ISC2 Systems Security Certified Practitioner (SSCP) Practice Question
A mid-size insurer performs a nightly full backup at 02:00 and incremental backups every hour. After a recent outage, the CIO sets an RPO of 30 minutes for the claims database. Which change to the backup strategy best meets the new RPO while controlling storage and network costs?
Increase incremental backup frequency to every 15 minutes during business hours.
Enable synchronous replication of the database to a hot site.
Add differential backups every 30 minutes throughout the day.
Replace hourly incrementals with a second nightly full backup at 12:00.
The restore point objective (RPO) defines the maximum amount of data, measured in time, that the organization can afford to lose. To satisfy a 30-minute RPO, a backup or replica of the data must exist that is no more than 30 minutes old at any time. Raising the frequency of existing incremental backups to every 15 minutes provides recovery points within the required window while adding only small incremental data volumes. Differential backups grow larger with each run, synchronous replication requires substantially higher bandwidth and licensing costs, and a second daily full backup still allows many hours of potential data loss. Therefore, more frequent incremental backups are the most cost-effective way to meet the new RPO.
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ISC2 Systems Security Certified Practitioner (SSCP)
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