
▪ Storage Media
▪Cloud Computing and Data Center
▪ Servers
▪ Storage Devices
▪ Managing Terminals
▪ Offers several types of services

5. Transmission Media
▪Wired (Cables)
▪ Copper
▪ Coaxial Cables
▪ Twisted Pair Cables (Shielded/Unshielded)
▪ Fiber Optic
▪ Single Mode
▪ Multi-Mode
▪Wireless
▪ Air as Transmission Media
▪ Frequency Band
▪ Area of Coverage

6. Network Benefits and Services
▪Resources Sharing
▪ Hardware Resources
▪ Computer Peripherals
▪ Storage Media
▪ Processors
▪ Software Resources
▪ File Sharing
▪ Databases
▪ Applications
▪Services
▪ Browsing and E-mail
▪ Voice Calls and Video Conferences

7. Basic Network Elements
▪End Devices
▪ Communicating with each other (Send/Receive)
▪Connecting Devices
▪ Switches, Routers, and Access Points
▪Medium
▪ How devices connected?
▪Messages
▪ Information travelling through network
▪Protocols
▪ Rules governing information transfer

8. Thank you
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