Describe cloud concepts for Microsoft 365 Fundamentals (MS-900)

Sample Practice Questions

1. Question 1

   DRAG DROP - Your company plans to migrate from on-premises to a hybrid cloud deployment. You are required to make sure that the Microsoft platform used for the migration offers hybrid abilities. Which of the following options meet the requirement? Answer by dragging the correct option/s from the list to the answer area. Select and Place:
   Explanation

   References: https://docs.microsoft.com/en-us/office365/enterprise/architecture-of-microsoft-hybrid-cloud-scenarios

2. Question 2

   Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements. Your company plans to move their Server environment to the cloud. You have been tasked with identifying a cloud model that allows for the current email environment to be upgraded, while also reducing server and application maintenance. You need to make sure that the requirements are met. Solution: You recommend the Software as a service (SaaS) model. Does the solution meet the goal?
   1. A. Yes
   2. B. No
   Explanation

   The correct answer is: A. Yes.

   Yes, recommending Software as a Service satisfies the requirement. Email is a classic SaaS workload: moving from an on-premises Exchange Server to Exchange Online in Microsoft 365 means Microsoft now owns the hardware, the hypervisor, the Windows Server OS, the Exchange application binaries, patching, high availability, anti-malware, and storage redundancy. The customer no longer maintains mailbox servers, applies cumulative updates, plans capacity, or refreshes hardware; administrators are left with user, mailbox, and policy configuration through the Exchange admin center. That directly meets both stated goals of upgrading the email environment to a current cloud-hosted service and reducing server and application maintenance. Choosing No would be incorrect because there is no cloud model better suited to a turnkey, low-maintenance email upgrade than SaaS; IaaS or PaaS would force the customer to keep managing the Exchange application or the underlying VM.

3. Question 3

   Your company makes use of Platform as a Service (PaaS) for their Azure solution. Which of the following options are components that your IT employees are responsible for?
   1. A. Networks.
   2. B. Databases.
   3. C. Applications.
   4. D. Servers.
   Explanation

   The correct answer is: C. Applications..

   In the Platform as a Service shared-responsibility model the cloud provider manages the physical datacenter, host servers, virtualization, networking, storage, the operating system, and the runtime or middleware, while the customer remains responsible for the applications they deploy and the data those applications process. That makes Applications the correct choice: the customer's developers write, configure, and maintain the application code that runs on top of the managed platform. Networks is wrong because PaaS abstracts away the underlying virtual network fabric, leaving Microsoft to manage it. Databases is incorrect when the database is a managed PaaS service like Azure SQL Database, where Microsoft handles patching, backups, and the engine itself (the customer still designs the schema, but the database service is provider-managed). Servers is also wrong because PaaS explicitly removes the customer's responsibility for provisioning, patching, and maintaining server VMs; that is the whole point of moving from IaaS to PaaS.

4. Question 4

   Your company makes use of Platform as a Service (PaaS) for their Azure solution. Which of the following options are components that Microsoft are responsible for? (Choose all that apply).
   1. A. Storage.
   2. B. Databases.
   3. C. Applications.
   4. D. Operating system.
   Explanation

   The correct answers are: A. Storage., B. Databases., D. Operating system..

   In the Platform as a Service shared-responsibility model Microsoft owns and operates the entire underlying stack so that developers can focus solely on their code: that includes Storage (the underlying disks, blob backends, and replication), the Operating system on the host and on the managed compute that runs customer code, and managed Databases such as Azure SQL Database where the database engine, patching, high availability, and backups are all provider-managed. Applications is the one component on the list that is not Microsoft's responsibility in PaaS, because the customer writes, deploys, configures, and maintains the application code and is accountable for its security, business logic, and data inside it. So Microsoft is responsible for storage, databases, and the operating system, while the customer remains responsible for the application layer; selecting Applications as a Microsoft-owned item would invert the PaaS responsibility boundary.

5. Question 5

   Your company is planning to migrate to Microsoft Azure and Microsoft 365. You are required to identify a cloud service that allows for website hosting. Which of the following is the model you should choose?
   1. A. Software as a Service (SaaS)
   2. B. Platform as a Service (PaaS)
   3. C. Infrastructure as a Service (IaaS)
   4. D. Container as a Service (CaaS)
   Explanation

   The correct answer is: B. Platform as a Service (PaaS).

   Platform as a Service is the right model for hosting a website because services like Azure App Service give you a managed runtime, web server, operating system, and underlying VM that are all maintained by Microsoft; you deploy your application code (or a container) and the platform handles patching, scaling, load balancing, and certificates. Software as a Service is wrong because SaaS delivers a finished application owned by the provider (such as Outlook on the web), not a hosting environment for your own site. Infrastructure as a Service would technically work but is the wrong best-fit answer: with IaaS you would have to provision a VM, install and configure IIS or NGINX, patch the OS, and manage scale-out yourself, which is exactly the operational burden PaaS removes. Container as a Service is not one of Microsoft's official cloud-service-model tiers for MS-900; container hosting in Azure is typically delivered through PaaS-style services like App Service for Containers or AKS. PaaS is the correct fit.

Other Microsoft 365 Fundamentals (MS-900) domains

• Describe Microsoft 365 apps and services (291 questions)
• Describe Microsoft 365 pricing, licensing, and support (69 questions)
• Describe security, compliance, privacy, and trust in Microsoft 365 (123 questions)