Prevent Storage Full Errors by Increasing Maximum Database Size in Azure SQL Database
This DP-300 practice question tests your understanding of monitor, configure, and optimize database 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.
Network Topology
Refer to the exhibit. You notice the database db1 is currently 80% full on storage, and the service objective is S3. Which action would best prevent storage full errors while minimizing cost?
Network Topology
A
Enable automatic storage growth on the database.
Why wrong: Azure SQL Database does not have an auto-growth setting for storage; you must set max size.
B
Change the service objective to S4.
Why wrong: S4 offers more storage (250 GB) but at higher compute cost. Not the most cost-effective.
C
Increase the maximum database size to 250 GB.
S3 supports up to 250 GB storage. Increasing max size to 250 GB provides headroom without changing the service tier, minimizing cost.
D
Scale the database to a higher service tier like Standard S4.
Why wrong: Scaling up increases cost unnecessarily.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Increase the maximum database size to 250 GB.
The exhibit shows the database is at 80% of its current maximum size. The S3 service objective allows a maximum database size of up to 250 GB. By increasing the maximum size to 250 GB, you provide sufficient storage headroom without changing the service tier, which would incur higher costs. Option A (automatic storage growth) is not a user-configurable feature in Azure SQL Database. Options B and D involve scaling to a higher service tier (S4 or higher), which is unnecessary and more expensive.
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.
✗
Enable automatic storage growth on the database.
Why it's wrong here
Azure SQL Database does not have an auto-growth setting for storage; you must set max size.
✗
Change the service objective to S4.
Why it's wrong here
S4 offers more storage (250 GB) but at higher compute cost. Not the most cost-effective.
✓
Increase the maximum database size to 250 GB.
Why this is correct
S3 supports up to 250 GB storage. Increasing max size to 250 GB provides headroom without changing the service tier, minimizing cost.
Related concept
Read the scenario before looking for a memorised answer.
✗
Scale the database to a higher service tier like Standard S4.
Why it's wrong here
Scaling up increases cost unnecessarily.
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.
Quick reference
AWS S3 Storage Class Comparison
Storage Class
Min Duration
Retrieval
Use Case
S3 Standard
None
Immediate
Frequently accessed data
S3 Standard-IA
30 days
Immediate
Infrequent access, rapid retrieval
S3 One Zone-IA
30 days
Immediate
Non-critical infrequent data
S3 Intelligent-Tiering
None
Immediate–hours
Unknown or changing access patterns
S3 Glacier Instant
90 days
Milliseconds
Archive with instant retrieval
S3 Glacier Flexible
90 days
Minutes–hours
Archive, flexible retrieval
S3 Glacier Deep Archive
180 days
Hours
Long-term compliance archive
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-300 question in full detail.
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.
Monitor, configure, and optimize database resources — This question tests Monitor, configure, and optimize database resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Increase the maximum database size to 250 GB. — The exhibit shows the database is at 80% of its current maximum size. The S3 service objective allows a maximum database size of up to 250 GB. By increasing the maximum size to 250 GB, you provide sufficient storage headroom without changing the service tier, which would incur higher costs. Option A (automatic storage growth) is not a user-configurable feature in Azure SQL Database. Options B and D involve scaling to a higher service tier (S4 or higher), which is unnecessary and more expensive.
What should I do if I get this DP-300 question wrong?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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