SAP-C02 Question 304
Select 3A media streaming company is experiencing performance issues with their application hosted on Amazon EC2 instances behind an Application Load Balancer (ALB). Users are reporting intermittent high latency. As a Solutions Architect, you need to identify the cause and recommend a solution. Which AWS performance monitoring technologies would be the most appropriate to diagnose the issue?
- A
Amazon CloudWatch metrics for the ALB and EC2 instances
- B
VPC Flow Logs to analyze network traffic patterns
- C
AWS X-Ray to trace request paths through the application
- D
AWS Trusted Advisor to get recommendations for security and cost optimization
- E
Amazon CloudTrail logs to audit API calls to the application
Show answer and explanation
Correct answers: A, B, C
Explanation
To diagnose the performance issues effectively, you need to use tools that provide deep insights into application behavior and resource performance. CloudWatch metrics help you monitor key performance indicators (KPIs), VPC Flow Logs help analyze network traffic, and AWS X-Ray helps trace requests to identify bottlenecks in the application. Trusted Advisor and CloudTrail do not provide the detailed performance diagnostics required for this scenario.
- A. Correct.
Amazon CloudWatch metrics can help monitor resource utilization, request count, and latency for both the ALB and EC2 instances, making it a key tool for diagnosing performance issues.
- B. Correct.
VPC Flow Logs provide network-level insights such as traffic patterns, dropped packets, and unexpected network behavior, which could be contributing to latency issues.
- C. Correct.
AWS X-Ray allows you to trace requests as they flow through your application, helping you identify bottlenecks and performance issues in the code or architecture.
- D. Incorrect.
AWS Trusted Advisor is focused on best practices across cost, performance, and security, but it does not provide real-time performance monitoring or diagnostics for application latency issues.
- E. Incorrect.
Amazon CloudTrail logs focus on auditing API activity for AWS resources, which is useful for security and compliance but not for diagnosing performance issues.