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A learner states that the physical layer decodes the bit stream to extract meaningful information. What is incorrect about this claim?

medium📝 Analysis Q6 of 15
Computer Networks - Physical and Data Link Layer
A learner states that the physical layer decodes the bit stream to extract meaningful information. What is incorrect about this claim?
AThe physical layer only transmits bits and does not interpret their meaning
BThe physical layer encrypts bits before transmission
CThe physical layer manages routing of data packets
DThe physical layer performs error correction on bit streams
Step-by-Step Solution
Solution:
  1. Step 1: Identify physical layer functions

    The physical layer transmits raw bits as signals without decoding or interpreting them.
  2. Step 2: Recognize decoding is done at higher layers

    Decoding and extracting meaning happen at higher layers like the data link or application layer.
  3. Final Answer:

    The physical layer only transmits bits and does not interpret their meaning -> Option A
  4. Quick Check:

    Physical layer transmits bits, no decoding [OK]
Quick Trick: Physical layer transmits bits, no decoding [OK]
Common Mistakes:
MISTAKES
  • Thinking physical layer interprets or decodes data
  • Confusing physical layer with data link or network layers
  • Assuming physical layer performs encryption or error correction

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