CV0-004 Cloud Architecture and Design Practice Question
A cloud architect is choosing a compute pricing model for a batch processing job that runs for 2 hours every night. The job can be interrupted. Which option is most cost-effective?
⚠ Common exam trap
The CV0-004 exam often tests the misconception that Reserved instances are always cheaper for any recurring workload, but the trap here is that the short, interruptible nature of the job makes spot instances far more cost-effective than committing to a long-term reservation.
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 are the most cost-effective option because the batch processing job is fault-tolerant (can be interrupted) and runs for a fixed, short duration (2 hours nightly). Spot instances offer significant discounts (often 60-90% off on-demand pricing) by leveraging unused cloud capacity, which can be reclaimed with a 2-minute warning. This aligns perfectly with the workload's tolerance for interruption and its predictable but non-critical schedule.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reserved instances for 1 year
Why it's wrong here
Reserved instances require a longer commitment and may not be cost-effective for 2 hours daily.
- ✓
Spot instances
Why this is correct
Spot instances are cheaper and suitable for interruptible workloads.
- ✗
On-demand instances
Why it's wrong here
On-demand is more expensive for regular, short jobs.
- ✗
Dedicated hosts
Why it's wrong here
Dedicated hosts are expensive and not needed for this workload.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.