SAP-C02 Question 306
Select 3A company has deployed a web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The application is experiencing intermittent latency issues during high traffic periods. The company wants to identify performance bottlenecks and improve the application's response time. Which combination of performance monitoring technologies can be used to effectively diagnose the issue?
- A
Enable Amazon CloudWatch metrics for the ALB to monitor request latency and target response times.
- B
Use AWS X-Ray to trace requests across the application and identify delays in specific components.
- C
Enable AWS Trusted Advisor to provide detailed performance metrics for the EC2 instances.
- D
Set up VPC Flow Logs to monitor and analyze inbound and outbound traffic patterns.
- E
Enable EC2 Detailed Monitoring to collect granular CPU, memory, and network statistics.
Show answer and explanation
Correct answers: A, B, E
Explanation
To diagnose the application's intermittent latency issues, a combination of CloudWatch metrics for the ALB, AWS X-Ray, and EC2 Detailed Monitoring is most effective. CloudWatch metrics help monitor the ALB's performance, X-Ray traces requests to identify delays in specific components, and EC2 Detailed Monitoring provides granular resource utilization data. Together, these tools offer comprehensive visibility into the application's performance bottlenecks.
- A. Correct.
CloudWatch metrics for the ALB provide valuable insights into request latency, target response times, and other performance indicators, making it a key tool for diagnosing latency issues.
- B. Correct.
AWS X-Ray is specifically designed for tracing requests across application components, which helps pinpoint delays in specific services or resources.
- C. Incorrect.
AWS Trusted Advisor provides recommendations for cost optimization, security, and best practices but does not offer detailed performance metrics for diagnosing latency issues.
- D. Incorrect.
VPC Flow Logs are useful for analyzing network traffic patterns but are not intended to diagnose application-level performance issues or latency.
- E. Correct.
Enabling EC2 Detailed Monitoring provides more granular metrics for CPU, memory, and network usage, which can help identify resource bottlenecks during high traffic periods.