AZ-900 Describe cloud concepts Practice Question
A company hosts a customer relationship management (CRM) application on Azure virtual machines. The sales team needs to access the CRM from various locations, including the airport, home, and client offices, using company-issued laptops and personal mobile devices. The application is accessible via a standard web browser over the internet without requiring any special client software or dedicated network connections. Which fundamental characteristic of cloud computing does this scenario primarily demonstrate?
⚠ Common exam trap
Candidates often confuse 'broad network access' with 'on-demand self-service' because both involve user interaction over the internet, but on-demand self-service specifically requires the user to provision or manage resources themselves, not just consume an existing application.
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
✓
Broad network access
The scenario describes users accessing the CRM application from various locations (airport, home, client offices) using different devices (company laptops and personal mobile phones) over the internet via a standard web browser without special client software or dedicated network connections. This directly maps to the cloud computing characteristic of broad network access, which is defined by NIST SP 800-145 as resources that are available over the network and accessed through standard mechanisms (e.g., web browsers, HTTPS) that promote use by heterogeneous client platforms (e.g., mobile phones, laptops, workstations).
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 allows users to provision computing resources (e.g., VMs, storage) as needed without requiring manual approval from the cloud provider's IT staff. The scenario does not describe the users provisioning any resources; they are simply accessing an already-deployed application.
When this WOULD be correct
On-demand self-service would be correct in a scenario where a user can provision virtual machines or storage through a web portal without needing to contact IT or service provider staff, such as a developer spinning up a test server via the Azure portal.
- ✓
Broad network access
Why this is correct
Broad network access means that cloud resources are available over the network through standard mechanisms (e.g., web browser, SSH, RDP) from a variety of client platforms (laptops, mobile phones, tablets). The scenario explicitly describes salespeople accessing the CRM via standard web browsers from any location, without special client software, which perfectly matches this characteristic.
- ✗
Resource pooling
Why it's wrong here
Resource pooling refers to the cloud provider's ability to serve multiple customers using a multi-tenant model, with physical and virtual resources dynamically assigned and reassigned based on demand. While the CRM application may technically run in a pooled environment, the scenario focuses on how users access the application, not on how the underlying infrastructure is shared.
When this WOULD be correct
A question describing how a cloud provider serves multiple customers from the same physical infrastructure, with resources allocated on demand, would make resource pooling the correct answer. For example: 'A cloud provider hosts applications for many clients on shared servers, automatically adjusting resource allocation based on usage.'
- ✗
Rapid elasticity
Why it's wrong here
Rapid elasticity is the ability to quickly scale resources up or down, often automatically, to meet changing demand. The scenario does not mention any scaling activity; it only describes the accessibility of the application from various devices and locations.
When this WOULD be correct
A scenario where a company experiences sudden spikes in CRM usage (e.g., during a product launch) and the cloud automatically provisions additional virtual machines to handle the load, then deprovisions them when demand drops.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-900 exam frequently reuses these exact scenarios with slightly different constraints.
✓Broad network accessCorrect answer▾
Why this is correct
Broad network access means that cloud resources are available over the network through standard mechanisms (e.g., web browser, SSH, RDP) from a variety of client platforms (laptops, mobile phones, tablets). The scenario explicitly describes salespeople accessing the CRM via standard web browsers from any location, without special client software, which perfectly matches this characteristic.
✗On-demand self-serviceWrong answer — click to see why▾
Why this is wrong here
The scenario describes accessing the CRM from various locations using different devices over the internet without special client software. This demonstrates broad network access, not on-demand self-service, which refers to a user's ability to provision computing resources without human interaction.
★ When this WOULD be the correct answer
On-demand self-service would be correct in a scenario where a user can provision virtual machines or storage through a web portal without needing to contact IT or service provider staff, such as a developer spinning up a test server via the Azure portal.
Why candidates choose this
Candidates may confuse the ability to access resources via a browser with self-service provisioning, or they might think that any user-initiated action (like opening a browser) qualifies as on-demand self-service.
✗Resource poolingWrong answer — click to see why▾
Why this is wrong here
Resource pooling refers to the provider's computing resources being pooled to serve multiple customers, with physical and virtual resources dynamically assigned. This scenario focuses on accessibility from various locations and devices, not on multi-tenant resource sharing.
★ When this WOULD be the correct answer
A question describing how a cloud provider serves multiple customers from the same physical infrastructure, with resources allocated on demand, would make resource pooling the correct answer. For example: 'A cloud provider hosts applications for many clients on shared servers, automatically adjusting resource allocation based on usage.'
Why candidates choose this
Candidates may confuse resource pooling with the general concept of cloud computing's shared infrastructure, but the scenario's emphasis on access from anywhere points to broad network access, not pooling.
✗Rapid elasticityWrong answer — click to see why▾
Why this is wrong here
Rapid elasticity refers to the ability to quickly scale resources up or down based on demand, but the scenario emphasizes access from various locations and devices, not scaling.
★ When this WOULD be the correct answer
A scenario where a company experiences sudden spikes in CRM usage (e.g., during a product launch) and the cloud automatically provisions additional virtual machines to handle the load, then deprovisions them when demand drops.
Why candidates choose this
Candidates may confuse the ability to access resources from anywhere with the cloud's ability to scale rapidly, or they may think that accessing the CRM from many locations implies dynamic resource allocation.
Analysis generated from the official AZ-900blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-900 practice question is part of Courseiva's free Microsoft 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 AZ-900 exam.