CLF-C02 Question 286
Select 3A company is planning to use Amazon EC2 Reserved Instances (RIs) to save costs for workloads with predictable usage. Which of the following statements correctly describe the flexibility of Reserved Instances?
- A
Reserved Instances can be modified to change the Availability Zone within the same region.
- B
Reserved Instances can be applied to different instance families within the same region.
- C
Reserved Instances provide a capacity reservation for a specific Availability Zone.
- D
Reserved Instances can be modified to switch the operating system platform after purchase.
- E
Reserved Instances can be sold in the Reserved Instance Marketplace under certain conditions.
Show answer and explanation
Correct answers: A, C, E
Explanation
Reserved Instances offer flexibility in certain aspects, such as modifying the Availability Zone or selling unused RIs in the Reserved Instance Marketplace. However, they are limited in other areas, like being tied to a specific instance family and operating system platform. Understanding these flexibilities and limitations is essential for optimizing costs and usage.
- A. Correct.
Correct: Reserved Instances offer the flexibility to modify the Availability Zone within the same region, ensuring adaptability to changes in resource requirements.
- B. Incorrect.
Incorrect: Reserved Instances are tied to a specific instance family and cannot be applied to a different instance family. This requires purchasing new RIs for other families.
- C. Correct.
Correct: Reserved Instances provide a capacity reservation when purchased for a specific Availability Zone, ensuring resources are available when needed.
- D. Incorrect.
Incorrect: Reserved Instances are tied to the operating system platform selected during purchase and cannot be switched to a different platform.
- E. Correct.
Correct: Reserved Instances can be sold on the Reserved Instance Marketplace, subject to specific conditions like not being a regional RI.