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Questions and Answers
Which characteristic of data communication focuses on ensuring that data is received by the intended recipient?
What is the term used to describe the variation in the packet arrival time during data transmission?
Which of the following is NOT a component of a data communication system?
In data representation, which of the following forms is NOT typically recognized?
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Which fundamental characteristic of data communication allows for the immediate delivery of audio and video data?
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Which type of data flow allows simultaneous sending and receiving of data?
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What is a key characteristic of a Local Area Network (LAN)?
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Which of the following is NOT a requirement for computer networks as stated in the content?
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What is the range of a Metropolitan Area Network (MAN)?
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What defines a protocol in data communication?
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Study Notes
Data Communication
- Data refers to collected facts, while information is processed data used for decision making.
- Data communications involve the exchange of data between devices using transmission mediums like wires.
Data Communication Characteristics
- Delivery: Data must reach the correct destination and user.
- Accuracy: Data transmission should be error-free, ensuring data integrity.
- Timeliness: Timely delivery is crucial for real-time data, like audio and video.
- Jitter: Variation in packet arrival time, affecting the timeliness of data transmission.
Data Communication System Components
- Sender: Device originating the data.
- Receiver: Device receiving the data.
- Message: Data transmitted between sender and receiver.
- Protocols: Rules governing communication.
- Medium: Transmission path, either wired or wireless.
Data Representation
- Data can be represented in various forms, including text, numbers, images, audio, and video.
Data Flow
- Simplex: One-directional communication (either sending or receiving).
- Half-duplex: Communication in both directions but not simultaneously.
- Full-duplex: Simultaneous sending and receiving of data.
Networks
- Networks are interconnected devices (nodes) connected by communication links.
- Nodes can be computers, printers, or any devices capable of sending and receiving data.
Network Criteria
- Reliability: Ensures reliable data communication.
- Security: Protects data from unauthorized access.
- Performance: Achieves high throughput and low latency.
Network Categories
- Local Area Network (LAN): Limited to a small geographic area, often within a building or office.
- Wide Area Network (WAN): Spans a large geographic area, connecting networks across cities, states, or countries.
- Metropolitan Area Network (MAN): Covers a city-wide area, larger than a LAN but smaller than a WAN.
Protocol
- Protocols are sets of rules that govern data communication.
- They define what, how, and when data will be communicated.
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Description
This quiz explores the fundamental concepts of data communication, including the characteristics and components of data communication systems. Understand how data is transmitted and represented, along with the importance of delivery and accuracy in this field.
