Microsoft MS-900 Exam Dumps & Practice Test Questions

Question 1:

Your company is migrating its IT systems to Microsoft Azure. During planning, a team member asserts: Which option best clarifies or confirms the underlined part?

A. No adjustment required
B. Applications that handle sensitive data
C. Applications requiring USB-token access
D. All legacy applications

Answer: B

Explanation:

When transitioning IT infrastructure to the cloud, especially to platforms like Microsoft Azure, many organizations adopt a hybrid approach—some services remain on-premises while others move fully to the cloud. However, it is inaccurate to claim that all applications will stay hybrid post-migration. This blanket statement oversimplifies the complexities involved in cloud adoption.

Typically, only certain applications continue to operate in a hybrid mode. For example, applications managing highly sensitive or regulated data—such as healthcare records, financial information, or government documents—may remain on-premises or in a hybrid state due to compliance, security policies, or data residency requirements. This ensures sensitive information is safeguarded under organizational or legal controls that may not be fully achievable in a public cloud environment.

In contrast, applications with fewer regulatory constraints or those that benefit from cloud scalability and reduced maintenance are often migrated fully to Azure. These applications can leverage cloud-native benefits such as elastic scaling, cost optimization, and simplified management.

Option B — applications that handle sensitive data — best replaces the inaccurate statement. It recognizes that only certain critical apps remain hybrid, not the entire application portfolio.

Options C and D are less precise. USB-token access requirements (Option C) may affect only a few applications and don’t broadly determine hybrid status. Meanwhile, not all legacy applications (Option D) remain hybrid; many are modernized and fully moved to the cloud. Thus, B provides the most accurate correction consistent with typical migration strategies.

Question 2:

Your company plans to migrate its email infrastructure to the cloud and reduce server and application maintenance responsibilities. You suggest using the Platform as a Service (PaaS) cloud model. 

Does this recommendation meet the company’s goals?

A. Yes
B. No

Answer: A

Explanation:

To determine whether PaaS is a suitable choice, it’s important to understand what this cloud service model offers and how it aligns with the organization's objectives.

Platform as a Service (PaaS) delivers a managed environment where organizations can deploy and run applications without worrying about the underlying infrastructure—servers, storage, or networking. PaaS providers handle the operating system, middleware, and runtime maintenance, allowing companies to focus on application development and usage.

The two goals here are:

1. Upgrading the email infrastructure

2. Reducing maintenance overhead on servers and applications

PaaS perfectly suits these requirements. For example, Microsoft Exchange Online (part of Microsoft 365) is a cloud-hosted email platform offered as PaaS. It enables organizations to modernize their email system without managing physical servers or software updates. Microsoft handles patching, backups, scaling, and security.

By adopting PaaS for email, your IT team no longer needs to maintain on-premises servers, freeing resources for other projects. Additionally, cloud-based email platforms offer enhanced features, better reliability, and easier scalability.

In contrast, Infrastructure as a Service (IaaS) would require maintaining operating systems and software on virtual machines, increasing overhead. Software as a Service (SaaS) offers even more abstraction but sometimes at the cost of flexibility; PaaS strikes a balance by reducing maintenance while retaining some control.

Therefore, recommending PaaS meets both key objectives—modernizing the email infrastructure and minimizing maintenance duties—making option A the correct answer.

Question 3:

Your company is planning to migrate its on-premises email servers to the cloud. The leadership team’s goals are:

• Upgrade to a modern cloud-based email system

• Eliminate or greatly reduce server and application maintenance tasks

You are evaluating Infrastructure as a Service (IaaS) as the solution. Does IaaS fulfill these requirements?

A. Yes
B. No

Answer: B

Explanation:

Infrastructure as a Service (IaaS) provides virtualized computing resources like servers, storage, and networking over the internet. While it removes the need to manage physical hardware, it requires customers to manage everything above the hardware layer—including operating systems, middleware, applications, patches, updates, and backups.

In this scenario, migrating the email environment using IaaS means your IT team would deploy virtual machines in the cloud and install or migrate your email server software (e.g., Microsoft Exchange). Your team remains responsible for maintaining the OS, managing security patches, configuring the email software, and troubleshooting.

This approach contradicts the leadership’s goal to minimize or eliminate server and application maintenance. The internal team’s workload for managing the email platform remains largely unchanged compared to on-premises setups.

A better fit is Software as a Service (SaaS), where the entire email solution is hosted and managed by the provider (e.g., Microsoft 365 Exchange Online). SaaS eliminates the need for server or software maintenance internally, allowing the organization to benefit from cloud scalability, high availability, and simplified operations.

Hence, while IaaS offers cloud infrastructure benefits, it does not meet the goal of reducing IT maintenance burdens. Option B is the correct choice since IaaS falls short of fulfilling the outlined requirements.

Question 4:

Your organization is planning to migrate to the cloud to modernize its IT infrastructure, focusing on upgrading the existing on-premises email system. The leadership requires a solution that not only modernizes the email platform but also significantly reduces or eliminates the maintenance workload for internal IT staff. Considering these objectives, 

Which cloud computing model best fits the organization’s needs? Does the suggested model meet these goals?

A. Yes
B. No

Correct Answer: A

Explanation:

The most appropriate cloud computing model for this scenario is Software as a Service (SaaS), and it perfectly meets the organization’s goals of modernization and maintenance reduction. SaaS solutions provide fully managed applications hosted by third-party cloud providers, freeing organizations from the complexities of maintaining hardware and software.

For email systems, SaaS platforms like Microsoft 365 (Exchange Online), Google Workspace (Gmail), and Zoho Mail offer comprehensive, enterprise-grade email services hosted entirely in the cloud. These platforms provide modern user interfaces accessible from any device, integrated collaboration tools, advanced security features, and compliance capabilities. This represents a substantial upgrade from traditional on-premises email servers, which require continuous maintenance and hardware management.

A key advantage of SaaS is that the cloud provider handles everything from infrastructure provisioning and server maintenance to application updates, security patches, and backups. This means your internal IT team no longer needs to spend time on server installation, patch management, troubleshooting, or software upgrades, significantly reducing operational overhead.

In contrast, other cloud models like Infrastructure as a Service (IaaS) or Platform as a Service (PaaS) may still require your organization to manage the operating systems or applications, which does not fully relieve IT from maintenance tasks.

Moreover, SaaS solutions scale easily with business needs and offer high availability with built-in redundancy and disaster recovery, ensuring a robust and reliable email experience.

Therefore, recommending the SaaS model fully aligns with both the business requirement to modernize the email system and the technical need to reduce maintenance burdens, making the answer Yes.

Question 5:

Your company is developing a web-based inventory application using Microsoft Azure’s Platform as a Service (PaaS). Microsoft manages the infrastructure, operating system, and runtime environment. 

As a developer, which of the following responsibilities do you still retain?

A. Managing the application’s source code and business logic
B. Applying security patches to the operating system of the virtual machine
C. Designing the database schema and writing SQL queries
D. Monitoring and replacing faulty physical hardware

Correct Answers: A, C

Explanation:

Using Azure’s Platform as a Service (PaaS) shifts many traditional infrastructure responsibilities to Microsoft, allowing developers to focus more on building and deploying applications. Microsoft handles the management of hardware, operating systems, runtime, middleware, and network infrastructure.

However, the core application development tasks remain the responsibility of your team. This includes writing and managing application source code and business logic (A), which defines how your inventory system functions, processes data, and interacts with users.

Similarly, designing the database schema and writing SQL queries (C) are developer responsibilities. Even though Azure manages the underlying database service (e.g., Azure SQL Database), developers must model the data structures, relationships, and write queries to retrieve and manipulate data based on business requirements.

Responsibilities like applying OS security patches (B) and monitoring or replacing physical hardware (D) are handled by Microsoft in the PaaS model. Microsoft ensures that operating systems are up to date, patched against vulnerabilities, and that physical hardware failures are automatically managed through their data center operations.

This shared responsibility model allows your IT teams to offload infrastructure management and concentrate on innovation and application delivery. It also means developers must remain vigilant about application-level security, proper data validation, and best practices in coding and database design.

In summary, with Azure PaaS, you retain responsibility for what matters most—your application’s code and data design—while Microsoft manages the platform beneath it.

Question 6:

Your IT manager is assessing cloud deployment options for a new internal HR application and has selected Azure Platform as a Service (PaaS) to minimize infrastructure management. 

Which of the following tasks and services will Microsoft automatically manage in this scenario? (Select all that apply.)

A. Installing and updating operating systems
B. Managing physical data center hardware
C. Writing application code and business logic
D. Ensuring high availability and load balancing

Correct Answers: A, B, D

Explanation:

In the Platform as a Service (PaaS) cloud model, many foundational responsibilities are delegated to the cloud provider—in this case, Microsoft Azure—allowing organizations to focus on developing and running applications without worrying about underlying infrastructure.

Operating system management (A) is fully handled by Microsoft. This includes installing, patching, and updating the OS for the runtime environment where your application operates. This eliminates the need for your IT staff to manage OS security patches or updates, reducing maintenance effort and improving security compliance.

Physical hardware management (B) is also the responsibility of Microsoft. Azure operates massive data centers with physical servers, storage systems, and networking equipment. Microsoft ensures hardware reliability, performs repairs or replacements, and manages data center operations to maintain service continuity.

Another key responsibility managed by Microsoft is high availability and load balancing (D). Azure automatically provides features such as regional redundancy, failover, and distribution of network traffic to ensure your HR application stays responsive and reliable, even during traffic spikes or hardware failures.

However, writing the application code and business logic (C) remains fully with your development team. Microsoft does not handle software development or define how your application behaves. The design, coding, configuration, and securing of the HR application are customer tasks.

This division allows companies to accelerate development and deployment cycles by eliminating infrastructure complexity, while retaining control over the application and data layers.

In summary, Azure PaaS frees your organization from managing operating systems, physical hardware, and high availability concerns but requires you to manage the application logic and user experience.

Question 7:

Your company is moving its IT systems to Microsoft Azure and Microsoft 365. One of the initial steps is to host the company’s public website in the cloud. As a consultant, you need to select the cloud service model that allows easy website hosting and management without handling the underlying hardware or operating system. 

Which cloud service model in Azure is best suited for this task?

A. Software as a Service (SaaS)
B. Platform as a Service (PaaS)
C. Infrastructure as a Service (IaaS)
D. Container as a Service (CaaS)

Answer: B

Explanation:

When hosting websites in the cloud, the Platform as a Service (PaaS) model is the most suitable choice, especially if you want to avoid managing hardware or operating systems. Microsoft Azure’s PaaS offerings, such as Azure App Service, provide a fully managed platform where developers can deploy their web applications without worrying about the underlying infrastructure.

PaaS abstracts server management, operating system maintenance, patching, scaling, and load balancing, allowing you to focus purely on developing and deploying your application code. This reduces operational overhead and accelerates time to market. For example, Azure App Service supports various development languages and frameworks including .NET, Java, Python, and PHP, enabling flexibility for different web apps.

Other cloud models are less appropriate for this use case:

• Software as a Service (SaaS) delivers fully managed software applications like Microsoft 365 or Salesforce, but it does not offer a platform to host custom websites.

• Infrastructure as a Service (IaaS) provides raw virtual machines and networking, requiring you to manage the OS and runtime environment. While offering greater control, this adds complexity that is unnecessary for simple website hosting.

• Container as a Service (CaaS) manages containerized applications, suitable for microservices but often more complex than needed for straightforward web hosting.

In conclusion, PaaS offers the best balance of simplicity, scalability, and management ease for hosting websites on Azure, making it the ideal cloud service model for your scenario.

Question 8:

Your organization is migrating IT services to Microsoft Azure and Microsoft 365, and one key task is to deploy a Linux-based virtual machine for internal applications. As the IT administrator, you need to pick the cloud service model that offers the control and flexibility required to deploy and manage a Linux VM in Azure. 

Which cloud service model should you choose?

A. Software as a Service (SaaS)
B. Platform as a Service (PaaS)
C. Infrastructure as a Service (IaaS)
D. Container as a Service (CaaS)

Answer: C

Explanation:

For deploying and managing a Linux virtual machine on Azure, the most appropriate choice is Infrastructure as a Service (IaaS). IaaS provides the raw computing resources such as virtual machines, storage, and networking, while giving you full control over the operating system and software stack installed on those VMs.

Using Azure Virtual Machines under the IaaS model, you can select your preferred Linux distribution (Ubuntu, CentOS, Red Hat, etc.), configure the system settings, install necessary applications, manage security patches, and set up networking components like firewalls. This flexibility allows you to customize the environment exactly as required for your internal applications, without the need to maintain physical servers.

By contrast, other service models are less suitable:

• Software as a Service (SaaS) provides ready-to-use applications but does not enable VM deployment or management. It is ideal for end-user applications but not infrastructure control.

• Platform as a Service (PaaS) abstracts the underlying OS and infrastructure, focusing on app deployment. While convenient for web apps or databases, PaaS doesn’t provide control over the VM itself or the operating system, which is needed in this case.

• Container as a Service (CaaS) is designed for managing containerized applications, helpful for microservices architectures but not for managing full Linux virtual machines.

In summary, IaaS is the best choice when you need full administrative control over a Linux VM in Azure. It delivers maximum flexibility for installation, configuration, and management, making it ideal for running internal applications on a virtualized Linux environment.

Question 9:

Your organization is considering adopting Microsoft 365 services to improve collaboration and productivity. During the planning phase, you must explain the key benefits of Microsoft 365 to stakeholders unfamiliar with the platform. 

Which of the following statements best describes the core advantage of Microsoft 365 for businesses?

A. It provides on-premises server solutions for email and file storage.
B. It delivers cloud-based productivity tools and services with flexible access anywhere.
C. It is a hardware appliance that accelerates network performance.
D. It only offers email services without integration of other tools.

Answer: B

Explanation:

Microsoft 365 is a cloud-based subscription service designed to bring together the best productivity tools from Microsoft, including Word, Excel, PowerPoint, Outlook, Teams, SharePoint, and more. The fundamental advantage of Microsoft 365 is its ability to deliver these tools and services via the cloud, providing users with flexible, anywhere-anytime access. This flexibility enhances productivity and collaboration across organizations of all sizes.

Option B captures this core benefit by emphasizing cloud delivery and broad accessibility. Unlike traditional on-premises solutions, Microsoft 365 allows users to work from any device connected to the internet. This is especially vital in today’s business environment where remote and hybrid work models are common.

Option A is incorrect because Microsoft 365 replaces the need for on-premises servers for email and file storage, offering cloud-hosted services that reduce hardware dependency and administrative overhead. Instead of managing physical infrastructure, IT teams can focus on higher-level tasks.

Option C is inaccurate because Microsoft 365 is a suite of cloud services, not a hardware device or network appliance. It’s software delivered via the internet rather than physical hardware.

Option D is also wrong as Microsoft 365 provides a comprehensive set of integrated tools beyond email—such as team collaboration via Microsoft Teams, cloud storage via OneDrive and SharePoint, and advanced security features. It is not limited to just email.

In summary, the core advantage of Microsoft 365 lies in its cloud-based nature, providing seamless, integrated productivity and collaboration tools accessible from anywhere. This makes B the best answer, reflecting the shift toward cloud computing and modern workplace solutions. For businesses, this means improved agility, lower costs, and simplified IT management.

Question 10:

You are preparing for the Microsoft MS-900 exam and need to understand the differences between cloud deployment models. 

Which of the following correctly describes a public cloud environment?

A. Cloud resources are exclusively dedicated to a single organization and managed internally.
B. Cloud services are shared among multiple organizations and hosted by third-party providers.
C. Cloud infrastructure is on-premises behind a company’s firewall.
D. Cloud services are only used for development and testing, not production.

Answer: B

Explanation:

Understanding cloud deployment models is essential for the Microsoft MS-900 exam, as it forms the foundation for cloud services like Microsoft Azure and Microsoft 365. The public cloud is a model where cloud resources—such as servers, storage, and applications—are owned and operated by third-party cloud service providers and shared across multiple customers or tenants.

Option B correctly describes this model. Public clouds, such as Microsoft Azure, Amazon Web Services (AWS), and Google Cloud Platform, offer services over the internet. They are designed to be highly scalable and cost-effective, allowing businesses to access computing resources on demand without the need to invest in physical hardware. The multi-tenant architecture means that while the infrastructure is shared, each customer’s data and applications remain logically separated and secure.

Option A describes a private cloud, where the cloud infrastructure is dedicated solely to a single organization. Private clouds can be hosted on-premises or by third-party providers, but the key difference is exclusivity and control. This option is often preferred by organizations with strict security or compliance requirements.

Option C refers to traditional on-premises infrastructure, where all computing resources are physically located within the company’s own data center behind its firewall. This model lacks the flexibility, scalability, and global reach of cloud services.

Option D is inaccurate because public cloud services are widely used for production workloads across industries, including mission-critical applications, not just development or testing.

In conclusion, recognizing that the public cloud model involves shared, third-party-hosted infrastructure accessible over the internet is critical. It enables businesses to quickly provision resources, scale operations, and reduce capital expenditures. This makes option B the correct choice for describing the public cloud environment in the context of Microsoft cloud services and the MS-900 exam.