SOA-C02 Monitoring, Logging, and Remediation Practice Question
This SOA-C02 practice question tests your understanding of monitoring, logging, and remediation. 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 runs a critical web application on EC2 instances behind an Application Load Balancer (ALB) in an Auto Scaling group. The application experiences intermittent latency spikes. The SysOps administrator has enabled detailed CloudWatch metrics on the ALB and the EC2 instances. The administrator notices that during the latency spikes, the ALB's TargetResponseTime metric increases, but the EC2 instance's CPU utilization and memory usage remain normal. The administrator also observes that the number of concurrent connections to the ALB spikes during these periods. Which action should the administrator take to identify the root cause?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Analyze the ALB's ActiveConnectionCount and RequestCountPerTarget metrics to see if the load balancer is reaching its connection limit.
Option A is correct because the ALB's ActiveConnectionCount and RequestCountPerTarget metrics directly indicate whether the load balancer is approaching its connection limit (default 50,000 for ALBs). During latency spikes, if concurrent connections spike but instance CPU/memory are normal, the bottleneck is likely at the load balancer level, not the instances. Analyzing these metrics helps determine if the ALB is queuing or dropping requests due to connection limits, causing increased TargetResponseTime.
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.
✓
Analyze the ALB's ActiveConnectionCount and RequestCountPerTarget metrics to see if the load balancer is reaching its connection limit.
Why this is correct
High connection counts can cause latency even if CPU is low, due to connection queuing.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check the RDS database's DatabaseConnections metric to see if the database is overwhelmed.
Why it's wrong here
No evidence suggests database issues; the problem is at the ALB.
✗
Enable VPC Flow Logs and analyze the traffic patterns for dropped packets.
Why it's wrong here
Dropped packets would indicate network issues, but the symptom is latency, not packet loss.
✗
Enable detailed monitoring on the EC2 instances to capture CPU credits for burstable instances.
Why it's wrong here
CPU credits are irrelevant if CPU utilization is normal.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume latency spikes always indicate backend instance issues (CPU/memory) and overlook the ALB's connection limits, which can cause increased TargetResponseTime even when instances are underutilized.
Detailed technical explanation
How to think about this question
ALBs have a default connection limit of 50,000 concurrent connections (or 10,000 new connections per second) per load balancer node. When this limit is approached, the ALB begins to queue requests, increasing TargetResponseTime even if backend instances are healthy. The ActiveConnectionCount metric tracks current connections, while RequestCountPerTarget shows per-instance request volume; comparing these can reveal if the ALB is the bottleneck rather than the instances. In real-world scenarios, sudden traffic spikes (e.g., from a marketing campaign or DDoS) can saturate ALB connections before instances are stressed.
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.
TExam Day Tips
→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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Monitoring, Logging, and Remediation — This question tests Monitoring, Logging, and Remediation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Analyze the ALB's ActiveConnectionCount and RequestCountPerTarget metrics to see if the load balancer is reaching its connection limit. — Option A is correct because the ALB's ActiveConnectionCount and RequestCountPerTarget metrics directly indicate whether the load balancer is approaching its connection limit (default 50,000 for ALBs). During latency spikes, if concurrent connections spike but instance CPU/memory are normal, the bottleneck is likely at the load balancer level, not the instances. Analyzing these metrics helps determine if the ALB is queuing or dropping requests due to connection limits, causing increased TargetResponseTime.
What should I do if I get this SOA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This SOA-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 SOA-C02 exam.
Question Discussion
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