The answer is basic monitoring for EC2 instances, which provides metrics at five-minute intervals without incurring additional charges beyond the CloudWatch free tier. This is because basic monitoring is included as a standard, no-cost feature of EC2, collecting and storing essential performance data like CPU utilization and network throughput at a default five-minute granularity. In contrast, detailed monitoring pushes metrics every minute, requiring more frequent data collection and storage, which triggers per-metric charges. On the AWS Certified Cloud Practitioner CLF-C02 exam, this distinction tests your understanding of the CloudWatch free tier limits and common cost traps—many candidates mistakenly assume all CloudWatch usage is free or that detailed monitoring is included. A reliable memory tip: think “5 is free, 1 is fee”—five-minute intervals stay free, while one-minute intervals incur fees.
CLF-C02 Billing, Pricing, and Support Practice Question
This CLF-C02 practice question tests your understanding of billing, pricing, and support. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 is reviewing their AWS bill and notices charges for Amazon CloudWatch. Which specific CloudWatch usage would NOT incur additional charges beyond the CloudWatch free tier?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "NOT"
Why it matters: Negative qualifier — you are looking for the one option that does NOT apply. Most options will be true; only one is false for this scenario.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Basic monitoring (5-minute metrics) for EC2 instances
Basic monitoring for EC2 instances provides metrics at 5-minute intervals at no additional cost, as it is included in the CloudWatch free tier. Detailed monitoring (1-minute metrics) incurs charges because it requires more frequent data collection and storage. Therefore, basic monitoring is the only option that does not generate extra charges beyond the free tier.
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.
✗
Detailed monitoring (1-minute metrics) for EC2 instances
Why it's wrong here
Detailed monitoring (1-minute intervals) incurs additional charges — Basic monitoring (5-minute) is free for EC2.
✓
Basic monitoring (5-minute metrics) for EC2 instances
Why this is correct
CloudWatch Basic monitoring providing 5-minute EC2 metrics is included at no additional charge — it's automatically enabled for all EC2 instances.
Clue confirmation
The clue word "NOT" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
CloudWatch Logs charges for data ingested beyond the monthly free tier and for log archival storage beyond the first month.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume all CloudWatch monitoring is free, but AWS specifically charges for detailed monitoring and custom metrics beyond the free tier limits, while basic monitoring remains free to encourage foundational observability without upfront costs.
Detailed technical explanation
How to think about this question
CloudWatch metrics are stored as data points with timestamps and values; basic monitoring sends one data point every 5 minutes (288 per day per instance), while detailed monitoring sends one every minute (1,440 per day per instance), significantly increasing storage and API costs. In real-world scenarios, companies often enable detailed monitoring for Auto Scaling groups or critical production instances to enable faster scaling decisions, but must budget for the per-instance hourly cost. The free tier for custom metrics is limited to 10 metrics, each with up to 10 alarms, and exceeding this triggers pay-per-metric charges.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
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: Basic monitoring (5-minute metrics) for EC2 instances — Basic monitoring for EC2 instances provides metrics at 5-minute intervals at no additional cost, as it is included in the CloudWatch free tier. Detailed monitoring (1-minute metrics) incurs charges because it requires more frequent data collection and storage. Therefore, basic monitoring is the only option that does not generate extra charges beyond the free tier.
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.
Are there clue words in this question I should notice?
Yes — watch for: "NOT". Negative qualifier — you are looking for the one option that does NOT apply. Most options will be true; only one is false for this scenario.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.