Microsoft MS-900 Practice Test Questions, Exam Dumps

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MS-900 Microsoft Practice Test Questions and Exam Dumps

Question No 1:

Your organization is transitioning its IT infrastructure to Microsoft Azure. During the planning phase, there is a discussion about application behavior post-migration. A team member states:

All applications will remain in a hybrid environment after migrating to Microsoft Azure.You are required to evaluate this statement. If the statement is accurate, select "No adjustment required." If it is inaccurate, choose the more accurate replacement from the options.

Which of the following best corrects or confirms the underlined segment?

A. No adjustment required
B. Applications that manage sensitive information
C. Applications where access requires a USB-token device
D. All legacy applications

Answer: B. Applications that manage sensitive information

Explanation:

In the context of cloud migrations—particularly to Microsoft Azure—organizations often adopt a hybrid cloud model. This means some applications or services remain on-premises, while others are moved to the cloud. However, not all applications remain in a hybrid environment by default. The underlined segment in the original question suggests that all applications will remain hybrid after moving to Azure, which is inaccurate.

The reality is that only certain types of applications typically remain in a hybrid setup. For example, applications that manage sensitive information—such as those handling health records, financial data, or government documents—may continue to operate in on-premises environments due to compliance, security, or data sovereignty concerns. These applications might not be suitable for full cloud migration without proper safeguards.

On the other hand, applications that don't handle sensitive information or aren't bound by strict compliance regulations are often fully migrated to the cloud for scalability, reduced maintenance, and cost efficiency.

Option B, therefore, provides a more accurate replacement to the underlined text:

Applications that manage sensitive information will remain in a hybrid environment after migrating to Microsoft Azure.

This correction better reflects best practices in cloud adoption strategies.

Options C and D, while plausible in certain niche cases, are too narrow or too broad. Not all legacy applications (Option D) stay hybrid—some are modernized and moved entirely to Azure. Similarly, applications requiring USB-token access (Option C) may require specialized handling, but that’s not a blanket condition to remain in a hybrid model.

Question No 2:

Your company intends to move its current server infrastructure to the cloud. You are part of a planning team tasked with choosing the appropriate cloud service model.

The main goals are:

Upgrading the company’s existing email infrastructure.
Reducing server and application maintenance overhead.

You suggest using the Platform as a Service (PaaS) cloud model to fulfill these objectives.

Does the solution meet the stated requirements?

A. Yes
B. No

Answer: A. Yes

Explanation:

To evaluate whether the PaaS model meets the goal, we must consider what Platform as a Service offers and how it aligns with the organization’s objectives.

Platform as a Service (PaaS) provides a managed environment where developers can build, deploy, and manage applications without having to deal with the underlying infrastructure such as servers, networking, or storage. Common examples include Azure App Services and Microsoft Exchange Online (as part of Office 365) when used for application hosting and email services.

In this case, the company's two main objectives are:

Upgrade the email environment – PaaS solutions like Microsoft Exchange Online or Outlook 365 allow businesses to modernize their email systems without hosting and managing on-premises mail servers. These services are cloud-hosted and fully managed by Microsoft.
Reduce server and application maintenance – One of the core advantages of PaaS is the elimination of infrastructure maintenance. The cloud provider (e.g., Microsoft) takes responsibility for OS patching, backups, and scaling.

Therefore, recommending a PaaS model satisfies both requirements. It provides an up-to-date email platform and offloads most of the maintenance tasks, allowing IT teams to focus on higher-value activities instead of managing hardware or server software.

Contrast this with Infrastructure as a Service (IaaS), where the organization still has to manage OS, middleware, and runtime. Or Software as a Service (SaaS), which is even more abstracted but may offer less flexibility in customization than PaaS in certain contexts.

Because the PaaS model strikes the right balance between control and reduced maintenance, and provides modern capabilities to upgrade email systems, the solution does meet the goal.

Question No 3:

The question is included in a number of questions that depict an identical setup. However, each question leads to a distinctive result. Establish if the proposed solution satisfies the given requirements.

Your company is planning to migrate its server infrastructure to the cloud as part of a modernization effort. A key focus area is upgrading the existing email environment, which currently runs on on-premises servers. The organization’s leadership has outlined the following goals:

Upgrade the email system to a modern, cloud-based solution
Minimize or eliminate server and application-level maintenance by internal IT teams

As part of your role, you must recommend a suitable cloud service model that meets both goals.

Does the solution meet the goal?

A. Yes
B. No

Correct Answer: B. No

Explanation:

The proposed solution of using Infrastructure as a Service (IaaS) does not meet the full requirements outlined in the scenario.

IaaS provides cloud-based access to infrastructure components such as virtual machines (VMs), storage, and networking. While this model eliminates the need to purchase and maintain physical hardware, the responsibility for managing the operating systems, application software (e.g., email servers like Microsoft Exchange), patches, updates, and backups remains with the customer.

In this case, moving your email environment to IaaS would likely involve setting up virtual machines to host your current or upgraded email server. This still requires your IT team to:

Configure and install the email software
Monitor performance and availability
Manage security updates and patches
Handle ongoing maintenance and troubleshooting

This clearly contradicts the goal of reducing server and application maintenance.

To meet the stated requirements effectively, a Software as a Service (SaaS) model is more appropriate. In SaaS, the cloud provider manages everything—including the application itself. For email, solutions like Microsoft 365 (Exchange Online) or Google Workspace (Gmail) provide modern, scalable platforms where your organization does not have to worry about server configuration, application patches, or infrastructure management. Everything is handled by the vendor, and end-users access the email service via web or app interfaces.

By using SaaS, your organization can:

Quickly upgrade to a modern cloud-based email system
Eliminate the need for server maintenance and software management
Improve availability, scalability, and compliance

In conclusion, while IaaS does provide some cloud benefits, it does not fulfill the full requirement—particularly the need to reduce server and application maintenance. Therefore, the answer is B. No.

Question No 4:

This question is part of a series based on an identical setup. Each question presents a different proposed solution. Evaluate whether the suggested solution satisfies the specific business and technical requirements.

Your organization is currently planning a strategic shift to the cloud in order to modernize its IT infrastructure. One of the core objectives of this migration is to upgrade the company’s existing email system, which is currently hosted on-premises. The executive leadership has provided the following specific requirements:

The new solution should modernize and upgrade the current email platform.
It must also reduce or eliminate ongoing server and application maintenance handled by internal IT teams.

As part of the cloud migration planning, you have been asked to recommend a cloud computing model that best aligns with these goals.

Does the proposed solution meet the specified goals?

A. Yes
B. No

Correct Answer: A. Yes

Explanation:

The correct answer is A. Yes, because the Software as a Service (SaaS) model is specifically designed to meet the needs of organizations that want to offload infrastructure and application management to a third-party provider.

In a SaaS model, the cloud provider hosts and maintains both the hardware infrastructure and the application software. For email systems, this means using platforms like:

Microsoft 365 (Exchange Online)
Google Workspace (Gmail)
Zoho Mail

With these services, everything from server management, storage, backups, and security patches to application upgrades and monitoring is handled by the provider. Your IT team no longer needs to install, maintain, or troubleshoot email servers, nor do they have to worry about software updates or downtime mitigation.

This model perfectly aligns with both business requirements:

Modernizing the Email System:
SaaS email platforms offer modern web-based interfaces, mobile access, collaboration tools (like Teams or Google Chat), and advanced security and compliance features. These represent a significant upgrade over most on-premises email servers.
Reducing Maintenance Burden:
Since the SaaS provider manages everything from infrastructure to application functionality, the internal IT team is relieved of server patching, application configuration, security updates, and performance monitoring—drastically reducing operational overhead.

Furthermore, SaaS solutions are designed to scale easily with business needs and offer high availability with built-in redundancy and disaster recovery.

In contrast to IaaS (where you still manage the email server yourself) or PaaS (which only abstracts the underlying platform), SaaS is the only model that delivers a fully managed email experience with zero server or application maintenance.

Recommending the SaaS model fully satisfies the goal of upgrading the email system while reducing maintenance requirements. Therefore, the correct answer is A. Yes.

Question No 5:

Your company is building a web-based inventory system using Microsoft Azure’s Platform as a Service (PaaS) offerings. The infrastructure, operating system, and runtime are managed by Microsoft.

As a developer in your company, which of the following are you still responsible for?

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

Correct Answer: A and C

Explanation:

When using Platform as a Service (PaaS) in Microsoft Azure, your organization hands over many of the infrastructure and platform responsibilities to Microsoft. This includes managing the operating system, middleware, runtime, virtual machines, storage infrastructure, and network management.

However, you are still responsible for the application layer, which includes your application’s code, configuration, and the data it uses. Microsoft provides you with a platform on which to build, but it doesn’t control your business logic, your database schema, or your application’s security controls.

For example, if you’re using Azure App Service to host a web application and Azure SQL Database to store data, Microsoft will manage the hosting environment, patch the OS, provide scalability, and handle physical infrastructure. But your developers still need to write and deploy the application, as well as design and query the database as per the business requirements.

You are not responsible for applying operating system updates or fixing hardware—that’s fully managed by Microsoft. This frees your IT team from low-level tasks and allows them to focus on innovation and application delivery.

This shared responsibility model ensures that organizations can rapidly build and deploy applications without needing deep infrastructure expertise. Still, developers must actively manage application security (e.g., securing APIs, implementing authentication), validate data, and follow best practices for coding and database design.

Question No 6:

Your IT manager is evaluating cloud deployment options for a new internal HR application. She chooses Azure PaaS to reduce infrastructure overhead.

Which of the following services and responsibilities will Microsoft automatically handle under this model? (Choose all that apply)

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

Correct Answer: A, B, and D

Explanation:

In a Platform as a Service (PaaS) model, Microsoft Azure takes over many of the underlying responsibilities associated with running an application. This includes infrastructure management, operating system updates, load balancing, and ensuring high availability across regions.

When your company opts for a PaaS model—such as Azure App Service, Azure Functions, or Azure SQL Database—it gains access to a fully managed environment. Microsoft ensures that the servers, network devices, storage systems, and virtual machines powering your app are up to date, reliable, and secure.

Microsoft also handles OS-level patching, so your IT team doesn’t need to spend time updating Windows or Linux environments. This reduces risk and saves administrative effort. Additionally, Azure provides automatic load balancing and scalability features out of the box. This means if your application usage spikes, Azure automatically distributes the load without manual intervention.

However, Microsoft does not write your application’s business logic. Designing the application, writing the code, setting up APIs, and controlling how users interact with the system is entirely the customer’s responsibility.

This division of responsibility allows companies to deploy faster and innovate more, while still retaining control over what matters—the application itself and its data. For internal applications like HR systems, using PaaS ensures compliance, uptime, and performance without the burden of infrastructure maintenance.

PaaS is ideal for developers who want to focus on functionality and user experience, without worrying about OS, servers, or hardware.

Question No 7:

Your company is migrating its IT infrastructure to Microsoft Azure and Microsoft 365. One of the initial tasks involves hosting the company’s public-facing website in the cloud. As an IT consultant, you must choose the appropriate cloud service model that allows you to easily host and manage the website without having to deal with managing underlying hardware or the operating system.

Which of the following cloud service models is best suited for hosting websites on Microsoft Azure?

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

Correct Answer: B. Platform as a Service (PaaS)

Explanation:

When it comes to hosting a website in the cloud, the Platform as a Service (PaaS) model is the most appropriate option, especially if you want to minimize the complexity of managing the underlying infrastructure and operating system.

In Microsoft Azure, PaaS offerings, like Azure App Service, allow developers to simply upload their web applications (whether built in .NET, Java, Python, PHP, etc.) and have them automatically deployed and managed on the cloud. PaaS abstracts away the complexity of managing virtual machines, operating systems, network configurations, and security patches, allowing you to focus solely on application development and scaling.

Azure App Service handles the hosting, load balancing, scaling, and patching for you, providing a streamlined approach to deploying websites. This makes it ideal for businesses that want a fully managed platform that handles everything except the website code itself.

Let's consider the other cloud service models:

Software as a Service (SaaS): SaaS delivers fully managed software applications, such as Microsoft 365 or Salesforce, but it does not provide a platform for deploying custom websites. Therefore, SaaS is not suitable for this use case.
Infrastructure as a Service (IaaS): IaaS provides virtual machines (VMs) and networking resources, requiring you to manage the operating system, runtime environment, and application. This provides full control but also comes with increased complexity. If you only need to host a website, managing VMs and infrastructure is more effort than necessary.
Container as a Service (CaaS): CaaS focuses on containerized applications and is best for managing microservices and containerized workloads. While it offers flexibility, it adds unnecessary complexity if your goal is just to host a simple website.

Conclusion: If you are looking to host a website with minimal infrastructure management, the PaaS model in Azure is the most suitable option because it abstracts away the complexity of servers and OS management.

Question No 8:

Your company is migrating its IT services to Microsoft Azure and Microsoft 365. One of the first tasks involves deploying a Linux-based virtual machine (VM) for running internal applications and services. As an IT administrator, you need to identify the most appropriate cloud service model that provides the flexibility and control needed to deploy and manage a Linux VM on the Azure platform.

Which of the following cloud service models would be the best choice to deploy a Linux virtual machine on Microsoft Azure?

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

Correct Answer: C. Infrastructure as a Service (IaaS)

Explanation:

For deploying a Linux Virtual Machine (VM) on Azure, the best option is Infrastructure as a Service (IaaS), as it offers the most flexibility and control over the virtual machine and its environment.

With IaaS, you can create and manage virtual machines on Azure's infrastructure. These VMs can run various operating systems, including multiple distributions of Linux, such as Ubuntu, CentOS, Red Hat, and others. Azure’s Virtual Machines (VMs) service gives you complete control over the VM, allowing you to install, configure, and run any applications you need, as well as manage network settings, storage, and firewalls. This provides the full flexibility of managing your Linux-based systems without needing to maintain physical hardware.

In IaaS, you are responsible for managing the operating system, software installations, and updates. This model is ideal for situations where you need full control over the environment, as you can configure the VM exactly to your needs.

Now, let’s consider the other options:

SaaS (Software as a Service): SaaS is not designed for managing virtual machines. It delivers ready-to-use applications (e.g., Microsoft 365, Google Docs) but does not offer the ability to deploy or manage VMs. Therefore, it is not suitable for this use case.
PaaS (Platform as a Service): PaaS abstracts away the operating system and infrastructure, focusing instead on the application layer. While it simplifies app development and deployment, it does not allow for the creation or management of virtual machines. Therefore, PaaS would not be the right choice if you need full control over the Linux environment.
CaaS (Container as a Service): CaaS provides a platform for managing containerized applications and would be more suitable if you are working with microservices or container-based architectures. It’s not designed for full VM management and wouldn't provide the same flexibility as IaaS.

Conclusion: If your goal is to deploy and manage a Linux virtual machine with complete control over the operating system and environment, the IaaS model is the most appropriate choice. Azure's Virtual Machines service will give you the flexibility and full control that you require.