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📝 Checksum Error Detecting Technique

📖 From Data Communication & Networks • 10. Error Detection and Correction • 14 questions available

Practice MCQs for Checksum Error Detecting Technique. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-31

4
Easy Questions
6
Medium Questions
4
Hard Questions

📝 Sample Questions

Q1. What is the primary purpose of a checksum in network communication?

🔹 A. To detect errors in transmitted data
🔹 B. To encrypt the data
🔹 C. To compress the data
🔹 D. To route packets

💡 Difficulty: easy | ✅ Correct: A

Q2. A sender transmits three 8‑bit data words [0xAB, 0x34, 0xFF] with a checksum of 0x58. If the checksum bit pattern is altered to 0x59 during transmission, what will the receiver’s final sum be after adding all words and the received checksum?

🔹 A. 0x00 (all zeros)
🔹 B. 1
🔹 C. 255
🔹 D. 89

💡 Difficulty: medium | ✅ Correct: B

Q3. Inserting the checksum in the middle of a message rather than appending it at the end can affect detection of burst errors. Which placement offers better protection against a burst error that spans the checksum field?

🔹 A. Middle insertion
🔹 B. Appending at the end
🔹 C. Both are equivalent
🔹 D. Neither provides protection

💡 Difficulty: hard | ✅ Correct: A

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🔗 Related Topics

📝 Types of Errors in Data Link Layer📝 Redundancy error detecting and correcting📝 Error Detection versus Correction in Data Link Layer📝 Redundancy hrough Coding📝 Block Coding in Data Link Layer
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