Question 123 of 953

Plan and configure a high availability and disaster recovery environment →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is to create a failover group with an automatic failover policy and set the grace period to 1 hour, while enabling read-scale failover for the secondary. This directly addresses the 15-minute RTO because automatic failover eliminates the manual intervention and DNS propagation delays that caused the 20-minute failover time, while the 1-hour grace period ensures the system waits for data synchronization before triggering failover, preserving the 15-second RPO. On the DP-300 exam, this scenario tests your understanding of how failover group policies impact recovery objectives—specifically that automatic failover with a properly configured grace period reduces failover time by streamlining the process, whereas manual failover or scaling compute resources does not. A common trap is assuming higher performance tiers improve failover speed, but the bottleneck is typically synchronization and DNS, not compute power. Memory tip: think “Auto for RTO, Grace for RPO”—automatic policy meets the time target, grace period protects data loss.

DP-300 Practice Question: Plan and configure a high availability and disaster recovery environment

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 has an Azure SQL Managed Instance deployed in the East US region. The database hosts a financial application that requires a Recovery Time Objective (RTO) of 15 minutes and a Recovery Point Objective (RPO) of 15 seconds. The solution must use a secondary region in West US. The budget allows for a single secondary instance but must minimize compute costs during normal operations. You have configured a failover group between the primary and a secondary managed instance in West US. During a recent disaster recovery drill, you observed that the failover took 20 minutes to complete, exceeding the RTO. You need to improve the failover time to meet the 15-minute RTO without increasing costs. What should you do?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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.

Question 1mediummultiple choice

Full question →

A
Ensure the secondary managed instance is in a different virtual network and configure cross-region VNet peering for faster synchronization.
Why wrong: VNet peering does not significantly reduce failover time; failover time is dominated by DNS and reconfiguration.
B
Create a failover group with automatic failover policy and set the grace period to 1 hour. Also, enable read-scale failover for the secondary.
Automatic failover reduces failover time by eliminating manual steps; read-scale failover does not affect failover time but helps read workloads.
C
Scale up the primary managed instance to a higher service tier (e.g., from General Purpose to Business Critical) to improve performance.
Why wrong: Scaling up does not directly reduce failover time; failover time is network and synchronization dependent.
D
Configure the failover group to use manual failover instead of automatic; this reduces failover time because you can control the exact moment.
Why wrong: Manual failover is generally slower than automatic because it requires human intervention.

Full breakdown with real-world context →

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

✓

Create a failover group with automatic failover policy and set the grace period to 1 hour. Also, enable read-scale failover for the secondary.

Option D is correct because creating a failover group with automatic failover policy reduces manual steps and failover time. Option A is incorrect because scaling up the primary does not improve failover time. Option B is incorrect because manual failover is slower than automatic. Option C is incorrect because cross-region VNet peering may add latency but failover time is more dependent on synchronization and DNS propagation.

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.

✗
Ensure the secondary managed instance is in a different virtual network and configure cross-region VNet peering for faster synchronization.
Why it's wrong here
VNet peering does not significantly reduce failover time; failover time is dominated by DNS and reconfiguration.
✓
Create a failover group with automatic failover policy and set the grace period to 1 hour. Also, enable read-scale failover for the secondary.
Why this is correct
Automatic failover reduces failover time by eliminating manual steps; read-scale failover does not affect failover time but helps read workloads.
Clue confirmation
The clue words "primary", "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Scale up the primary managed instance to a higher service tier (e.g., from General Purpose to Business Critical) to improve performance.
Why it's wrong here
Scaling up does not directly reduce failover time; failover time is network and synchronization dependent.
✗
Configure the failover group to use manual failover instead of automatic; this reduces failover time because you can control the exact moment.
Why it's wrong here
Manual failover is generally slower than automatic because it requires human intervention.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
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

A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.

What to study next

Got this wrong? Here's your next step.

Identify which DP-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this DP-300 question test?

Plan and configure a high availability and disaster recovery environment — This question tests Plan and configure a high availability and disaster recovery environment — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Create a failover group with automatic failover policy and set the grace period to 1 hour. Also, enable read-scale failover for the secondary. — Option D is correct because creating a failover group with automatic failover policy reduces manual steps and failover time. Option A is incorrect because scaling up the primary does not improve failover time. Option B is incorrect because manual failover is slower than automatic. Option C is incorrect because cross-region VNet peering may add latency but failover time is more dependent on synchronization and DNS propagation.

What should I do if I get this DP-300 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "primary", "minimum / minimize". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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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.