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1. Explain the concept of error detection and error correction in data communication systems. Discuss the importance of error correction techniques. 2. Compare and contrast

1. Explain the concept of error detection and error correction in data communication  systems. Discuss the importance of error correction techniques.

2. Compare and contrast the error detection and error correction mechanisms. Provide  examples of each and discuss their applications in modern communication systems.

3. Explain parity Check with suitable examples. Discuss the advantages and limitations  of parity check in error detection.

4. Define linear block codes and provide examples. Explain the properties that make a  block code linear.

5. Define checksum and explain its role in error detection with suitable examples.

6. Explain the concept of automatic repeat request (ARQ) in error control. How does  ARQ ensure error-free data transmission?

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