Quick Answer
The correct answer is to enable zone-redundant configuration. This feature minimizes downtime during planned patching by replicating your Azure SQL Database across multiple availability zones within the same region, ensuring that if one zone undergoes patching, another zone seamlessly handles the workload with no data loss. On the DP-300 exam, this question tests your understanding of high availability versus disaster recovery—a common trap is confusing zone redundancy with geo-replication, which is designed for regional outages, not planned maintenance. Remember, zone-redundant configuration is built into the General Purpose tier and provides a 99.995% SLA, while read scale-out only offloads read traffic and auto-failover groups require geo-replication. Memory tip: think "zones for zero downtime during patching" to distinguish from geo-replication's "geo for global disasters."
This DP-300 practice question tests your understanding of plan and configure a high availability and disaster recovery environment. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Your company uses Azure SQL Database in a General Purpose service tier. You need to minimize downtime during a planned patching event. Which feature should you enable?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Auto-failover group
Why wrong: For geo-failover, not for planned patching.
Read scale-out
Why wrong: Offloads read workloads, does not reduce patching downtime.
Active geo-replication
Why wrong: Used for disaster recovery, not for patching.
Zone-redundant configuration
Provides high availability across zones, minimizing patching downtime.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Zone-redundant configuration
Option B is correct because zone-redundant configuration for Azure SQL Database provides high availability by replicating across zones, reducing downtime during patching. Option A is incorrect because geo-replication is for disaster recovery. Option C is incorrect because auto-failover groups require geo-replication. Option D is incorrect because read scale-out only offloads read workloads.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Auto-failover group
Why it's wrong here
For geo-failover, not for planned patching.
Read scale-out
Why it's wrong here
Offloads read workloads, does not reduce patching downtime.
Active geo-replication
Why it's wrong here
Used for disaster recovery, not for patching.
Zone-redundant configuration
Why this is correct
Provides high availability across zones, minimizing patching downtime.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DP-300 NAT questions on configuration and troubleshooting.
Plan and configure a high availability and disaster recovery environment — study guide chapter
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FAQ
Plan and configure a high availability and disaster recovery environment — This question tests Plan and configure a high availability and disaster recovery environment — Static NAT maps one inside address to one outside address..
The correct answer is: Zone-redundant configuration — Option B is correct because zone-redundant configuration for Azure SQL Database provides high availability by replicating across zones, reducing downtime during patching. Option A is incorrect because geo-replication is for disaster recovery. Option C is incorrect because auto-failover groups require geo-replication. Option D is incorrect because read scale-out only offloads read workloads.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DP-300 NAT questions on configuration and troubleshooting.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 21, 2026
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