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📝 Concept of Checksum Error Detecting Technique

📖 From Data Communication & Networks • 10. Error Detection and Correction • 20 questions available

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

🔄 Last updated: 2026-07-31

6
Easy Questions
9
Medium Questions
5
Hard Questions

📝 Sample Questions

Q1. If a generator polynomial includes the factor \(x+1\), which type of errors is guaranteed to be detected?

🔹 A. All odd-numbered errors
🔹 B. All even-numbered errors
🔹 C. All burst errors length \(\le r\)
🔹 D. All errors

💡 Difficulty: easy | ✅ Correct: A

Q2. Suppose two isolated errors are exactly four bits apart. Which statement about detection by the generator \(g(x)=x^{14}+x^{3}+1\) is true?

🔹 A. Always detected
🔹 B. Detected only if distance < r
🔹 C. Detected only if distance > r
🔹 D. Undetected if distance exactly 4

💡 Difficulty: medium | ✅ Correct: D

Q3. For \(r=14\), what is the probability that a burst error of length \(L=r+1\) goes undetected?

🔹 A. \((1/2)^{14}\)
🔹 B. \((1/2)^{13}\)
🔹 C. \((1/2)^{15}\)
🔹 D. \((1/2)^{12}\)

💡 Difficulty: hard | ✅ Correct: B

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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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