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Amazon Elastic Compute Cloud (Amazon EC2) Spot instances are appropriate for which of the following workloads?
A
Workloads that are only run in the morning and stopped at night
B
Workloads where the availability of the Amazon EC2 instances can be flexible
C
Workloads that need to run for long periods of time without interruption
D
Workloads that are critical and need Amazon EC2 instances with termination protection
Explanation:
Amazon EC2 Spot Instances are designed for workloads that can tolerate interruptions and have flexible availability requirements. The key characteristics that make Spot Instances appropriate are:
Flexible availability: Spot Instances can be interrupted when AWS needs the capacity back, so they're ideal for workloads that don't require continuous, uninterrupted operation
Cost-effective: Spot Instances offer significant discounts (up to 90% off On-Demand prices) for interruptible workloads
Suitable use cases: Data analysis, batch processing, background jobs, and optional tasks
Why other options are incorrect:
A: While time-based workloads might use Spot Instances, the defining characteristic is flexibility, not specific timing
C: Spot Instances are NOT suitable for long-running workloads without interruption - they can be terminated with short notice
D: Critical workloads requiring termination protection should use On-Demand or Reserved Instances, not Spot Instances
According to AWS documentation: "Spot Instances are a cost-effective choice if you can be flexible about when your applications run and if your applications can be interrupted."