AWS Certified Cloud Practitioner

Explanation

AWS Trusted Advisor provides recommendations across several categories to help optimize your AWS environment. The standard categories are:

• Security - Identifies security gaps and provides recommendations for security best practices
• Cost Optimization - Helps identify unused or underutilized resources to reduce costs
• Performance - Monitors service limits and provides performance optimization suggestions
• Fault Tolerance - Provides recommendations to improve application resilience and availability

High Availability is not a distinct category in AWS Trusted Advisor. While fault tolerance and high availability are related concepts, Trusted Advisor specifically uses the "Fault Tolerance" category rather than "High Availability."

AWS Trusted Advisor Categories:

1. Security - Security group configurations, IAM usage, MFA on root account
2. Cost Optimization - Idle load balancers, underutilized EBS volumes, unused Elastic IPs
3. Performance - Service limits, overutilized EBS volumes, high latency
4. Fault Tolerance - EBS snapshots, multi-AZ deployments, backup configurations

The correct answer is B (High Availability) because it's not one of the four main categories that AWS Trusted Advisor uses for its recommendations.