A company has a fleet of EC2 instances running different workloads. The DevOps team wants to identify instances that are under-utilized so they can be downsized or stopped. The team has tagged all instances with the key 'workload' and values like 'web', 'batch', and 'database'. What should the team use to identify under-utilized instances?

CloudWatch dashboards with a separate widget for each instance's CPU utilization.

AWS Trusted Advisor to check for idle instances and under-utilized resources.

AWS Compute Optimizer to get recommendations for the entire fleet, filtered by the 'workload' tag.

The EC2 console's 'Instance Type' column to manually review each instance's type.

AWSCertified CloudOps Engineer - Associate

Domain 1Objective 3

Task 1.3: Implement Performance Optimization Strategies for Compute, Storage, and Database Resources. SOA-C03 Practice Questions (Page 1)

Part of the Content Domain 1: Monitoring, Logging, Analysis, Remediation, and Performance Optimization domain, which makes up ~24% of our current practice bank. AWS does not publish an official question count, but from its 130-minute exam (~50–85 total, ~12–20 in this domain), expect 4–7 from this objective — we provide 34 practice questions to prepare you well beyond it. (estimate)

34questions here

7free pages

13concepts

13 Concepts in This Objective

Compute performance metrics and tools
Resource tags for performance optimization
EBS performance metrics and troubleshooting
EBS volume types and optimization
S3 performance strategies
S3 lifecycle policies for performance and cost
Shared storage solutions evaluation
EFS lifecycle and performance optimization
RDS performance monitoring
RDS configuration optimization
EC2 instance optimization
EC2 storage and networking optimization
EC2 placement groups

Questions 1–5

1foundation · easy
Which AWS feature allows you to categorize EC2 instances by applying key-value pairs for filtering and management?
Select an answer first
2application · medium
A company has a fleet of EC2 instances running different workloads. The DevOps team wants to identify instances that are under-utilized so they can be downsized or stopped. The team has tagged all instances with the key 'workload' and values like 'web', 'batch', and 'database'. What should the team use to identify under-utilized instances?
Select an answer first
3foundation · easy
Which RDS feature allows you to modify database parameters (such as buffer pool size) to optimize performance?
Select an answer first
4foundation · easy
Which Amazon EBS volume type is designed for high-performance, low-latency workloads that require sustained IOPS, such as large databases?
Select an answer first
5foundation · easy
Which EBS volume type provides a baseline performance of 3 IOPS per GB and can burst up to 16,000 IOPS, making it suitable for many general-purpose workloads?
Select an answer first

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Task 1.3: Implement Performance Optimization Strategies for Compute, Storage, and Database Resources. SOA-C03 Practice Questions (Page 1)

Questions 1–5

Which AWS feature allows you to categorize EC2 instances by applying key-value pairs for filtering and management?

Which RDS feature allows you to modify database parameters (such as buffer pool size) to optimize performance?

Which Amazon EBS volume type is designed for high-performance, low-latency workloads that require sustained IOPS, such as large databases?

Which EBS volume type provides a baseline performance of 3 IOPS per GB and can burst up to 16,000 IOPS, making it suitable for many general-purpose workloads?

Keep studying — Content Domain 1: Monitoring, Logging, Analysis, Remediation, and Performance Optimization