Data Communication

What is Data Communication:

• Message: The information (data) to be communicated. It can be text, numbers, pictures, audio, or video.
• Sender: The device that sends the data message.
• Receiver: The device that receives the data message.
• Transmission Medium: The physical path by which a message travels from sender to receiver. Examples include twisted-pair wire, coaxial cable, fiber-optic cable, and radio waves.
• Protocol: A set of rules that governs data communication. It represents an agreement between the communicating devices. Without a protocol, two devices may be connected but not communicating.