An exact duplicate of the entire contents of a hard diskdrive is known as a(n) .________________

Both disks and main memory support direct access to any desired location (page). On average, main memory accesses are faster, of course. What is the other important difference between the two (from the perspective of the time required to access a desired page)?

The disk idea helps cut down on wasted time due to rotational delay by using staggered addressing.

Fill in the blank question: Q. DDS stands for Digital _______________ Storage.