AWS Certified Cloud Practitioner

Explanation

Amazon CloudWatch is the correct AWS service that shows whether an Amazon EC2 instance has failed status checks.

Why Amazon CloudWatch?

• EC2 Status Checks: CloudWatch monitors EC2 instances and provides status checks that include:
  • System Status Checks: Monitor the AWS systems required to use your instance
  • Instance Status Checks: Monitor the software and network configuration of your individual instance
• Monitoring Capabilities: CloudWatch collects monitoring and operational data in the form of logs, metrics, and events
• Alarms and Notifications: You can set up CloudWatch alarms to notify you when status checks fail

Why not the other options?

• AWS CloudTrail: Records API calls and management events for auditing and compliance, not for monitoring instance health
• AWS Health Dashboard: Provides information about AWS service health and personal health events, but not specific EC2 instance status checks
• AWS Cloud Map: A service discovery service for cloud resources, not for monitoring instance health

CloudWatch is specifically designed for monitoring AWS resources and provides detailed metrics and status information for EC2 instances.