CompTIA Exam Questions

Which of the following is MOST likely the cause?

An ultra-DMA 100 drive is attached to a system and working but wont run in ultra-DMA 100 mode. Which of the following is MOST likely the cause?

A.
The operating system does not support this mode.

B.
The cable is too long for this mode.

C.
An 80-conductor cable is not being used.

D.
The jumpers arent configured correctly.