MS-900 Describe cloud concepts Practice Test 6 — 15 Questions

Question 1

During requirements gathering, an IT manager says the organization must compare service models and identify where the customer manages the most layers. Cloud concept or benefit best matches this requirement?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Infrastructure as a Service (IaaS). The IT manager's requirement is to identify the service model where the customer manages the most layers. In Infrastructure as a Service (IaaS), the cloud provider manages only the physical infrastructure (servers, storage, networking), while the customer is responsible for managing the operating system, middleware, runtime, data, and applications. This gives the customer the highest degree of control and management responsibility compared to PaaS or SaaS.

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Platform as a Service (PaaS)

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Software as a Service (SaaS)

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Hybrid cloud

Question 2

A help desk lead is documenting the correct Microsoft 365 approach to increase from 100 to 2,000 users without buying new mail servers. Cloud concept or benefit best matches this requirement?

Accepted Answer

Scalability. Scalability is the correct answer because it refers to the ability of a cloud service like Microsoft 365 to dynamically allocate resources to accommodate growth from 100 to 2,000 users without requiring the purchase or provisioning of additional on-premises mail servers. Microsoft 365's multi-tenant architecture and elastic infrastructure automatically handle user load increases, making scalability the cloud concept that directly matches this requirement.

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Data Loss Prevention (DLP)

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Sensitivity labels

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Microsoft Planner

Question 3

A compliance-aware administrator is selecting the right Microsoft 365 capability to explain why providers can lower unit costs by operating at large scale. Cloud concept or benefit best matches this requirement?

Accepted Answer

Economies of scale. Economies of scale is the correct answer because it directly describes the cost advantage that cloud providers achieve by operating at massive scale. By aggregating compute, storage, and network resources across millions of customers, providers like Microsoft can spread fixed costs (data centers, hardware, cooling, staffing) over a larger base, reducing the per-unit cost for each tenant. This is a foundational cloud concept, not a specific security or productivity feature.

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Sensitivity labels

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Microsoft Planner

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Data Loss Prevention (DLP)

Question 4

A department head asks which Microsoft 365 option should be used to review uptime commitments for Microsoft cloud services. Cloud concept or benefit best matches this requirement?

Accepted Answer

Service Level Agreement (SLA). The Service Level Agreement (SLA) is the correct choice because it is the formal document published by Microsoft that defines the uptime commitments, availability guarantees, and financial remedies for Microsoft cloud services. The department head needs to review uptime commitments, which is exactly what the SLA covers, not a security or project management feature.

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Data Loss Prevention (DLP)

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Microsoft Planner

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Sensitivity labels

Question 5

An administrator is reviewing a request from users who need to avoid overprovisioning for a seasonal workload. Cloud concept or benefit best matches this requirement?

Accepted Answer

Rapid elasticity. Rapid elasticity is a core cloud computing characteristic defined by NIST (SP 800-145) that allows resources to scale out and in automatically based on demand. For a seasonal workload, this means the cloud can provision additional compute or storage capacity during peak periods and release it when demand drops, preventing overprovisioning and optimizing costs.

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Data Loss Prevention (DLP)

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Sensitivity labels

Answer

Microsoft Planner

Question 6

During a Microsoft 365 planning workshop, explain why Microsoft 365 is cloud-based despite local Office apps. Cloud concept or benefit best matches this requirement?

Accepted Answer

Cloud-hosted service backend. Microsoft 365 is considered cloud-based because its core services—such as Exchange Online, SharePoint Online, and the Microsoft 365 admin portal—are hosted and managed in Microsoft's cloud datacenters. Even though local Office apps (e.g., Word, Excel) run on the client device, they rely on a cloud-hosted service backend for licensing validation, data synchronization, and feature updates. This backend enables centralized management, automatic updates, and seamless integration with cloud services like OneDrive and Teams, which is the defining characteristic of a cloud-based platform.

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Microsoft Planner

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Data Loss Prevention (DLP)

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Sensitivity labels

Question 7

A tenant administrator is advising a department that wants to stop maintaining local file servers by using managed cloud storage. Cloud concept or benefit best matches this requirement?

Accepted Answer

Reduced infrastructure maintenance. Moving from on-premises file servers to managed cloud storage (e.g., Microsoft OneDrive, SharePoint Online, or Azure Files) eliminates the need for the department to handle hardware procurement, patching, backups, and physical maintenance. This directly aligns with the cloud benefit of reduced infrastructure maintenance, a core concept in the MS-900 exam's 'Describe cloud concepts' domain.

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Sensitivity labels

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Microsoft Planner

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Data Loss Prevention (DLP)

Question 8

While preparing a Microsoft 365 adoption plan, a consultant is asked to avoid buying servers upfront and pay monthly based on usage. Cloud concept or benefit best matches this requirement?

Accepted Answer

Operational expenditure (OpEx) model. The operational expenditure (OpEx) model is correct because it aligns with the requirement to avoid upfront capital investment (CapEx) and instead pay monthly based on usage. In Microsoft 365, this is delivered through subscription-based licensing (e.g., per-user per-month plans), which shifts costs from large upfront server purchases to predictable monthly payments that scale with consumption.

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Sensitivity labels

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Data Loss Prevention (DLP)

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Microsoft Planner

Question 9

A service owner is comparing Microsoft 365 capabilities and needs to host custom applications on virtual machines while managing the operating system. Cloud concept or benefit best matches this requirement?

Accepted Answer

Infrastructure as a Service (IaaS). Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet, including virtual machines where the user manages the operating system and can host custom applications. This matches the requirement because the service owner needs full control over the OS and the ability to deploy custom applications without managing physical hardware.

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Platform as a Service (PaaS)

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Hybrid cloud

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Software as a Service (SaaS)

Question 10

During requirements gathering, an IT manager says the organization must compare service models and identify where the customer manages the most layers. Cloud concept or benefit best matches this requirement?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Platform as a Service (PaaS). Platform as a Service (PaaS) is the correct choice because it provides a managed hosting environment where you can deploy your own application code without needing to manage the underlying operating system or runtime platform. The IT manager's requirement explicitly states they want to avoid maintaining the OS and runtime, which is the core value proposition of PaaS. In contrast, IaaS would require them to manage the OS and runtime themselves.

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Private cloud

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Infrastructure as a Service (IaaS)

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Software as a Service (SaaS)

Question 11

A help desk lead is documenting the correct Microsoft 365 approach to use hosted email without managing mail servers. Cloud concept or benefit best matches this requirement?

Accepted Answer

Software as a Service (SaaS). Microsoft 365's Exchange Online delivers hosted email as a Software as a Service (SaaS) offering. This means Microsoft manages the mail servers, software updates, and infrastructure, while the help desk lead simply configures user mailboxes and policies via the admin center. SaaS is the cloud model where the provider hosts and manages the entire application, aligning perfectly with the requirement to avoid managing mail servers.

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Platform as a Service (PaaS)

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Community cloud

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Infrastructure as a Service (IaaS)

Question 12

A compliance-aware administrator is selecting the right Microsoft 365 capability to add and remove capacity quickly when demand changes. Cloud concept or benefit best matches this requirement?

Accepted Answer

Rapid elasticity. Rapid elasticity is a core cloud computing concept defined by NIST (SP 800-145) that allows resources to be provisioned and released automatically in response to demand. In Microsoft 365, this is demonstrated by the ability to add or remove user licenses (e.g., via the Microsoft 365 admin center or PowerShell) on a per-seat basis, scaling capacity up or down almost instantly without manual infrastructure changes.

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Microsoft Planner

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Data Loss Prevention (DLP)

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Sensitivity labels

Question 13

A department head asks which Microsoft 365 option should be used to meter compute and storage usage for consumption-based billing. Cloud concept or benefit best matches this requirement?

Accepted Answer

Measured service. Measured service is a core cloud computing concept where resource usage (compute, storage, network) is metered and billed based on actual consumption. In Microsoft 365, this aligns with consumption-based billing models like pay-as-you-go for Azure services or per-user licensing adjustments, enabling cost transparency and optimization.

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Sensitivity labels

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Microsoft Planner

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Data Loss Prevention (DLP)

Question 14

An administrator is reviewing a request from users who need to let users provision resources from a portal without provider interaction. Cloud concept or benefit best matches this requirement?

Accepted Answer

On-demand self-service. The requirement describes users provisioning resources from a portal without provider interaction, which is the core definition of on-demand self-service as defined by NIST SP 800-145. In Microsoft 365, this maps to capabilities like users creating Teams, SharePoint sites, or Azure resources via self-service portals without IT intervention.

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Data Loss Prevention (DLP)

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Microsoft Planner

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Sensitivity labels

Question 15

During a Microsoft 365 planning workshop, keep a workload on-premises while using Microsoft cloud collaboration services. Cloud concept or benefit best matches this requirement?

Accepted Answer

Hybrid cloud. A hybrid cloud model is the correct answer because it explicitly describes a scenario where an organization keeps certain workloads on-premises while integrating with Microsoft cloud collaboration services like Microsoft 365. This allows for a unified management plane, identity federation via Microsoft Entra Connect, and seamless data synchronization between on-premises infrastructure and cloud services such as Exchange Online, SharePoint Online, or Teams.

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Sensitivity labels

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Microsoft Planner

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Data Loss Prevention (DLP)