DevOps Engineering on AWS Certification Monitoring, Logging, and Observability on AWS

Question 1

Which AWS service aggregates and visualizes logs from EC2, Lambda, ECS, and other AWS resources?

Accepted Answer

Amazon CloudWatch Logs

Answer

Amazon CloudWatch Logs is the central service for collecting, monitoring, and storing log data from virtually any AWS resource or application.

Question 2

What does AWS X-Ray provide for distributed applications?

Accepted Answer

End-to-end tracing to identify performance bottlenecks and errors across services

Answer

AWS X-Ray records traces of requests as they travel through distributed application components, helping identify latency and error sources.

Question 3

Which CloudWatch feature automatically detects unusual patterns in metrics without requiring you to set static thresholds?

Accepted Answer

CloudWatch Anomaly Detection

Answer

CloudWatch Anomaly Detection uses machine learning to model the expected behavior of metrics and alerts when values deviate significantly.

Question 4

Which CloudWatch feature allows you to interactively search and analyze log data using a query language?

Accepted Answer

CloudWatch Logs Insights

Answer

CloudWatch Logs Insights provides a powerful query syntax to search, filter, and aggregate log data in near real time.

Question 5

What is the default metric retention period in Amazon CloudWatch for high-resolution metrics (1-second granularity)?

Accepted Answer

3 hours

Answer

High-resolution CloudWatch metrics at 1-second granularity are retained for 3 hours, after which they are aggregated to longer periods.

DevOps Engineering on AWS Certification Practice Test