56. The register which holds the address of the location to or from which data are to be transferred is known as A.index register B.instruction register C.memory address register D.memory data register E.None of the above
68. Which of the following is not true of a magnetic disk? A.It is expensive relative to magnetic tape B.It provides only sequential access to stored data C.Users can easily update records by writing over the old data D.It does not provide an automatic audit trail E.All of the above are true
