Domain 2.1: Relational Data Storage — AZ-305 Practice Question 22

How to approach this question

Match 'datacenter outage' to Availability Zones. Match 'RPO=0' to synchronous replication (Zone-redundant HA).

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B.Zone-redundant High Availability✓ Correct

Zone-redundant High Availability

Azure Database for PostgreSQL Flexible Server supports Zone-redundant High Availability. This configuration provisions a primary server in one Availability Zone and a standby server in another. Data is synchronously replicated to the standby, ensuring zero data loss (RPO=0). If the primary zone goes down, it automatically fails over to the standby.

Common mistakes

Confusing Geo-redundancy (cross-region, asynchronous, RPO>0) with Zone-redundancy (cross-datacenter, synchronous, RPO=0).

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Common mistakes

Practice the full Azure Solutions Architect Expert AZ-305 Practice Exam 4

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