Microsoft AZ-900 Online Practice Questions and Exam Preparation

Microsoft AZ-900 Online Questions & Answers

• Question 261:

  HOTSPOT

  To complete the sentence, select the appropriate option in the answer area.

  

  

  Explanation:

  One of the benefits of zure sql data warehouse is that high availability is built into the platform

• Question 262:

  Your company has an Azure subscription that contains the following unused resources:

  1. 20 user accounts in Azure Active Directory (Azure AD)

  2. Five groups in Azure AD

  3. 10 public IP addresses

  4. 10 network interfaces

  You need to reduce the Azure costs for the company.

  Which unused resources should you remove?

  A. the user accounts
  B. the network interfaces
  C. the public IP addresses
  D. the groups
  C. the public IP addresses

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  Unused public IP addresses incur a monthly cost in Azure.-Removing them immediately reduces subscription charges. Incorrect Options: The user accounts: Azure AD user accounts do not generate subscription costs.-The network interfaces: Unused network interfaces do not incur charges by themselves unless attached to VMs or public IPs.-The groups: Azure AD groups do not incur any costs. References (Microsoft Learn): Azure pricing for public IP addresses https://learn.microsoft.com/en-us/azure/virtual-network/public-ip-addresses#pricing Azure Advisor cost recommendations https://learn.microsoft.com/en-us/azure/advisor/advisor-cost-recommendations

  https://docs.microsoft.com/en-us/azure/advisor/advisor-cost-recommendations#reduce-costs-by-deleting-or-reconfiguring-idle-virtual-network-gateways

• Question 263:

  DRAG DROP

  You need to identify a customer's level of shared responsibility based on the cloud service model.

  In which order should you list each model from most customer responsibility to least customer responsibility? To answer, move all models from the list of models to the answer area and arrange them in the correct order.

  Select and Place:

  

  

  Explanation:

  Step 1: Infrastructure as a service (IaaS)

  Infrastructure as a service (IaaS) is a type of cloud computing service that offers essential compute, storage, and networking resources on demand, on a pay-as-you-go basis.

  Step 2: Platform as a service (PaaS)

  Platform as a service (PaaS) is a complete development and deployment environment in the cloud, with resources that enable you to deliver everything from simple cloud-based apps to sophisticated, cloud-enabled enterprise applications. You purchase the resources you need from a cloud service provider on a pay-as-you-go basis and access them over a secure Internet connection.

  Like IaaS, PaaS includes infrastructure Servers, storage, and networking also middleware, development tools, business intelligence (BI) services, database management systems, and more. PaaS is designed to support the complete web application lifecycle: building, testing, deploying, managing, and updating.

  Step 3: Software as a service (SaaS)

  Software as a service (SaaS) allows users to connect to and use cloud-based apps over the Internet. Common examples are email, calendaring, and office tools (such as Microsoft Office 365).

  SaaS provides a complete software solution that you purchase on a pay-as-you-go basis from a cloud service provider. You rent the use of an app for your organization, and your users connect to it over the Internet, usually with a web browser. All of the underlying infrastructure, middleware, app software, and app data are located in the service provider's data center. The service provider manages the hardware and software, and with the appropriate service agreement, will ensure the availability and the

  security of the app and your data as well. SaaS allows your organization to get quickly up and running with an app at minimal upfront cost.

  Reference:

  https://azure.microsoft.com/en-us/resources/cloud-computing-dictionary/what-is-iaas

  https://azure.microsoft.com/en-us/resources/cloud-computing-dictionary/what-is-paas/

  https://azure.microsoft.com/en-us/resources/cloud-computing-dictionary/what-is-saas/

• Question 264:

  Your company wants to modernize its application using containers. You need a fully managed orchestration platform that supports automatic scaling, self-healing, and rolling upgrades. What should you deploy?

  A. Azure Container Instances
  B. Azure Virtual Machines
  C. Azure Kubernetes Service
  D. Azure Functions
  C. Azure Kubernetes Service

  ---

  AKS is a fully managed Kubernetes service that provides scaling, orchestration, self-healing, and updates. ACI runs containers but without orchestration.

• Question 265:

  HOTSPOT

  You create a resource group named RG1 in Azure Resource Manager.

  You need to prevent the deletion of the resources in RG1.

  Which setting should you use? To answer, select the appropriate setting in the answer area.

  

  

  

  Explanation:

  You can configure a lock on a resource group to prevent the accidental deletion.

  As an administrator, you may need to lock a subscription, resource group, or resource to prevent other users in your organization from accidentally deleting or modifying critical resources. You can set the lock level to CanNotDelete or ReadOnly. In the portal, the locks are called Delete and Read-only respectively.

  1. CanNotDelete means authorized users can still read and modify a resource, but they can't delete the resource.

  2. ReadOnly means authorized users can read a resource, but they can't delete or update the resource. Applying this lock is similar to restricting all authorized users to the permissions granted by the Reader role.

  Reference:

  https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-lock-resources

• Question 266:

  You have 1,000 virtual machines hosted on the Hyper-V hosts in a data center.

  You plan to migrate all the virtual machines to an Azure pay-as-you-go subscription.

  You need to identify which expenditure model to use for the planned Azure solution.

  Which expenditure model should you identify?

  A. operational
  B. elastic
  C. capital
  D. scalable
  A. operational

  ---

  One of the major changes that you will face when you move from on-premises cloud to the public cloud is the switch from capital expenditure (buying hardware) to operating expenditure (paying for service as you use it). This switch also requires more careful management of your costs. The benefit of the cloud is that you can fundamentally and positively affect the cost of a service you use by merely shutting down or resizing it when it's not needed.

  References: https://docs.microsoft.com/en-us/azure/architecture/cloud-adoption/appendix/azure-scaffold

• Question 267:

  HOTSPOT

  For each of the following statements, select Yes if the statement is true. Otherwise, select No.

  NOTE: Each correct selection is worth one point.

  

  

  Explanation:

  Box 1: Yes

  Pay-as-you-go is a consumption-based model.

  The Pay as You Go model is billed on a per second basis and you can start or stop the service at any time - paying only for what you use.

  Box 2: No

  No, it is OpEx (Operational Expenditures).

  OpEx: The business can achieve ROI immediately in many cases because the infrastructure is managed by the cloud provider.

  CapEx: ROI is not usually realized until a long time after the purchase was made because the infrastructure needs to be set up and employees need to be trained. Computers, servers, and other hardware needed for on-premises data centers are all examples of CapEx.

  Box 3: Yes

  Operational Expenditures (OpEx) are the ongoing costs related to day-to-day operations. A subscription fee for cloud services is considered OpEx—the cloud provider is making the infrastructure investment upfront, and you only pay for the resources you need as you need them.

  Reference:

  https://azure.microsoft.com/en-us/pricing/purchase-options/pay-as-you-go/

  https://blogs.vmware.com/cloudhealth/capex-vs-opex-cloud-cost-management/

• Question 268:

  This question requires that you evaluate the underlined text to determine if it is correct.

  You have an application that is comprised of an Azure web app that has a Service Level Agreement (SLA) of 99.95 percent and an Azure SQL database that has an SLA of 99.99 percent.

  The composite SLA for the application is the product of both SLAs, which equals 99.94 percent.

  Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed". If the statement is incorrect, select the answer choice that makes the statement correct.

  A. No change is needed
  B. the lowest SLA associated to the application, which is 99.95 percent
  C. the highest SLA associated to the application, which is 99.99 percent
  D. the difference between the two SLAs, which is 0.05 percent
  A. No change is needed

  ---

  Composite SLAs involve multiple services supporting an application, each with differing levels of availability. For example, consider an App Service web app that writes to Azure SQL Database. At the time of this writing, these Azure services have the following SLAs:

  1. App Service web apps = 99.95%

  2. SQL Database = 99.99%

  What is the maximum downtime you would expect for this application? If either service fails, the whole application fails. The probability of each service failing is independent, so the composite SLA for this application is 99.95% ?99.99% = 99.94%. That's lower than the individual SLAs, which isn't surprising because an application that relies on multiple services has more potential failure points.

  References: https://docs.microsoft.com/en-us/azure/architecture/reliability/requirements#understand-service-level- agreements

• Question 269:

  HOTSPOT

  _________________ is a desktop and application virtualization service that enables the use of a cloud-hosted version of windows from any location.

  Select the answer that correctly completes the sentence.

  

  

  Explanation:

  Box: Azure Virtual Desktop Azure Virtual Desktop is a desktop and app virtualization service that runs on the cloud. Here's what you can do when you run Azure Virtual Desktop on Azure: *-Set up a multi-session Windows 11 or Windows 10 deployment that delivers a full Windows experience with scalability Present Microsoft 365 Apps for enterprise and optimize it to run in multi-user virtual scenarios

  Bring your existing Remote Desktop Services (RDS) and Windows Server desktops and apps to any computer Virtualize both desktops and apps Manage desktops and apps from different Windows and Windows Server operating systems with a unified management experience

  Incorrect:

  * Azure Spot Virtual Machines

  Using Azure Spot Virtual Machines allows you to take advantage of our unused capacity at a significant cost savings. At any point in time when Azure needs the capacity back, the Azure infrastructure will evict Azure Spot Virtual Machines.

  Reference:

  https://learn.microsoft.com/en-us/azure/virtual-desktop/overview

• Question 270:

  HOTSPOT

  You plan to extend your company's network to Azure.

  The network contains a VPN appliance that uses an IP address of 131.107.700.1.

  You need to create an Azure resource that defines the VPN appliance In Azure.

  Which Azure resource should you create? To answer, select the appropriate resource in the answer area.

  

  

  Explanation:

  A Local Network Gateway is an object in Azure that represents your on-premise VPN device. A Virtual Network Gateway is the VPN object at the Azure end of the VPN. A ‘connection’ is what connects the Local Network Gateway an the Virtual Network Gateway to bring up the VPN.

  The local network gateway typically refers to your on-premises location. You give the site a name by which Azure can refer to it, then specify the IP address of the on-premises VPN device to which you will create a connection. You also specify the IP address prefixes that will be routed through the VPN gateway to the VPN device. The address prefixes you specify are the prefixes located on your on-premises network. If your on-premises network changes or you need to change the public IP address for the VPN device, you can easily update the values later.

  References:

  https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-howto-site-to-site-resource-manager-portal

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