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An e-commerce company hosts its website on a public cloud IaaS platform. The site experiences varying traffic throughout the year. The cloud provider automatically adds more virtual servers during peak traffic and removes them when demand drops. The company only pays for the resources used during each period. Which two cloud characteristics are demonstrated? (Choose two.)

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An e-commerce company hosts its website on a public cloud IaaS platform. The site experiences varying traffic throughout the year. The cloud provider automatically adds more virtual servers during peak traffic and removes them when demand drops. The company only pays for the resources used during each period. Which two cloud characteristics are demonstrated? (Choose two.)

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

Rapid elasticity

Correct. The automatic addition and removal of VMs based on traffic demonstrates rapid elasticity.

B

Best answer

Measured service

Correct. Paying only for the resources used is a demonstration of measured service (metered billing).

C

Distractor review

On-demand self-service

Incorrect. While the company can provision resources without human interaction, the scenario emphasizes automatic scaling rather than user-initiated provisioning.

D

Distractor review

Resource pooling

Incorrect. Resource pooling refers to the provider serving multiple customers from shared infrastructure, which is not directly illustrated by the scaling scenario.

Common exam trap

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Technical deep dive

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • 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.

Related practice questions

Related MS-900 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

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.

FAQ

Questions learners often ask

What does this MS-900 question test?

Read the scenario before looking for a memorised answer.

What is the correct answer to this question?

The correct answer is: Rapid elasticity — Rapid elasticity allows automatic scaling of resources to handle demand changes. Measured service ensures the company pays only for the resources consumed. Together, they enable cost-efficient handling of variable workloads. On-demand self-service and resource pooling are also cloud characteristics but are not directly demonstrated by the scenario of automatic scaling and pay-per-use.

What should I do if I get this MS-900 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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