Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company has been using AWS for six months and wants to predict their expected spending for the next quarter. They have historical cost data and need to use an AWS tool that can analyze past usage patterns and generate a monthly cost forecast. Which AWS tool should they use?
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
Best answer
AWS Cost Explorer
AWS Cost Explorer includes a forecasting feature that automatically generates monthly cost predictions based on historical usage, making it the correct tool for this requirement.
B
Distractor review
AWS Budgets
AWS Budgets allows you to set cost and usage budgets and receive alerts when you exceed or are forecasted to exceed them, but it does not generate standalone historical forecasts. The forecasting feature is part of Cost Explorer.
C
Distractor review
AWS Trusted Advisor
AWS Trusted Advisor provides recommendations for cost optimization, security, performance, and fault tolerance, but it does not generate cost forecasts based on historical data.
D
Distractor review
AWS Cost and Usage Report
The AWS Cost and Usage Report provides the most detailed billing data, which can be used with external tools for forecasting, but it does not have a built-in forecasting capability. The tool itself does not generate predictions.
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 Cost Explorer — AWS Cost Explorer provides a built-in forecasting feature that analyzes historical cost and usage data to predict future spending. This allows users to view projected costs for the next 12 months, helping with budgeting and planning. AWS Budgets is used for setting cost limits and alerts, not for generating standalone forecasts. AWS Trusted Advisor offers best practice recommendations, including cost optimization, but does not generate cost forecasts. The AWS Cost and Usage Report is a detailed raw data file that can be used with other tools for forecasting, but it does not itself provide a forecast.
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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