Which layer of the OSI model converts digital bits into electrical, optical, or radio signals?
Options
A.
Physical Layer
B.
Network Layer
C.
Session Layer
D.
More than one of the above
E.
None of the above
Correct Answer (Detailed Explanation is Below)
A.
Physical Layer
Detailed Explanation
Explanation: The Physical Layer (Layer 1) transmits raw bits over a physical medium by defining electrical, optical, mechanical, and radio signal characteristics.