Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
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?
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
On-demand self-service
Correct. On-demand self-service means a user can provision computing capabilities as needed automatically without requiring human interaction with each service provider. The developer launched an EC2 instance directly via the console with no IT intervention, perfectly matching this characteristic.
B
Distractor review
Broad network access
Incorrect. Broad network access means that resources are available over the network and can be accessed by standard mechanisms from various client platforms (e.g., mobile phones, laptops, workstations). While the developer used the console over the internet, the core of the scenario is about the ability to provision resources without human interaction, not the variety of access methods.
C
Distractor review
Resource pooling
Incorrect. Resource pooling refers to the provider's computing resources being pooled to serve multiple customers using a multi-tenant model, with physical and virtual resources dynamically assigned according to customer demand. This scenario does not demonstrate multi-tenancy or shared infrastructure; it focuses on the ease and speed of provisioning.
D
Distractor review
Rapid elasticity
Incorrect. Rapid elasticity is the ability to quickly scale resources up or out and down or in, often automatically, to match demand. While AWS does support elasticity, this scenario describes the initial provisioning of a single test server without any scaling action. The key aspect is the self-service capability, not the scaling itself.
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 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 2
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 3
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 4
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 5
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?
Question 6
A company archives historical transaction records in Amazon S3. The records are accessed frequently for the first 30 days after creation. After 30 days, access drops sharply to only a few times per year, but the company must be able to retrieve any record within 5 minutes if needed. The company wants to minimize storage costs while meeting the retrieval time requirement. Which combination of S3 storage classes should the company 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: On-demand self-service — This scenario illustrates the 'on-demand self-service' characteristic, one of the five essential attributes defined by NIST (National Institute of Standards and Technology) for cloud computing. On-demand self-service allows users to provision and manage computing resources (such as virtual machines, storage, or databases) automatically, without requiring human interaction with the service provider. AWS enables this through the Management Console, CLI, SDKs, and APIs, giving developers immediate access to resources when needed. The absence of manual approval or procurement delays is the key feature. The other options represent other core cloud characteristics: broad network access (access from various client devices), resource pooling (multi-tenancy and location independence), and rapid elasticity (automatic scaling based on demand).
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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