Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company manages multiple AWS accounts under AWS Organizations. The finance team needs to set a monthly spending limit for each account, receive automatic email alerts when spending reaches 80% of that limit, and also view a graphical dashboard showing historical cost trends across all accounts. Which combination of AWS services should the company use to meet these requirements?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
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AWS Budgets and Amazon QuickSight
Amazon QuickSight can visualize cost data, but to use it you must first export data via AWS Cost and Usage Reports and configure a data pipeline, which adds complexity. AWS Budgets alone handles the alerting, but the combination with QuickSight is not the simplest or most direct way to meet both requirements. AWS Cost Explorer already provides the needed graphical dashboard without extra setup.
B
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AWS Cost Explorer and Amazon CloudWatch
AWS Cost Explorer provides the graphical dashboard for historical cost trends, but Amazon CloudWatch is designed for monitoring operational metrics (e.g., CPU utilization, latency) and does not provide budget alerting capabilities. CloudWatch Alarms can alert on billing metrics from the Billing and Cost Management console, but that feature is limited to overall account billing alerts, not per-account budgets.
C
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AWS Cost Explorer and AWS Trusted Advisor
AWS Cost Explorer provides the graphical dashboard, and AWS Trusted Advisor includes cost optimization checks (e.g., idle instances, reserved instance recommendations) but does not allow you to set custom budgets or send automatic alerts when spending thresholds are approached.
D
Best answer
AWS Budgets and AWS Cost Explorer
AWS Budgets enables you to define monthly spending limits for each account (or the whole organization) and receive automatic email or SNS alerts when actual or forecasted costs reach a specified percentage of the budget. AWS Cost Explorer provides an intuitive, graphical dashboard that shows historical cost trends across all linked accounts, giving the finance team the visibility they need. This combination directly addresses both requirements without additional overhead.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer needs to launch a test server for a new application prototype. The developer logs into the AWS Management Console, selects an Amazon EC2 instance type, configures the security group, and starts the instance. The instance is running within two minutes, and the developer did not need to submit a formal request to the company's IT procurement team or wait for approval from a cloud administrator. Which essential characteristic of cloud computing does this scenario best demonstrate?
Question 2
A solutions architect is planning a new web application on AWS. The workload will include 3 Amazon EC2 instances (t3.medium) running 24/7, an Application Load Balancer, and an Amazon RDS for MySQL db.t3.small database. The architect needs to estimate the monthly cost for the first year, considering different purchasing options (On-Demand, 1-year All Upfront Reserved Instance, and Compute Savings Plan). Which AWS tool should the architect use to create this estimate?
Question 3
A company's development team frequently needs temporary test environments. A developer can log into the AWS Management Console, select an Amazon EC2 instance type, configure storage, and launch the instance within minutes without any interaction with the IT infrastructure team. This capability is an example of which essential characteristic of cloud computing?
Question 4
A company's finance team needs to analyze AWS spending in detail. They require a report that includes hourly cost data for each AWS service, each individual resource (e.g., a specific EC2 instance), and any cost allocation tags applied. The team plans to export this data to an Amazon S3 bucket and then import it into a custom business intelligence (BI) analytics dashboard. Which AWS tool should the finance team use to generate this level of detailed cost data?
Question 5
A company uses AWS for its development environment. The finance team wants to set a monthly budget of $10,000. They want to receive an email notification when the actual costs reach 80% of the budget ($8,000) and again when costs exceed the budget. The team needs a managed AWS service that can automatically send these alerts without requiring custom code or third-party tools. Which AWS service should the team use?
Question 6
A company uses AWS Organizations to manage multiple accounts. The security team needs to enforce a policy that restricts SSH access (port 22) from the internet (0.0.0.0/0) in all VPCs across all accounts. The team wants to centrally define the allowed rules and automatically apply them to newly created VPCs and security groups, while also automatically remediating any existing non-compliant security groups. Which AWS service should the team use?
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: AWS Budgets and AWS Cost Explorer — AWS Budgets allows you to set custom budgets (monthly, quarterly, etc.) and configure alerts via email or Amazon SNS when actual or forecasted spending exceeds budget thresholds. AWS Cost Explorer provides a pre-built graphical dashboard for visualizing and analyzing your AWS cost and usage data over time, including trends across multiple accounts. Together, these services satisfy the full set of requirements without needing additional services. Option A (AWS Budgets + Amazon QuickSight) is plausible but QuickSight requires setting up a data source like Cost and Usage Reports with additional configuration, making it more complex than necessary. Option B (AWS Cost Explorer + Amazon CloudWatch) is incorrect because CloudWatch is for monitoring operational metrics, not cost budget alerts. Option C (AWS Cost Explorer + AWS Trusted Advisor) is incorrect because Trusted Advisor provides cost optimization recommendations but does not send budget threshold alerts.
What should I do if I get this CLF-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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