Correct Answer: A
Explanation/Reference:
Explanation:
On-site mirroring is a transaction redundancy solution.
Incorrect Answers:
B: Electronic vaulting is one type of transaction redundancy solution. Electronic vaulting makes copies of files as they are modified and periodically transmits them to an offsite backup site.
C: Remote journaling is one type of transaction redundancy solution. Remote journaling is a method of transmitting data offsite. It usually only includes moving the journal or transaction logs to the offsite facility, not the actual files. These logs contain the deltas (changes) that have taken place to the individual files. If and when data are corrupted and need to be restored, the bank can retrieve these logs, which are used to rebuild the lost data.
D: Database Shadowing is one type of transaction redundancy solution. It is a mirroring technology used in databases, in which information is written to at least two hard drives for the purpose of redundancy.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 938-939