Basic Concept of Networking

• Data as payload
• Usually computer with computer communication
• Need transmission medium, sometimes in form of networks

Elements
Data Terminal Equipment
Data Communication Equipment
Protocols

Data Communication Equipment
Equipment for connecting between both worlds.
Computer
• High Speed
• Parallel
• Digital
• Short Distance

Beside,
Communication
• Low Speed
• Serial
• Analog
• Long Distance

Data Communication Equipment

• modem

• NIC

• hub

• switch

• Router