Quick Answer

The correct answer is the Azure Backup GFS policy because it is the only Azure-native solution that supports the Grandfather-Father-Son retention model, enabling distinct retention periods for daily (30 days), weekly (12 weeks), monthly (12 months), and yearly (7 years) backups within a single policy. This GFS approach maps directly to the company’s requirement to protect VMs from accidental deletion or corruption across multiple time horizons, which a simple daily or monthly policy cannot accommodate due to their single-tier retention limits. On the AZ-305 exam, this scenario tests your understanding of Azure Backup’s recovery services vault and its ability to implement complex compliance-driven retention schedules, often appearing as a distractor where candidates mistakenly choose the Enhanced policy (reserved for SQL Server) or a basic daily policy. A common trap is assuming a single retention tier can cover all needs; instead, remember that GFS stands for Grandfather (yearly), Father (monthly), and Son (daily/weekly). For a quick memory tip, think of the GFS acronym as “Go Far with Schedules” to recall that only this policy supports multi-tier, long-term retention for Azure VM backups.