Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company is migrating its internal email system to a cloud-based solution. After the migration, the company's IT team no longer needs to manage the email servers, apply operating system patches, or upgrade the email software. The cloud provider handles all underlying infrastructure, the platform, and the application itself. Users access their email through a web browser or a mobile app. Which cloud service model does this scenario describe?
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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Infrastructure as a Service (IaaS)
IaaS provides virtualized computing resources (servers, storage, networking) over the internet. The customer would still be responsible for managing the operating system, middleware, and the email application itself, which contradicts the scenario where the IT team no longer manages these components.
B
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Platform as a Service (PaaS)
PaaS provides a platform allowing customers to develop, run, and manage applications without dealing with the underlying infrastructure. However, the customer still manages the application and its data. In this scenario, the application (email software) is fully managed by the provider, which is beyond the scope of PaaS.
C
Best answer
Software as a Service (SaaS)
SaaS delivers a complete application over the internet, fully managed by the provider. The customer only uses the software via a browser or app and has no responsibility for the underlying infrastructure, platform, or application maintenance. This matches the scenario exactly.
D
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On-premises deployment
On-premises deployment involves running the email system on the company's own hardware and software, requiring the IT team to manage all components. The scenario explicitly states the IT team no longer manages servers, patches, or upgrades, so this is incorrect.
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: Software as a Service (SaaS) — This scenario describes Software as a Service (SaaS). In SaaS, the cloud provider delivers a complete application to end users over the internet. The provider manages everything from the underlying hardware and network to the operating system and the application itself. The customer only uses the software, with no responsibility for maintenance or upgrades. This contrasts with Platform as a Service (PaaS), where the customer manages the application and data but not the platform, and with Infrastructure as a Service (IaaS), where the customer manages the operating system, middleware, and applications. On-premises deployment is not a cloud service model and requires the organization to manage all components.
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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