SAP-C02 Question 302
Select 4A company is running a critical web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The company's operations team has reported intermittent latency issues during peak traffic hours, but they are unable to determine the root cause. As a Solutions Architect, which combination of AWS services and features would you recommend to monitor and diagnose the performance issues effectively?
- A
Enable ALB access logs and analyze the logs for latency patterns.
- B
Use AWS X-Ray to trace requests and identify bottlenecks in application components.
- C
Set up Amazon CloudWatch Synthetics to simulate user interactions and detect latency issues.
- D
Launch EC2 instances in multiple Availability Zones to balance the load.
- E
Enable Enhanced Monitoring on the EC2 instances to capture detailed instance-level metrics.
Show answer and explanation
Correct answers: A, B, C, E
Explanation
To effectively monitor and diagnose performance issues in a web application, a combination of tools is needed to analyze different layers of the architecture. ALB access logs help identify issues at the load balancer level, AWS X-Ray provides insights into application-level bottlenecks, and CloudWatch Synthetics ensures end-user experience is monitored. Additionally, Enhanced Monitoring on EC2 instances allows for a detailed examination of instance-level metrics. Together, these solutions provide a comprehensive approach to identifying and resolving performance issues. However, launching EC2 instances in multiple Availability Zones is a scalability and fault tolerance strategy, not a monitoring or diagnostic tool.
- A. Correct.
Enabling ALB access logs provides detailed information about incoming requests, including latency data, which can help identify patterns and potential performance bottlenecks.
- B. Correct.
AWS X-Ray is a distributed tracing tool that helps analyze and debug the performance of applications, making it a suitable choice for identifying specific bottlenecks in the application flow.
- C. Correct.
Amazon CloudWatch Synthetics simulates user interactions with the application, enabling proactive monitoring and the detection of latency or availability issues from an end-user perspective.
- D. Incorrect.
While launching EC2 instances in multiple Availability Zones improves fault tolerance and scalability, it does not directly address the monitoring or diagnosis of performance issues.
- E. Correct.
Enhanced Monitoring on EC2 instances provides detailed metrics such as disk I/O, network, and CPU utilization, which are useful for diagnosing instance-level performance issues.