AZ-900 Azure Fundamentals
You have an on-premises network that contains several servers. You plan to migrate all the servers to Azure. You need to recommend a solution to ensure that some of the servers are available if a single Azure data center goes offline for an extended period. What should you include in the recommendation?
Fault Tolerance - ability of a system to continue to function in the event of a failure of some of its components
Fault tolerance
A cloud service that remains available after a failure occurs
What are two characteristics of the public cloud?
-Metered pricing -Self-service management
Low latency
A cloud service that can be accessed quickly from the internet
Diaster recovery
A cloud service that can be recovered after a failure occurs
Dynamic scalability
A cloud service that performs quickly when demand increases
You have an on-premises network that contains 100 servers. You need to recommend a solution that provides additional resources to your users. The solution must minimize capital and operational expenditure costs. What should you include in the recommendation? A. a complete migration to the public cloud B. an additional data center C. a private cloud D. a hybrid cloud
A hybrid cloud. With a hybrid cloud, you can continue to use the on-premises servers while adding new servers in the public cloud (Azure for example). Adding new servers in Azure minimizes the capital expenditure costs as you are not paying for new servers as you would if you deployed new server on-premises.
True (PaaS) 2
A platform as a service (PaaS) solution that hosts web apps in Azure provides professional development services to continuously add features to custom applications.
True (PaaS)
A platform as a service (PaaS) solution that hosts web apps in Azure provides the ability to scale the platform automatically.
You have an Azure environment that contains multiple Azure virtual machines. You plan to implement a solution that enables the client computers on your on-premises network to communicate to the Azure virtual machines. You need to recommend which Azure resources must be created for the planned solution. Which two Azure resources should you include in the recommendation? A. a virtual network gateway B. a load balancer C. an application gateway D. a virtual network E. a gateway subnet
A. A virtual network gateway E. A gateway subnet
You plan to store 20 TB of data in Azure. The data will be accessed infrequently and visualized by using Microsoft Power BI. You need to recommend a storage solution for the data. Which two solutions should you recommend? Each correct answer presents a complete solution. A. Azure Data Lake B. Azure Cosmos DB C. Azure SQL Data Warehouse D. Azure SQL Database E. Azure Database for PostgreSQL
A. Azure Data Lake C. Azure SQL Data Warehouse
You have 50 virtual machines hosted on-premises and 50 virtual machines hosted in Azure. The on- premises virtual machines and the Azure virtual machines connect to each other. Which type of cloud model is this? A. hybrid B. private C. public
A. Hybrid
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).
Your company has an on-premises network that contains multiple servers. The company plans to reduce the following administrative responsibilities of network administrators: -Backing up application data -Replacing failed server hardware -Managing physical server security -Updating server operating systems -Managing permissions to shared documents The company plans to migrate several servers to Azure virtual machines. You need to identify which administrative responsibilities will be eliminated after the planned migration. Which two responsibilities should you identify? Each correct answer presents a complete solution. A. Replacing failed server hardware B. Backing up application data C. Managing physical server security D. Updating server operating systems E. Managing permissions to shared documents
A. Replacing failed server hardware C. Managing physical server security As an Azure customer, you have no access to the physical servers.
Your company plans to migrate to Azure. The company has several departments. All the Azure resources used by each department will be managed by a department administrator. What are two possible techniques to segment Azure for the departments? A. multiple subscriptions B. multiple Azure Active Directory (Azure AD) directories C. multiple regions D. multiple resource groups
A. multiple subscriptions D. multiple resource groups
To which cloud models can you deploy physical servers? A. private cloud and hybrid cloud only B. private cloud only C. private cloud, hybrid cloud and public cloud D. hybrid cloud only
A. private cloud and hybrid cloud only Explanation: A private cloud is on-premises so you can deploy physical servers. A hybrid cloud is a mix of on-premise and public cloud resources. You can deploy physical servers on- premises.
True (CapEx vs. OpEx)
Azure provides flexibility between capital expenditure (CapEx) and operational expenditure (OpEx)
You plan to provision Infrastructure as a Service (IaaS) resources in Azure. Which resource is an example of IaaS? A. an Azure web app B. an Azure virtual machine C. an Azure logic app D. an Azure SQL database
B. An Azure virtual machine
Your company plans to move several servers to Azure. The company's compliance policy states that a server named FinServer must be on a separate network segment. You are evaluating which Azure services can be used to meet the compliance policy requirements. Which Azure solution should you recommend? A. a resource group for FinServer and another resource group for all the other servers B. a virtual network for FinServer and another virtual network for all the other servers C. a VPN for FinServer and a virtual network gateway for each other server D. one resource group for all the servers and a resource lock for FinServer
B. a virtual network for FinServer and another virtual network for all the other servers
Your company plans to deploy several custom applications to Azure. The applications will provide invoicing services to the customers of the company. Each application will have several prerequisite applications and services installed. You need to recommend a cloud deployment solution for all the applications. What should you recommend? A. Software as a Service (SaaS) B. Platform as a Service (PaaS) C. Infrastructure as a Service (laaS)
C. Infrastructure as a Service Explanation: Infrastructure as a service (IaaS) is an instant computing infrastructure, provisioned and managed over the internet. The IaaS service provider manages the infrastructure, while you purchase, install, configure, and manage your own software
In which type of cloud model are all the hardware resources owned by a third-party and shared between multiple tenants? A. private B. hybrid C. public
C. Public The tenants are the customers who use the public cloud services.
You plan to create an Azure virtual machine. You need to identify which storage service must be used to store the unmanaged data disks of the virtual machine. What should you identify?
Containers
You need to identify the type of failure for which an Azure Availability Zone can be used to protect access to Azure services. What should you identify? A. a physical server failure B. an Azure region failure C. a storage failure D. an Azure data center failure
D. An Azure data center failure
You attempt to create several managed Microsoft SQL Server instances in an Azure environment and receive a message that you must increase your Azure subscription limits. What should you do to increase the limits? A. Create a service health alert B. Upgrade your support plan C. Modify an Azure policy D. Create a new support request
D. Create a new support request
You plan to migrate several servers from an on-premises network to Azure. What is an advantage of using a public cloud service for the servers over an on-premises network? A. The public cloud is owned by the public, NOT a private corporation B. The public cloud is a crowd-sourcing solution that provides corporations with the ability to enhance the cloud C. All public cloud resources can be freely accessed by every member of the public D. The public cloud is a shared entity whereby multiple corporations each use a portion of the resources in the cloud
D. The public cloud is a shared entity whereby multiple corporations each use a portion of the resources in the cloud
Your company hosts an accounting application named App1 that is used by all the customers of the company. App1 has low usage during the first three weeks of each month and very high usage during the last week of each month. Which benefit of Azure Cloud Services supports cost management for this type of usage pattern?
Elasticity, in this case, is the ability to provide additional compute resource when needed and reduce the compute resource when not need to reduce costs.
Deploying your own datacenter is an example of CapEx.
Explanation: 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). Deploying your own datacenter is an example of CapEx. This is because you need to purchase all the infrastructure upfront before you can use it.
You plan to extend your company's network to Azure. The network contains a VPN appliance that uses an IP address of 131.107.200.1. You need to create an Azure resource that defines the VPN appliance in Azure. Which Azure resource should you create?
Local network gateways. A Local Network Gateway is an object in Azure that represents your on-premise VPN device.
Public Cloud
No required capital expenditure
Your company plans to migrate all its data and resources to Azure. The company's migration plan states that only Platform as a Service (PaaS) solutions must be used in Azure. You need to deploy an Azure environment that meets the company migration plan. Solution: You create an Azure App Service and Azure Storage accounts. Does this meet the goal?
No, Azure App Service is a PaaS (Platform as a Service) service. However, Azure Storage accounts are an IaaS (Infrastructure as a Service) service.
Your company plans to migrate all its data and resources to Azure. The company's migration plan states that only Platform as a Service (PaaS) solutions must be used in Azure. You need to deploy an Azure environment that meets the company migration plan. Solution: You create an Azure App Service and Azure virtual machines that have Microsoft SQL Server installed. Does this meet the goal?
No, Azure App Service is a PaaS service. However, Azure virtual machines are an IaaS service.
You plan to deploy several Azure virtual machines. You need to ensure that the services running on the virtual machines are available if a single data center fails. Solution: You deploy the virtual machines to two or more resource groups. Does this meet the goal?
No. A resource group is a logical container for Azure resources. When you create a resource group, you specify which location to create the resource group in. However, when you create a virtual machine and place it in the resource group, the virtual machine can still be in a different location (different datacenter).
Your company plans to migrate all its data and resources to Azure. The company's migration plan states that only Platform as a Service (PaaS) solutions must be used in Azure. You need to deploy an Azure environment that meets the company migration plan. Solution: You create an Azure virtual machines, Azure SQL databases, and Azure Storage accounts. Does this meet the goal? A. Yes B. No
No. Explanation: Platform as a service (PaaS) is a complete development and deployment environment in the cloud. PaaS includes infrastructure — servers, storage, and networking — but 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.
You plan to deploy several Azure virtual machines. You need to ensure that the services running on the virtual machines are available if a single data center fails. Solution: You deploy the virtual machines to a scale set. Does this meet the goal?
No. This answer does not specify that the scale set will be configured across multiple data centers so this solution does not meet the goal.
Azure Cosmos DB is an example of a __________ offering
Platform as a Service (PaaS)
You plan to migrate a web application to Azure. The web application is accessed by external users. You need to recommend a cloud deployment solution to minimize the amount of administrative effort used to manage the web application. What should you include in the recommendation? A. Software as a Service (SaaS) B. Platform as a Service (PaaS) C. Infrastructure as a Service (IaaS) D. Database as a Service (DaaS)
Platform as a Service. Azure App Service is a platform-as-a-service (PaaS) offering that lets you create web and mobile apps for any platform or device and connect to data anywhere, in the cloud or on-premises.
Hybrid Cloud
Provides a choice to use on-premises or cloud-based resources
Private Cloud
Provides complete control over security
You have several virtual machines in an Azure subscription. You create a new subscription.
The virtual machines can be moved to the new subscription
Which cloud deployment solution is used for Azure virtual machines and Azure SQL databases?
VMs - IaaS (Infrastructure as a service) SQL databases - PaaS (Platform as as service)
True (VMs)
When an Azure virtual machine is stopped, you continue to pay storage costs associated to the virtual machine
You plan to deploy several Azure virtual machines. You need to ensure that the services running on the virtual machines are available if a single data center fails. Solution: You deploy the virtual machines to two or more regions. Does this meet the goal?
Yes
Your company plans to migrate all its data and resources to Azure. The company's migration plan states that only Platform as a Service (PaaS) solutions must be used in Azure. You need to deploy an Azure environment that meets the company migration plan. Solution: You create an Azure App Service and Azure SQL databases. Does this meet the goal?
Yes, Azure App Service and Azure SQL databases are examples of Azure PaaS solutions.
You plan to deploy several Azure virtual machines. You need to ensure that the services running on the virtual machines are available if a single data center fails. Solution: You deploy the virtual machines to two or more availability zones. Does this meet the goal?
Yes. Availability zones expand the level of control you have to maintain the availability of the applications and data on your VMs. An Availability Zone is a physically separate zone, within an Azure region. Each Availability Zone has a distinct power source, network, and cooling. By architecting your solutions to use replicated VMs in zones, you can protect your apps and data from the loss of a datacenter. If one zone is compromised, then replicated apps and data are instantly available in another zone.
Each Azure subscription can contain multiple account administrators
You can assign additional account administrators in the Azure Portal.
You plan to deploy 20 virtual machines to an Azure environment. To ensure that a virtual machine named VM1 cannot connect to the other virtual machines, VM1 must
be deployed to a separate virtual network
When you are implementing a Software as a Service (SaaS) solution, you are responsible for
configuring the SaaS solution.
Azure Site Recovery provides _________ for virtual machines
fault tolerance. Azure Site Recovery helps ensure business continuity by keeping business apps and workloads running during outages.
You have an Azure environment that contains 10 web apps. To which URL should you connect to manage all the Azure resources?
https://portal.azure.com
An Azure web app that queries an on-premises Microsoft SQL server is an example of a __________ cloud. -hybrid -multi-vendor -private -public
hybrid
An Organization that hosts its infrastructure ___________ no longer requires a data center
in the public cloud
When planning to migrate a public website to Azure, you must plan to
pay monthly usage costs.
When you need to delegate permissions to several Azure virtual machines simultaneously, you must deploy the Azure virtual machines
to the same resource group.
