DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 Amazon EC2 instances behind an Application Load Balancer (ALB). The application uses Amazon ElastiCache for session state. Recently, users are experiencing intermittent session timeouts and slow page loads. The developer suspects the issue is related to the ElastiCache cluster. Which THREE actions should the developer take to troubleshoot and resolve the issue? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Monitor the ElastiCache cluster's CPU utilization and cache hit ratio in CloudWatch.
Options B, C, and D are correct. Option B helps identify slow queries and cache hits. Option C helps scale for increased load. Option D helps distribute traffic evenly. Option A is wrong because multi-AZ is for high availability, not performance. Option E is wrong because Encryption in transit addresses security, not performance.
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.
✓
Monitor the ElastiCache cluster's CPU utilization and cache hit ratio in CloudWatch.
Why this is correct
CPU utilization and cache hit ratio help identify performance bottlenecks.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable Encryption in transit for the ElastiCache cluster.
Why it's wrong here
Encryption addresses security, not performance.
✓
Scale the ElastiCache cluster by adding more nodes or using a larger node type.
Why this is correct
Adding nodes or increasing node size improves performance under load.
Related concept
Read the scenario before looking for a memorised answer.
✓
Review the application's cache key design and ensure that data is evenly distributed across shards.
Why this is correct
Even distribution prevents hot shards and improves performance.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable Multi-AZ replication for the ElastiCache cluster.
Why it's wrong here
Multi-AZ provides failover, not performance improvement.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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: Monitor the ElastiCache cluster's CPU utilization and cache hit ratio in CloudWatch. — Options B, C, and D are correct. Option B helps identify slow queries and cache hits. Option C helps scale for increased load. Option D helps distribute traffic evenly. Option A is wrong because multi-AZ is for high availability, not performance. Option E is wrong because Encryption in transit addresses security, not performance.
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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