Computer Networks - Physical and Data Link Layer
Which of the following best describes the physical layer's role in data transmission?
Which of the following best describes the physical layer's role in data transmission?
easy📝 Factual Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand physical layer function
The physical layer encodes raw bits into electrical, optical, or radio signals for sending over the medium.Step 2: Exclude unrelated functions
Interpreting headers, encryption, and congestion control are tasks of higher layers.Final Answer:
Encoding bits into signals for transmission -> Option CQuick Check:
Physical layer = bit encoding and signaling [OK]
Quick Trick: Physical layer encodes bits into signals only [OK]
Common Mistakes:
MISTAKES- Mixing physical layer with network or transport layer roles
- Thinking physical layer handles encryption
- Assuming physical layer manages data packet details
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