Computer Networks - Physical and Data Link Layer
In a communication system, why must the physical layer handle raw bit transmission instead of higher layers?
In a communication system, why must the physical layer handle raw bit transmission instead of higher layers?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand physical layer's unique role
The physical layer converts bits into electrical, optical, or radio signals that the medium can carry.Step 2: Clarify higher layers' roles
Higher layers handle data formatting, encryption, and routing but cannot directly send signals over the medium.Final Answer:
Because only the physical layer can convert bits into signals suitable for the transmission medium -> Option BQuick Check:
Physical layer = bit-to-signal conversion [OK]
Quick Trick: Only physical layer converts bits to signals [OK]
Common Mistakes:
MISTAKES- Thinking higher layers handle signal modulation
- Assuming encryption is physical layer's job
- Confusing physical layer with data link or network layers
Master "Physical and Data Link Layer" in Computer Networks
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Computer Networks Quizzes