Plan and configure a high availability and disaster recovery environment →hardMultiple ChoiceObjective-mapped
DP-300 Practice Question: Plan and configure a high availability and disaster recovery environment
Your Azure SQL Database is configured with active geo-replication to a secondary region. The primary region experiences a complete outage. You initiate a manual failover to the secondary. Users report that some client applications are failing to connect. What is the most likely cause?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Client applications are using the old connection string pointing to the primary server.
After a manual failover in active geo-replication, the secondary becomes the new primary. Client applications that were connecting to the original primary server will have connection strings pointing to that original server's endpoint. Unless the clients update their connection strings to point to the new primary server (the former secondary), they will fail to connect. Option A is incorrect because geo-replication does not require VPN; the secondary database is accessible over the internet. Option B is incorrect because the secondary database is already provisioned and kept in sync, ready for failover. Option C is incorrect because the server name does not automatically change; the secondary server has its own name, and after failover, the connection string must be updated to that name.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The secondary server is behind a VPN that clients cannot access.
Why it's wrong here
Geo-replication does not require VPN.
- ✗
The secondary database is not fully provisioned yet.
Why it's wrong here
The secondary database is fully provisioned before failover.
- ✗
The server name changed after failover and DNS is not updated.
Why it's wrong here
The server name remains the same; only the role changes.
- ✓
Client applications are using the old connection string pointing to the primary server.
Why this is correct
After failover, clients must update the connection string to the new primary server.
Go deeper
Related to this question
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-300 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-300 exam.