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Questions and Answers
What are the five components of a data communications system?
What are the five components of a data communications system?
- Network router
- Sender (correct)
- Message (correct)
- Protocol software (correct)
The exchange of data between two devices via some form of transmission medium is known as _____ communication.
The exchange of data between two devices via some form of transmission medium is known as _____ communication.
data
Data communication depends on six characteristics.
Data communication depends on six characteristics.
False (B)
In what forms can information today come?
In what forms can information today come?
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Which of the following is NOT a characteristic of data communication?
Which of the following is NOT a characteristic of data communication?
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Study Notes
Data Communications
- Data communication is the exchange of information between two devices using transmission media.
- Four key characteristics of data communications are delivery, accuracy, timeliness, and jitter.
Components of Data Communications
- Data communications systems have five components:
- Message: Information transmitted in various forms, such as text, numbers, images, audio, and video.
- Sender: Device that originates the message.
- Receiver: Device that receives the message.
- Transmission Medium: Physical path through which the message travels (e.g., cables, wireless signals).
- Protocol: Set of rules that govern data exchange format, timing, and error control.
Representation of Data
- Text: Represented using Unicode (a character encoding standard).
- Numbers: Represented in binary form.
- Images: Represented using bit patterns, typically utilizing the RGB (Red, Green, Blue) or YCM (Yellow, Cyan, Magenta) color models.
- Audio: Recorded or transmitted as analog or digital signals.
- Video: Consists of continuous images or a combination of images.
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