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 using Amazon RDS for MySQL with Multi-AZ deployment. The application writes to the database using the primary endpoint. The company wants to improve read performance and offload read traffic from the primary instance. Which TWO actions should the company take? (Choose TWO.)
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an Amazon RDS read replica in the same region.
Option A is correct because a read replica can serve read traffic. Option C is correct because the application should use the read replica endpoint for read queries. Option B is wrong because Multi-AZ does not provide a separate read endpoint; the secondary is standby. Option D is wrong because RDS Proxy is for connection pooling, not read scaling. Option E is wrong because creating additional primary instances is not supported; RDS has one primary per DB instance.
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.
✓
Create an Amazon RDS read replica in the same region.
Why this is correct
A read replica can handle read traffic, reducing load on the primary.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Add another primary instance and configure replication.
Why it's wrong here
RDS does not support multiple primary instances; Multi-AZ has only one primary.
✓
Modify the application to use the read replica endpoint for SELECT queries.
Why this is correct
Directing read queries to the read replica offloads the primary.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the Multi-AZ secondary instance endpoint for read queries.
Why it's wrong here
The secondary in Multi-AZ is a standby and cannot serve traffic; it's only for failover.
✗
Enable Amazon RDS Proxy to distribute read queries across instances.
Why it's wrong here
RDS Proxy manages connections, not read distribution; it doesn't create a read endpoint.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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: Create an Amazon RDS read replica in the same region. — Option A is correct because a read replica can serve read traffic. Option C is correct because the application should use the read replica endpoint for read queries. Option B is wrong because Multi-AZ does not provide a separate read endpoint; the secondary is standby. Option D is wrong because RDS Proxy is for connection pooling, not read scaling. Option E is wrong because creating additional primary instances is not supported; RDS has one primary per DB instance.
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.
Are there clue words in this question I should notice?
Yes — watch for: "primary". 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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Question Discussion
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