10. Error Detection and Correction - Data Communication & Networks

📖 From Data Communication & Networks • 313 questions available

Practice MCQs for 10. Error Detection and Correction. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-31

Easy Questions

140

Medium Questions

Hard Questions

📝 Topics in this Chapter

📝 Sample Questions

Q1. Which of the following best defines a single-bit error?

🔹 A. Two or more bits changed

🔹 B. Exactly one bit changed from 0 to 1 or 1 to 0

🔹 C. No bits changed

🔹 D. All bits inverted

💡 Difficulty: easy | ✅ Correct: B

Q2. Given that burst errors affect a set of bits, which statement logically follows about the relationship between noise duration and the number of bits in error?

🔹 A. Longer noise always causes fewer bits errors

🔹 B. Shorter noise can cause more bits errors than longer noise

🔹 C. Number of bits corrupted is proportional to noise duration multiplied by data rate

🔹 D. Noise duration does not influence error count

💡 Difficulty: medium | ✅ Correct: C

Q3. A transmission uses a 7-bit data unit with 3 redundant bits for error detection. What is the minimum number of bits that must be checked to guarantee detection of any single-bit error?

🔹 A. 7

🔹 B. 3

🔹 C. 10

🔹 D. 1

💡 Difficulty: hard | ✅ Correct: C

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