- A
Multi-tenancy
Why wrong: Incorrect. Multi-tenancy is a common feature of public clouds but not listed as an essential characteristic by NIST.
- B
Resource pooling
Correct. Resource pooling is one of the five essential characteristics.
- C
Virtualization
Why wrong: Incorrect. Virtualization is a technology that enables cloud computing but is not an essential characteristic.
- D
On-demand self-service
Correct. On-demand self-service is one of the five essential characteristics.
- E
Measured service
Correct. Measured service is one of the five essential characteristics.
CCSP Cloud Concepts, Architecture and Design Practice Question
This CCSP practice question tests your understanding of cloud concepts, architecture and design. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which THREE of the following are essential characteristics of cloud computing as defined by NIST SP 800-145?
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 correct because NIST SP 800-145 defines it as one of the five essential characteristics, where the provider's computing resources are pooled to serve multiple consumers using a multi-tenant model, with physical and virtual resources dynamically assigned and reassigned according to consumer demand. This enables economies of scale and location independence, as the customer generally has no control or knowledge over the exact location of the provided resources.
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.
- ✗
Multi-tenancy
Why it's wrong here
Incorrect. Multi-tenancy is a common feature of public clouds but not listed as an essential characteristic by NIST.
- ✓
Resource pooling
Why this is correct
Correct. Resource pooling is one of the five essential characteristics.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Virtualization
Why it's wrong here
Incorrect. Virtualization is a technology that enables cloud computing but is not an essential characteristic.
- ✓
On-demand self-service
Why this is correct
Correct. On-demand self-service is one of the five essential characteristics.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Measured service
Why this is correct
Correct. Measured service is one of the five essential characteristics.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the distinction between 'multi-tenancy' (a design goal) and 'resource pooling' (the NIST-defined characteristic), and between 'virtualization' (an implementation detail) and the essential characteristics, leading candidates to incorrectly select options that are common in cloud but not in the NIST definition.
Detailed technical explanation
How to think about this question
Resource pooling relies on hypervisor-level or orchestration-layer abstraction to aggregate CPU, memory, storage, and network capacity from a physical infrastructure, then allocate slices to tenants via mechanisms like cgroups, KVM, or VMware vSphere. In practice, this allows a cloud provider to overcommit resources (e.g., 2:1 memory overcommit) while maintaining isolation, but it also introduces the 'noisy neighbor' problem where one tenant's burst activity can degrade another's performance if QoS controls like CPU pinning or network shaping are not applied.
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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
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.
- →
Cloud Concepts, Architecture and Design — study guide chapter
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FAQ
Questions learners often ask
What does this CCSP question test?
Cloud Concepts, Architecture and Design — This question tests Cloud Concepts, Architecture and Design — 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 correct because NIST SP 800-145 defines it as one of the five essential characteristics, where the provider's computing resources are pooled to serve multiple consumers using a multi-tenant model, with physical and virtual resources dynamically assigned and reassigned according to consumer demand. This enables economies of scale and location independence, as the customer generally has no control or knowledge over the exact location of the provided resources.
What should I do if I get this CCSP 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.
About these practice questions
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Last reviewed: Jun 30, 2026
This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.
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