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CV0-004 Practice Question: Which TWO of the following are best practices for…
Which TWO of the following are best practices for managing cloud costs? (Select TWO.)
⚠ Common exam trap
Cloud+ often tests the misconception that manual actions (like stopping VMs by hand) are a best practice, when in fact automation and right-sizing are the recommended approaches for consistent cost management.
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
✓
Implementing resource tagging for cost allocation
Option A is correct because resource tagging attaches metadata (such as cost center, owner, project, or environment) to cloud resources, which enables accurate cost allocation, chargeback/showback reporting, and identification of untagged or wasteful spending in cost management tools. Option C is correct because reserved instances (or equivalent commitment-based discounts like savings plans) provide significant discounts—often up to 72% versus pay-as-you-go—for steady-state, predictable workloads, making them a core cost-optimization practice. Option B is not a best practice because consolidating all environments into a single subscription reduces cost visibility, complicates access control and budgeting, and can prevent applying environment-specific policies or discounts. Option D is wrong because overprovisioning wastes money on unused capacity and directly contradicts cost optimization, even if it may boost performance. Option E is not a recommended best practice because manually stopping idle VMs is error-prone, unscalable, and inconsistent; automated scheduling, auto-scaling, or rightsizing should be used instead.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Implementing resource tagging for cost allocation
Why this is correct
Tagging resources with metadata such as owner, project and environment enables cost allocation, chargeback and identification of untagged or orphaned spend. This satisfies the stem's cost-management best practice by making consumption attributable, which underpins budgeting, forecasting and anomaly detection across cloud accounts.
- ✗
Consolidating all environments into a single subscription
Why it's wrong here
A single subscription removes the billing boundary that per-environment cost allocation and budgets rely on, hiding which workload drives spend. It is tempting because consolidated billing reduces administrative overhead, and would suit a small organisation with one team and no chargeback requirement.
- ✓
Using reserved instances for predictable workloads
Why this is correct
Reserved instances commit to a one- or three-year term in exchange for a significant discount versus on-demand pricing, directly satisfying the predictability constraint. Applying them to stable, forecastable workloads lowers the unit compute cost without sacrificing capacity.
- ✗
Overprovisioning resources to ensure high performance
Why it's wrong here
Overprovisioning pays for capacity the workload never consumes, inflating compute and storage charges with no cost-control benefit. It is tempting as insurance against performance shortfalls, and would be correct for a latency-critical workload with unpredictable, spiky demand where headroom is contractually required.
- ✗
Manually stopping idle virtual machines
Why it's wrong here
Manual stopping depends on someone noticing idle VMs, so instances run unattended outside working hours and costs accrue. It is tempting because it needs no tooling and gives immediate control, and would suit a handful of non-production VMs with predictable, infrequent use.
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JA
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.