SOA-C02 Question 310
Select 2You are managing a data processing workload that involves large-scale batch processing, where jobs can be interrupted and resumed without data loss. The workload has flexible completion timings but needs to process large datasets cost-effectively. How should you assess whether EC2 Spot Instances are the right choice for this workload?
- A
Evaluate if the workload is fault-tolerant and can handle interruptions.
- B
Check whether the workload has strict, real-time processing requirements.
- C
Analyze the historical Spot Instance pricing trends for cost predictability.
- D
Verify whether the workload can utilize On-Demand Capacity Reservations.
- E
Assess if the workload can be scheduled during off-peak hours to minimize interruptions.
Show answer and explanation
Correct answers: A, C
Explanation
To qualify workloads for EC2 Spot Instances, it's crucial to evaluate their fault tolerance and ability to handle interruptions, as well as analyze historical Spot pricing to estimate cost-effectiveness. Spot Instances are not suitable for workloads with strict real-time requirements or those needing guaranteed instance availability. By focusing on these criteria, you can determine if Spot Instances are a good fit for your workload.
- A. Correct.
Correct: Spot Instances are ideal for workloads that are fault-tolerant and can handle interruptions, as these instances can be terminated by AWS when capacity is no longer available.
- B. Incorrect.
Incorrect: Spot Instances are not suitable for workloads with strict, real-time processing requirements because they can be interrupted at any time.
- C. Correct.
Correct: Analyzing historical Spot Instance pricing trends helps estimate potential cost savings and determine if the workload can benefit from the lower costs associated with Spot Instances.
- D. Incorrect.
Incorrect: On-Demand Capacity Reservations ensure instance availability but do not relate to Spot Instances. They are designed for workloads with strict capacity requirements, not cost-optimized, interruptible workloads.
- E. Incorrect.
Incorrect: Scheduling during off-peak hours may help with performance but does not directly qualify a workload for Spot Instances, which are more focused on interruption tolerance and cost savings.