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Find the mistake in this description: "Wavelength Division Multiplexing is used to combine signals by assigning each user a unique time slot."

medium📝 Analysis Q7 of 15
Computer Networks - Physical and Data Link Layer
Find the mistake in this description: "Wavelength Division Multiplexing is used to combine signals by assigning each user a unique time slot."
AWDM assigns users unique frequencies
BWDM assigns unique codes, not time slots
CWDM uses different wavelengths, not time slots
DWDM uses frequency bands, not time slots
Step-by-Step Solution
Solution:

  1. Step 1: Recall WDM working principle

    WDM separates signals by different light wavelengths, not by time slots.

  2. Step 2: Identify incorrect part

    Assigning time slots is a feature of TDM, not WDM.

  3. Final Answer:

    WDM uses different wavelengths, not time slots -> Option C

  4. Quick Check:

    WDM = wavelengths, not time slots [OK]
Quick Trick: WDM uses wavelengths, TDM uses time slots [OK]
Common Mistakes:
MISTAKES
  • Mixing WDM with TDM
  • Confusing codes with wavelengths
  • Thinking WDM uses frequencies

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