As updates to an online order entry system are processed, the updates are recorded on a transaction tape and
a hard copy transaction log. At the end of the day, the order entry files are backed up on tape. During the
backup procedure, a drive malfunctions and the order entry files are lost. Which of the following is necessary to
restore these files?

A.
The previous day’s backup file and the current transaction tape

B.
The previous day’s transaction file and the current transaction tape

C.
The current transaction tape and the current hard copy transaction log

D.
The current hard copy transaction log and the previous day’s transaction file

Explanation:
The previous day’s backup file will be the most current historical backup of activity in the system. The current
day’s transaction file will contain all of the day’s activity. Therefore, the combination of these two files will enable
full recovery upto the point of interruption.