DOP-C02 Incident and Event Response Practice Question
This DOP-C02 practice question tests your understanding of incident and event response. 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 runs a production database on Amazon RDS for MySQL. The database experiences a sudden spike in connections, causing the application to time out. The DevOps team needs to diagnose the issue quickly. Which combination of actions should be taken? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Check CloudWatch metrics for DatabaseConnections and CPUUtilization.
Option A is correct because CloudWatch RDS metrics provide real-time connection count. Option D is correct because Performance Insights helps identify SQL queries causing the spike. Option B is wrong because increasing instance size is a mitigation, not diagnosis. Option C is wrong because the RDS console does not show individual connections. Option E is wrong because VPC Flow Logs show network traffic, not database connections.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Check CloudWatch metrics for DatabaseConnections and CPUUtilization.
Why this is correct
These metrics show connection count and resource usage.
Related concept
Static NAT maps one inside address to one outside address.
✗
Immediately scale up the RDS instance to handle the load.
Why it's wrong here
Scaling is a reactive fix, not diagnostic.
✗
Analyze VPC Flow Logs to identify the source IPs of connections.
Why it's wrong here
VPC Flow Logs show network flows, not database connections.
✗
Use the RDS console to view the number of active connections per user.
Why it's wrong here
RDS console does not provide per-user connection details.
✓
Enable Performance Insights and review the top SQL statements.
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Trap categories for this question
Command / output trap
VPC Flow Logs show network flows, not database connections.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
Incident and Event Response — This question tests Incident and Event Response — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Check CloudWatch metrics for DatabaseConnections and CPUUtilization. — Option A is correct because CloudWatch RDS metrics provide real-time connection count. Option D is correct because Performance Insights helps identify SQL queries causing the spike. Option B is wrong because increasing instance size is a mitigation, not diagnosis. Option C is wrong because the RDS console does not show individual connections. Option E is wrong because VPC Flow Logs show network traffic, not database connections.
What should I do if I get this DOP-C02 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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