Systems Security Certified Practitioner – SSCP – Question1060

At which layer of ISO/OSI does the fiber optics work?

A. Network layer
B. Transport layer
C. Data link layer
D. Physical layer

Correct Answer: D

Explanation:

The Answer: Physical layer The Physical layer is responsible for the transmission of the data through the physical medium. This includes such things as cables. Fiber optics is a cabling mechanism which works at Physical layer of OSI model
All of the other answers are incorrect.
The following reference(s) were/was used to create this question: Shon Harris all in one -Chapter 7 (Cabling)