AWS Certified Cloud Practitioner
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A company has batch workloads that need to run for short periods of time on Amazon EC2. The workloads can handle interruptions and can start again from where they ended.
What is the MOST cost-effective EC2 instance purchasing option to meet these requirements?
Real Exam
Community
RRitesh
0
A
Reserved Instances
B
Spot Instances
C
Dedicated Instances
D
On-Demand Instances
Explanation:
Explanation
Spot Instances are the most cost-effective option for this scenario because:
- Cost Savings: Spot Instances offer up to 90% discount compared to On-Demand Instances
- Interruption Tolerance: The workloads can handle interruptions, which is perfect for Spot Instances since AWS can reclaim them with a 2-minute warning when capacity is needed
- Resume Capability: The workloads can start again from where they ended, making them ideal for Spot Instances that might be interrupted
- Batch Workloads: Short-running batch jobs are ideal candidates for Spot Instances
- Short Duration: Since the workloads run for short periods, the risk of interruption is minimized
Why not the other options:
- Reserved Instances: Require 1-3 year commitment, not suitable for short-term workloads
- Dedicated Instances: Most expensive option, provides physical isolation but unnecessary for this use case
- On-Demand Instances: More expensive than Spot Instances and don't provide the same cost savings
Spot Instances are specifically designed for fault-tolerant, flexible workloads like batch processing, data analysis, and background processing that can withstand interruptions.
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