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📝 Multiplexing techniques and its role in Physical Layer

📖 From Data Communication & Networks • 6. Multiplexing and Spectrum Spreading • 15 questions available

Practice MCQs for Multiplexing techniques and its role in Physical Layer. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-31

3
Easy Questions
7
Medium Questions
5
Hard Questions

📝 Sample Questions

Q1. Which of the following best defines multiplexing in data communications?

🔹 A. Combining multiple signals into one transmission medium to share bandwidth.
🔹 B. Increasing the transmission speed of a single signal.
🔹 C. Dividing a signal into smaller packets for error correction.
🔹 D. Encrypting data before transmission.

💡 Difficulty: easy | ✅ Correct: A

Q2. A network requires simultaneous transmission of voice (64 kbps) and video (4 Mbps) over a single link with 5 Mbps capacity. Which multiplexing method is most appropriate?

🔹 A. Frequency Division Multiplexing (FDM)
🔹 B. Time Division Multiplexing (TDM)
🔹 C. Code Division Multiple Access (CDMA)
🔹 D. Statistical Multiplexing

💡 Difficulty: medium | ✅ Correct: D

Q3. In Code Division Multiple Access (CDMA), orthogonal codes separate users. If two users transmit with codes that are not perfectly orthogonal, what is the likely effect?

🔹 A. Increased signal‑to‑noise ratio
🔹 B. Inter‑user interference
🔹 C. Reduced bandwidth usage
🔹 D. Higher data rate

💡 Difficulty: hard | ✅ Correct: B

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🔗 Related Topics

📝 Frequency Division Multiplexing Analog Technique📝 Wavelength Division Multiplexing Technique📝 Time Division Multiplexing Technique📝 Spread Spectrum (SS) in Physical Layer📝 Frequency Hopping Spread Spectrum Technique
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