- A
Activate the tag keys for cost allocation tracking.
Correct. After creating and applying tags to resources, the tags must be activated for cost allocation in the AWS Billing and Cost Management console. Only activated tags appear as dimensions in Cost Explorer and other cost management tools.
- B
Enable the AWS Cost Explorer default reports.
Why wrong: Incorrect. Enabling default reports in Cost Explorer provides pre-built visualizations but does not cause tags to become available as filter dimensions. Tag activation is a separate prerequisite.
- C
Create a budget using AWS Budgets with the tag filters.
Why wrong: Incorrect. While budgets can be filtered by tags, the tags must first be activated for cost allocation. Creating a budget does not activate the tags themselves.
- D
Configure the AWS Support plan to include cost analysis.
Why wrong: Incorrect. AWS Support plan level (e.g., Business, Enterprise) does not affect the availability of tag-based cost filtering. Cost allocation tag activation is independent of the Support plan.
Quick Answer
The answer is to activate the tag keys for cost allocation tracking in the Management Account’s Billing and Cost Management console. This step is necessary because, while custom tags may already exist on resources across all accounts, AWS Cost Explorer will not recognize them as filtering dimensions until they are explicitly activated for cost allocation. Without activation, the finance team cannot filter costs by project tags in the consolidated view. On the AWS Certified Cloud Practitioner CLF-C02 exam, this concept tests your understanding of how AWS Organizations and Cost Explorer interact—specifically that tag activation is a separate, required step from simply applying tags. A common trap is assuming that creating and applying tags is enough; the key is remembering that activation is the bridge between tagging resources and seeing those tags as cost dimensions. Memory tip: think of it like turning on a light switch—tags exist (the bulb is there), but activation (flipping the switch) is what makes them illuminate in Cost Explorer.
CLF-C02 Billing, Pricing, and Support Practice Question
This CLF-C02 practice question tests your understanding of billing, pricing, and support. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses multiple AWS accounts managed through AWS Organizations. The finance team wants to see a consolidated view of all costs across accounts, and also wants to filter costs by specific projects using custom tags that are applied to resources. The team has already created tag keys and applied them to resources in all accounts. What additional step must the team take in the Management Account to ensure these tags appear as cost allocation dimensions in AWS Cost Explorer?
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
Activate the tag keys for cost allocation tracking.
Option A is correct because in AWS Organizations, custom tags must be explicitly activated for cost allocation tracking in the Management Account's Billing and Cost Management console. Without this activation, the tags exist on resources but are not recognized as cost allocation dimensions in AWS Cost Explorer, so the finance team cannot filter costs by those tags. Activating the tag keys enables Cost Explorer to ingest the tag key-value pairs and present them as filtering dimensions in cost reports.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Activate the tag keys for cost allocation tracking.
Why this is correct
Correct. After creating and applying tags to resources, the tags must be activated for cost allocation in the AWS Billing and Cost Management console. Only activated tags appear as dimensions in Cost Explorer and other cost management tools.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable the AWS Cost Explorer default reports.
Why it's wrong here
Incorrect. Enabling default reports in Cost Explorer provides pre-built visualizations but does not cause tags to become available as filter dimensions. Tag activation is a separate prerequisite.
- ✗
Create a budget using AWS Budgets with the tag filters.
Why it's wrong here
Incorrect. While budgets can be filtered by tags, the tags must first be activated for cost allocation. Creating a budget does not activate the tags themselves.
- ✗
Configure the AWS Support plan to include cost analysis.
Why it's wrong here
Incorrect. AWS Support plan level (e.g., Business, Enterprise) does not affect the availability of tag-based cost filtering. Cost allocation tag activation is independent of the Support plan.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume applying tags to resources automatically makes them available in Cost Explorer, but AWS requires an explicit activation step in the Management Account to promote custom tags to cost allocation dimensions.
Detailed technical explanation
How to think about this question
Under the hood, AWS Cost Explorer retrieves cost allocation data from the AWS Cost and Usage Report (CUR), which includes only tags that have been activated in the 'Cost Allocation Tags' section of the Billing console. Activation triggers a backend process that adds the tag key to the CUR's resource-level line items, enabling Cost Explorer to aggregate and filter by that tag. A subtle behavior is that activation can take up to 24 hours to propagate, and tags applied to resources before activation will not appear retroactively unless the resources are updated after activation.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Billing, Pricing, and Support — This question tests Billing, Pricing, and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Activate the tag keys for cost allocation tracking. — Option A is correct because in AWS Organizations, custom tags must be explicitly activated for cost allocation tracking in the Management Account's Billing and Cost Management console. Without this activation, the tags exist on resources but are not recognized as cost allocation dimensions in AWS Cost Explorer, so the finance team cannot filter costs by those tags. Activating the tag keys enables Cost Explorer to ingest the tag key-value pairs and present them as filtering dimensions in cost reports.
What should I do if I get this CLF-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This CLF-C02 practice question is part of Courseiva's free Amazon Web Services 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 CLF-C02 exam.
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