Question #1408
Which type of application is most appropriate for Amazon EC2 Spot Instances?
A long-running application requiring consistent compute capacity without interruption
A fault-tolerant application that can handle interruptions and reduce expenses
A mission-critical workload needing guaranteed availability
A short-term application requiring reserved instance pricing
Explanation
Answer B is correct because Spot Instances are designed for workloads that can withstand interruptions, such as batch processing, distributed workloads, or stateless applications. They provide up to 90% cost savings compared to On-Demand pricing but can be reclaimed by AWS with short notice.
Option A is incorrect because long-running applications requiring uninterrupted compute capacity are better suited for On-Demand or Reserved Instances. Option C is incorrect because mission-critical workloads need guaranteed availability, which Spot Instances cannot provide. Option D is incorrect because Spot Instances do not use reserved instance pricing; Reserved Instances are a separate pricing model for steady-state workloads. Key takeaway: Spot Instances are cost-effective for fault-tolerant, flexible workloads but unsuitable for critical or uninterrupted use cases.
Answer
The correct answer is: B