The answer is to verify the `max_allowed_packet` and `connect_timeout` settings. When troubleshooting high aborted connections in RDS MySQL, these two parameters are the most common culprits because a client sending a query packet larger than `max_allowed_packet` or failing to complete the handshake within the `connect_timeout` window will cause the server to immediately abort the connection. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your understanding that aborted connections are typically a client-side or configuration mismatch issue, not a capacity problem—so traps often include tempting wrong answers like `max_connections` (which limits total sessions but does not cause aborts) or `binlog retention` (which is purely for replication). A solid memory tip is to think of the "handshake and packet size" rule: if a connection is aborted, check the time it takes to say hello (connect_timeout) and the size of the luggage it brings (max_allowed_packet).
DBS-C01 Monitoring and Troubleshooting Practice Question
This DBS-C01 practice question tests your understanding of monitoring and troubleshooting. 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.
Which TWO settings should be verified when troubleshooting an RDS for MySQL instance that has a high number of aborted connections? (Choose 2.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
connect_timeout parameter
Options A and C are correct because connection timeout and max allowed packet can cause aborted connections. Option B is wrong because max_connections limits total connections but not aborts. Option D is wrong because query cache is not related to connections. Option E is wrong because binlog retention is for replication.
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.
✓
connect_timeout parameter
Why this is correct
Low connect_timeout can cause aborted connections if client takes too long.
Related concept
Read the scenario before looking for a memorised answer.
✓
max_allowed_packet parameter
Why this is correct
If packet size exceeds max_allowed_packet, connection may be aborted.
Related concept
Read the scenario before looking for a memorised answer.
✗
query_cache_type parameter
Why it's wrong here
Query cache affects query performance, not connection handling.
✗
binlog_retention_hours parameter
Why it's wrong here
Binlog retention is for replication, not connections.
✗
max_connections parameter
Why it's wrong here
max_connections limits total connections but does not cause aborted connections.
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 DBS-C01 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.
Monitoring and Troubleshooting — This question tests Monitoring and Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: connect_timeout parameter — Options A and C are correct because connection timeout and max allowed packet can cause aborted connections. Option B is wrong because max_connections limits total connections but not aborts. Option D is wrong because query cache is not related to connections. Option E is wrong because binlog retention is for replication.
What should I do if I get this DBS-C01 question wrong?
Identify which DBS-C01 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 DBS-C01 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 DBS-C01 exam.
Question Discussion
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