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 are 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
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Answer Posted / guest
Answer: A
The previous day's backup 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 up to the point of interruption.
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