CV0-004 Cloud Architecture and Design Practice Question
A company is using AWS and wants to minimize costs for a batch processing workload that runs for 2 hours every night. The workload can tolerate interruptions. Which pricing model should the company choose?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Spot instances
Spot instances offer significant discounts and are suitable for fault-tolerant, interruptible workloads. The workload's short duration and tolerance for interruption make spot instances ideal for cost savings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Dedicated hosts
Why it's wrong here
Dedicated hosts are expensive and not needed for this workload.
- ✓
Spot instances
Why this is correct
Spot instances offer the lowest cost and are suitable for fault-tolerant, short-lived workloads.
- ✗
Reserved instances
Why it's wrong here
Reserved instances require a 1- or 3-year commitment, which is not cost-effective for a 2-hour nightly workload.
- ✗
On-demand instances
Why it's wrong here
On-demand is more expensive than spot instances and does not take advantage of the workload's interruptibility.
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