While designing the business continuity plan (BCP) for an
airline reservation system, the MOST appropriate method of
data transfer/back up at an offsite location would be:
A. shadow file processing.
B. electronic vaulting.
C. hard-disk mirroring.
D. hot-site provisioning.
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Answer: A
In shadow file processing exact duplicates of the files are
maintained at the same site or at a remote site. The two
files are processed concurrently. This is used for critical
data files, such as airline booking systems. Electronic
vaulting electronically transmits data either to direct
access storage, an optical disc or any other storage medium.
This is a method used by banks. Hard-disk mirroring provides
redundancy in case the primary hard disk fails. All
transactions and operations are done on two hard disks in
the same server. A hot site is an alternate site ready to
take over business operations within a few hours of any
business interruption and is not a method for backing up data.
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