CLF-C02 Billing and Pricing 3 — Questions and Answers
Question 1: A company purchases a 1-year Reserved Instance for EC2. After 6 months, they no longer need it. What can they do with the unused reservation?
- Request a full refund from AWS
- Sell it on the AWS Reserved Instance Marketplace (Correct answer)
- Convert it to a Spot Instance automatically
- Transfer it to a different AWS account for free
Correct answer: Sell it on the AWS Reserved Instance Marketplace
Unused Standard Reserved Instances can be listed and sold to other AWS customers through the Reserved Instance Marketplace.
Question 2: Which Savings Plan type provides the most flexibility by applying discounts to any EC2 usage regardless of instance family, size, OS, or region?
- EC2 Instance Savings Plans
- Compute Savings Plans (Correct answer)
- SageMaker Savings Plans
- Reserved Instance Savings Plans
Correct answer: Compute Savings Plans
Compute Savings Plans apply to EC2, Fargate, and Lambda usage across any region, instance family, size, or OS, offering the broadest flexibility.
Question 3: What happens to your AWS Free Tier benefits when they expire or are exceeded?
- AWS suspends your account until you upgrade
- You are automatically charged standard On-Demand rates (Correct answer)
- Usage is throttled to stay within free limits
- AWS sends a usage report but does not charge
Correct answer: You are automatically charged standard On-Demand rates
Once Free Tier limits are exceeded or the 12-month period ends, AWS automatically charges the standard On-Demand rates for any usage.
Question 4: A company runs a steady-state database workload 24/7 for 3 years. Which purchasing option provides the greatest cost savings?
- On-Demand Instances
- 1-Year Reserved Instances with No Upfront payment
- 3-Year Reserved Instances with All Upfront payment (Correct answer)
- Spot Instances
Correct answer: 3-Year Reserved Instances with All Upfront payment
3-Year Reserved Instances with All Upfront payment provide the maximum discount (up to 72% over On-Demand) for predictable, long-running workloads.
Question 5: Which AWS service enables you to estimate the cost of a new AWS architecture before you build it?
- AWS Cost Explorer
- AWS Budgets
- AWS Pricing Calculator (Correct answer)
- AWS Trusted Advisor
Correct answer: AWS Pricing Calculator
AWS Pricing Calculator lets you model your architecture and generate an estimated monthly cost before provisioning any resources.
Question 6: An S3 bucket stores 10 TB of data. Which S3 storage class would be most cost-effective for data accessed only once or twice per year?
- S3 Standard
- S3 Intelligent-Tiering
- S3 Glacier Deep Archive (Correct answer)
- S3 Standard-IA
Correct answer: S3 Glacier Deep Archive
S3 Glacier Deep Archive is the lowest-cost S3 storage class, ideal for data that is rarely accessed and can tolerate retrieval times of 12 hours or more.
Question 7: Which AWS feature automatically moves S3 objects between storage classes based on changing access patterns without manual intervention?
- S3 Lifecycle Policies
- S3 Intelligent-Tiering (Correct answer)
- S3 Replication
- S3 Object Lock
Correct answer: S3 Intelligent-Tiering
S3 Intelligent-Tiering monitors access patterns and automatically moves objects to the most cost-effective storage tier at no retrieval fee.
CLF-C02 Billing and Pricing 3
A company purchases a 1-year Reserved Instance for EC2.
After 6 months, they no longer need it.
What can they do with the unused reservation?