Solution

The correct answer is A - IV, B - I, C - II, D - III

Key Points

• A. NRZ-L
  • NRZ-L (Non-Return-to-Zero Level) is a line coding scheme where the signal level does not return to zero between bits.
  • It has a bandwidth of B = N/2.
  • Correct match: IV. B = N/2
• B. 2 B1Q
  • 2B1Q (2 Binary 1 Quaternary) is a line coding scheme where two binary bits are represented by one quaternary symbol.
  • It has a bandwidth of B = N/4.
  • Correct match: I. B = N/4
• C. 4.D-PAM 5
  • 4.D-PAM5 (4 Dimensional 5-level Pulse Amplitude Modulation) is a line coding scheme used in high-speed data transmission.
  • It has a bandwidth of B = N/8.
  • Correct match: II. B = N/8
• D. MLT-3
  • MLT-3 (Multi-Level Transmit-3) is a line coding scheme that uses three voltage levels.
  • It has a bandwidth of B = N/3.
  • Correct match: III. B = N/3

Therefore, the correct answer is: A - IV, B - I, C - II, D - III