The answer is Azure SQL Managed Instance with a failover group, because it uniquely combines near-100% SQL Server compatibility with built-in high availability and automatic failover to a secondary region, while fully supporting SQL Server Agent jobs, stored procedures, and functions. This service is designed for migrating legacy on-premises databases like your 2 TB workload, as it minimizes migration effort by preserving existing code and agent schedules without refactoring. On the Microsoft Azure Data Fundamentals DP-900 exam, this question tests your ability to distinguish between Azure SQL Database, which lacks SQL Server Agent support, and Azure SQL Managed Instance, which is the only PaaS option that offers both agent compatibility and geo-failover. A common trap is confusing elastic pools with high availability—pools manage multiple databases, not failover. Remember the memory tip: “Agent needs a Managed Instance; for failover, add a group.”
DP-900 Practice Question: Identify considerations for relational data on Azure
This DP-900 practice question tests your understanding of identify considerations for relational data on azure. 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.
Your company is migrating a legacy on-premises SQL Server database to Azure. The database is used by a mission-critical application that requires high availability with automatic failover to a secondary region. The database size is 2 TB and is expected to grow 20% annually. The application uses stored procedures, functions, and SQL Server Agent jobs. You need to select an Azure relational database service that meets the high availability requirements, supports the existing SQL Server features, and minimizes migration effort. What should you choose?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure SQL Managed Instance with failover group
Option C is correct because Azure SQL Managed Instance provides high availability with automatic failover, supports SQL Server Agent, and offers near 100% compatibility. Option A is wrong because Azure SQL Database does not support SQL Server Agent. Option B is wrong because Azure SQL Database elastic pools are for multiple databases, not high availability. Option D is wrong because Azure Database for SQL Server is not a recognized service.
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
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Azure SQL Managed Instance with failover group
Why this is correct
SQL Managed Instance supports SQL Server Agent, stored procedures, and provides automatic failover to a secondary region.
Related concept
Static NAT maps one inside address to one outside address.
✗
Azure Database for SQL Server (Hyperscale tier)
Why it's wrong here
Azure Database for SQL Server is not a valid Azure service name.
✗
Azure SQL Database (single database) with active geo-replication
Why it's wrong here
Azure SQL Database does not support SQL Server Agent jobs, so migration would require rework.
✗
Azure SQL Database elastic pool with geo-replication
Why it's wrong here
Elastic pools are for managing multiple databases with shared resources; they still lack SQL Server Agent support.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
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
How to think about this question
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.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
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
How this comes up in practice
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-900 question in full detail.
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-900 NAT questions on configuration and troubleshooting.
Identify considerations for relational data on Azure — This question tests Identify considerations for relational data on Azure — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Azure SQL Managed Instance with failover group — Option C is correct because Azure SQL Managed Instance provides high availability with automatic failover, supports SQL Server Agent, and offers near 100% compatibility. Option A is wrong because Azure SQL Database does not support SQL Server Agent. Option B is wrong because Azure SQL Database elastic pools are for multiple databases, not high availability. Option D is wrong because Azure Database for SQL Server is not a recognized service.
What should I do if I get this DP-900 question wrong?
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-900 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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