- A
On-demand self-service
Why wrong: On-demand self-service refers to a user's ability to provision computing capabilities automatically without requiring human interaction with each service provider. It does not describe the shared hardware model.
- B
Resource pooling
Resource pooling is the cloud characteristic where the provider's computing resources are pooled to serve multiple customers using a multi-tenant model. This directly addresses the CIO's concern about shared physical hardware, and AWS implements strong isolation mechanisms to prevent data exposure.
- C
Measured service
Why wrong: Measured service means cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction. It relates to billing and usage monitoring, not the sharing of physical infrastructure.
- D
Broad network access
Why wrong: Broad network access means resources are available over the network and accessed through standard mechanisms (e.g., mobile phones, laptops). It does not describe the multi-tenant sharing of hardware.
Quick Answer
The answer is resource pooling. This cloud computing characteristic directly describes the multi-tenant model where a provider’s computing resources—such as physical servers, storage, and network—are aggregated to serve multiple customers simultaneously. In AWS, hypervisor-level isolation, using technologies like the Nitro hypervisor, allows many virtual servers (EC2 instances) to run on the same physical host while enforcing strict memory and I/O separation, preventing data exposure between tenants. On the AWS Certified Cloud Practitioner CLF-C02 exam, this concept tests your understanding of the shared responsibility model and the foundational pillar of multi-tenancy. A common trap is confusing resource pooling with elasticity or scalability; remember that pooling is about sharing infrastructure, not scaling. For a memory tip, think of a large apartment building: many tenants share the same physical structure (pooled resources), but each has a locked, isolated unit—just like your EC2 instance on a shared host.
CLF-C02 Cloud Concepts Practice Question
This CLF-C02 practice question tests your understanding of cloud concepts. 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 mid-size company is planning to migrate its IT infrastructure to the AWS Cloud. The Chief Information Officer (CIO) expresses concern that multiple customers' virtual servers might run on the same physical hardware, potentially increasing the risk of data exposure. Which cloud computing characteristic describes this shared infrastructure model, where computing resources are pooled to serve multiple customers using a multi-tenant model?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Resource pooling
Resource pooling is the correct answer because it directly describes the multi-tenant model where the provider's computing resources (such as physical servers, storage, and network) are pooled to serve multiple customers. In AWS, this is achieved through hypervisor-level isolation (e.g., Xen or Nitro hypervisors) that allows multiple virtual servers (EC2 instances) to run on the same physical host while maintaining strict memory and I/O separation, preventing data exposure between tenants.
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.
- ✗
On-demand self-service
Why it's wrong here
On-demand self-service refers to a user's ability to provision computing capabilities automatically without requiring human interaction with each service provider. It does not describe the shared hardware model.
- ✓
Resource pooling
Why this is correct
Resource pooling is the cloud characteristic where the provider's computing resources are pooled to serve multiple customers using a multi-tenant model. This directly addresses the CIO's concern about shared physical hardware, and AWS implements strong isolation mechanisms to prevent data exposure.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Measured service
Why it's wrong here
Measured service means cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction. It relates to billing and usage monitoring, not the sharing of physical infrastructure.
- ✗
Broad network access
Why it's wrong here
Broad network access means resources are available over the network and accessed through standard mechanisms (e.g., mobile phones, laptops). It does not describe the multi-tenant sharing of hardware.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse resource pooling with multi-tenancy as a security risk, but AWS's shared responsibility model and hypervisor isolation ensure that resource pooling does not inherently increase data exposure risk.
Detailed technical explanation
How to think about this question
Under the hood, AWS uses the Nitro hypervisor, which offloads virtualization functions to dedicated hardware (Nitro cards) and provides bare-metal-like performance with strong isolation via memory encryption and dedicated I/O paths. In a real-world scenario, if a customer's EC2 instance is compromised, the hypervisor enforces strict memory and disk isolation (e.g., using EBS volume encryption at rest) to prevent any cross-tenant data leakage, even if multiple instances share the same physical host.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Concepts — This question tests Cloud Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Resource pooling — Resource pooling is the correct answer because it directly describes the multi-tenant model where the provider's computing resources (such as physical servers, storage, and network) are pooled to serve multiple customers. In AWS, this is achieved through hypervisor-level isolation (e.g., Xen or Nitro hypervisors) that allows multiple virtual servers (EC2 instances) to run on the same physical host while maintaining strict memory and I/O separation, preventing data exposure between tenants.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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.
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