Question

A standard such as 100BASE-T is defined at which two OSI layers? (select TWO)

Answer 1

Answer:

A standard such as 100BASE-T is defined at  the physical OSI layers. In the question it is stated to select two. But there are no options given. Thus based on the information available it is the physical layer as the answer to the question. Had there been any option given it would be possible to choose. But in the absence of option it is not possible.