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📝 Scrambling converting digital data to digital signals

📖 From Data Communication & Networks • 4. Digital Transmission • 24 questions available

Practice MCQs for Scrambling converting digital data to digital signals. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-31

7
Easy Questions
11
Medium Questions
6
Hard Questions

📝 Sample Questions

Q1. What is the primary purpose of a scrambling technique in digital communication?

🔹 A. To randomize the bit pattern and avoid long sequences of identical bits
🔹 B. To increase the bandwidth of the channel
🔹 C. To convert digital data into analog signals
🔹 D. To compress data for transmission

💡 Difficulty: easy | ✅ Correct: A

Q2. Which of the following statements accurately describes a self‑synchronizing scrambler?

🔹 A. It requires a separate clock channel
🔹 B. It can recover the original data without knowing the initial state of the shift register
🔹 C. It only works for binary phase‑shift keying
🔹 D. It adds redundancy to the transmitted data

💡 Difficulty: medium | ✅ Correct: B

Q3. Consider a self‑synchronizing scrambler with polynomial \(G(x)=x^5 + x^2 + 1\). If a burst error of length 3 occurs, what is the maximum possible length of the error burst after descrambling?

🔹 A. 3 bits
🔹 B. 5 bits
🔹 C. 7 bits
🔹 D. Unbounded

💡 Difficulty: hard | ✅ Correct: C

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🔗 Related Topics

📝 Line coding process of converting digital data to digital signals📝 Line Coding Schemes converting digital data to digital signals📝 Block Coding converting digital data to digital signals📝 Pulse Code Modulation(PCM) technique converting analog data to digital signals📝 Delta Modulation(DM) technique converting analog data to digital signals
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