The answer is to deploy an Azure SQL Managed Instance in a failover group with a secondary in another region. This configuration is correct because a failover group provides continuous, synchronous data replication to a secondary instance, enabling a controlled cutover with minimal downtime and near-zero data loss during migration of a 2.5 TB database. Azure SQL Managed Instance natively supports database mail and SQL Agent jobs, so no re-architecture is needed, and the 2.5 TB size is well within its storage limits. On the DP-300 exam, this scenario tests your understanding of high-availability architectures for large-scale migrations, where the common trap is choosing a single-instance deployment or a basic availability group, which lack automatic failover across regions. Remember the key: for a large database requiring automatic failover and minimal downtime, think “failover group” for both migration and ongoing HA. A useful memory tip is “Failover for fail-safe migration”—the group handles both the move and the high availability.
DP-300 Plan and implement data platform resources Practice Question
This DP-300 practice question tests your understanding of plan and implement data platform resources. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
You are a database administrator for a large financial services company. The company is migrating its on-premises SQL Server databases to Azure SQL Managed Instance. One of the databases, FinanceDB, is 2.5 TB in size and runs a critical application that requires high availability with automatic failover. The application uses database mail and SQL Agent jobs. During migration, you need to minimize downtime. Which deployment option should you choose?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Deploy an Azure SQL Managed Instance in a failover group with a secondary in another region
Option D is correct because Azure SQL Managed Instance supports database mail and SQL Agent jobs natively, and deploying it in a failover group with a secondary in another region provides automatic failover and high availability while minimizing downtime during migration. The 2.5 TB size is within Managed Instance limits, and the failover group enables a controlled, continuous-sync replication to the secondary, allowing a swift cutover with minimal data loss.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Deploy an Azure SQL Database Hyperscale with geo-replication
Why it's wrong here
Hyperscale does not support SQL Agent.
✗
Deploy an Azure SQL Managed Instance with zone-redundant configuration
Why it's wrong here
Zone redundancy provides HA within a region but not automatic failover for DR.
✗
Deploy a single Azure SQL Database with Active Geo-Replication
Why it's wrong here
Single database does not support SQL Agent or database mail.
✓
Deploy an Azure SQL Managed Instance in a failover group with a secondary in another region
Why this is correct
Failover group provides automatic failover, supports all required features, and allows minimal downtime migration.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse Azure SQL Database with Azure SQL Managed Instance, overlooking that database mail and SQL Agent jobs are only supported in Managed Instance, not in single databases or Hyperscale.
Detailed technical explanation
How to think about this question
Azure SQL Managed Instance failover groups use the Availability Group technology under the hood, with synchronous replication at the secondary region to ensure zero data loss during planned failover (RPO=0) and automatic failover with a typical RTO of under 1 hour. The migration can leverage a distributed availability group or log replay service to keep the secondary in sync with minimal downtime, and the failover group handles DNS updates transparently for the application connection string.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-300 question in full detail.
Plan and implement data platform resources — This question tests Plan and implement data platform resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Deploy an Azure SQL Managed Instance in a failover group with a secondary in another region — Option D is correct because Azure SQL Managed Instance supports database mail and SQL Agent jobs natively, and deploying it in a failover group with a secondary in another region provides automatic failover and high availability while minimizing downtime during migration. The 2.5 TB size is within Managed Instance limits, and the failover group enables a controlled, continuous-sync replication to the secondary, allowing a swift cutover with minimal data loss.
What should I do if I get this DP-300 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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