CLF-C02 Question 424

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose C1

  AWS On-Demand Capacity Reservations and On-Demand Instances serve different purposes: 1. On-Demand Capacity Reservations: -Purpose: Reserve compute capacity in a specific Availability Zone for any duration. -Flexibility: Can be created, modified, or canceled at any time. -Use Cases: Ideal for ensuring capacity for business-critical workloads, regulatory requirements, and disaster recovery. 2. On-Demand Instances: - Purpose: Provide compute capacity without any upfront commitment. - Flexibility: Pay for compute capacity by the hour or second, depending on the instance type. - Use Cases: Suitable for applications with unpredictable workloads or short-term requirements(1). (1) https://aws.amazon.com/compare/the-difference-between-on-demand-instances-and-reserved-instances/.

• Chose D3

  D. On-Demand Instances

• 2

  In this scenario, the application only runs periodically—once every week and at the end of the month. Since the EC2 instances can be shut down when not in use, On-Demand Instances are the most cost-effective option. On-Demand Instances are ideal for intermittent workloads that do not require long-term or consistent usage commitments, allowing the company to pay only for the compute time they use.