DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
A company is running a web application on EC2 instances behind an Application Load Balancer. The application experiences high latency during peak hours. A developer needs to improve performance. Which TWO actions should the developer take? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure Auto Scaling to add more instances during peak hours.
Options A and C are correct. Auto Scaling adds instances during peak hours, spreading the load. ElastiCache caches database results, reducing latency. Option B is wrong because increasing instance size helps but is less elastic. Option D is wrong because increasing ALB idle timeout does not affect latency. Option E is wrong because EBS optimization is about network throughput, not application latency.
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.
✓
Configure Auto Scaling to add more instances during peak hours.
Why this is correct
Auto Scaling adds capacity to handle increased load.
Related concept
Read the scenario before looking for a memorised answer.
✗
Increase the ALB idle timeout.
Why it's wrong here
Idle timeout does not affect latency.
✓
Implement Amazon ElastiCache to cache frequently accessed data.
Why this is correct
Caching reduces database load and latency.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use larger EC2 instance types.
Why it's wrong here
Larger instances help but are less cost-effective than scaling out.
✗
Enable EBS optimization on the instances.
Why it's wrong here
EBS optimization improves disk I/O, not application latency.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which DVA-C02 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.
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure Auto Scaling to add more instances during peak hours. — Options A and C are correct. Auto Scaling adds instances during peak hours, spreading the load. ElastiCache caches database results, reducing latency. Option B is wrong because increasing instance size helps but is less elastic. Option D is wrong because increasing ALB idle timeout does not affect latency. Option E is wrong because EBS optimization is about network throughput, not application latency.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-C02 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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This DVA-C02 practice question is part of Courseiva's free Amazon Web Services 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 DVA-C02 exam.
Question Discussion
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