A cloud provider houses multiple customers' virtual machines on the same physical server hardware. Each customer's data and applications are logically isolated, and customers have no knowledge or control over exactly which physical resources they are using. This scenario best describes which essential characteristic of cloud computing?

On-demand self-service

This describes the ability to provision resources automatically without requiring human interaction with each service provider, not the sharing of physical resources.

Broad network access

This refers to resources being available over the network and accessed through standard mechanisms, not the multi-tenant sharing of physical hardware.

Measured service

This is the capability to monitor, control, and report usage for billing purposes, not the pooling of resources.

What does this 220-1101 question test?

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 cloud computing characteristic where the provider's computing resources are pooled to serve multiple customers using a multi-tenant model, with physical and virtual resources dynamically assigned and reassigned according to customer demand. This allows the provider to achieve economies of scale while maintaining logical isolation between customers. On-demand self-service refers to the ability to provision resources without human interaction. Broad network access means resources are accessible over the network via standard protocols. Measured service means usage is monitored, controlled, and reported, enabling billing.

What should I do if I get this 220-1101 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.