hardMultiple ChoiceObjective-mapped
CV0-004 Practice Question: A cloud administrator is managing a fleet of…
A cloud administrator is managing a fleet of virtual machines that run a batch processing job. The job is memory-intensive and runs once a day. The administrator wants to optimize cost without affecting performance. Which of the following is the BEST approach?
⚠ Common exam trap
Cloud+ exam often tests the misconception that manual shutdown (Option C) is a valid cost optimization strategy, but the trap is that it ignores automation and the significant savings from using spot instances for fault-tolerant workloads.
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
✓
Use a mix of reserved instances for the minimum required capacity and spot instances to handle the daily workload
It combines reserved instances for the baseline capacity needed daily, ensuring cost savings through a 1- or 3-year commitment, with spot instances for the memory-intensive batch workload. Spot instances can handle the peak demand at a significantly lower cost (often 60-90% discount) without affecting performance, as the batch job is fault-tolerant and can be interrupted. This hybrid approach optimizes cost while maintaining the required performance for the daily job.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Purchase dedicated hosts to ensure resource isolation
Why it's wrong here
Dedicated hosts are expensive and not needed for batch jobs.
- ✓
Use a mix of reserved instances for the minimum required capacity and spot instances to handle the daily workload
Why this is correct
Reserved instances provide discount; spot instances offer cheap compute for tolerant jobs.
- ✗
Manually shut down instances when the job completes
Why it's wrong here
Manual intervention is not scalable and may miss cost savings opportunities.
- ✗
Use only on-demand instances to avoid commitment
Why it's wrong here
On-demand is most expensive for regular workloads.
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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.