Which AWS Service Monitors Resources and Applications in Real Time?
Which AWS service or tool will monitor AWS resources and applications in real time?
Community Votes
100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The question tests the distinction between logging/auditing services and monitoring/metrics services, with the trap being confusion between CloudTrail's audit trails and CloudWatch's performance data.
Amazon CloudWatch is the correct AWS service for real-time monitoring of resources and applications. This page clarifies why CloudWatch is superior to CloudTrail and Trusted Advisor for operational metrics.
AWS CloudTrail (C) is a common wrong answer because it tracks API activity, but it does not provide real-time performance metrics like CPU utilization or latency.
Community Discussion (3 comments)
Comments & Corrections
No comments yet — spotted an error or have a note? Share it below.
Expert Analysis
Why the Answer Is Correct
Amazon CloudWatch is the primary AWS service designed to collect and track metrics, collect and monitor log files, and set alarms. It provides real-time visibility into the health and performance of AWS resources, including EC2 instances, RDS databases, and Lambda functions. The term "real time" specifically points to CloudWatch's ability to push metrics every minute (or more frequently for detailed monitoring), allowing users to react instantly to changes.Why the Other Options Are Wrong
AWS CloudTrail (C) records API calls for auditing and compliance purposes; it is not a performance monitoring tool. AWS Trusted Advisor (A) offers best practice checks on cost optimization, security, and fault tolerance, but these are not real-time operational monitors. AWS Cost Explorer (D) is strictly for analyzing historical and forecasted costs, not application or resource performance.Community Comment Notes
Community consensus strongly supports B, with learners noting that CloudWatch handles logs from various sources like ECS and Lambda. One learner highlighted that CloudWatch enables "real-time monitoring of logs," reinforcing its role as the central observability service.Official Reference
Exam Strategy
Always associate 'metrics' and 'real-time monitoring' with CloudWatch. Reserve CloudTrail for 'API auditing' and 'compliance', and Reserved Advisor for 'best practices' or 'cost optimization'.
Frequently Asked Questions
Does CloudWatch monitor logs?
Yes, Amazon CloudWatch Logs allows you to monitor, store, and access log files from EC2 instances, Lambda, and other sources in real time.
Can I use CloudTrail for performance monitoring?
No, CloudTrail only records API calls for security and auditing. It does not provide performance metrics like CPU usage or disk I/O.
Related Analysis
Practice All CLF-C02 Questions
Access 120 questions with complete answers and detailed explanations.
View Full CLF-C02 Practice Test →