AZ-900 Microsoft Azure Fundamentals
HOTSPOTFor each of the following statements, select Yes if the statement is true. Otherwise, select No.NOTE: Each correct selection is worth one point.Hot Area:
Box 1: No A PaaS solution does not provide access to the operating system. The Azure Web Apps service provides an environment for you to host your webapplications. Behind the scenes, the web apps are hosted on virtual machines running IIS. However, you have no direct access to the virtual machine,the operating system or IIS.
Box 2: Yes A PaaS solution that hosts web apps in Azure does provide the ability to scale the platform automatically. This is known as autoscaling. Behind the scenes, the web apps are hosted on virtual machines running IIS. Autoscaling means adding more load-balanced virtual machines to host web apps.
Box 3: Yes PaaS provides a framework that developers can build upon to develop or customize cloud-based applications. PaaS development tools can cut the time it takes to code new apps with pre-coded application components built into the platform, such as workflow, directory services, security features, search and so on.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.NOTE: Each correct selection is worth one point.
Box 1: Yes Traditionally, IT expenses have been considered a Capital Expenditure (CapEx). Today, with the move to the cloud and the pay-as-you-go model,organizations have the ability to stretch their budgets and are shifting their IT CapEx costs to Operating Expenditures (OpEx) instead. This flexibility, inaccounting terms, is now an option due to the “as a Service” model of purchasing software, cloud storage, and other IT-related resources.
Box 2: No Two virtual machines using the same size could have different disk configurations. Therefore, the monthly costs could be different.
Box 3: Yes When an Azure virtual machine is stopped, you don’t pay for the virtual machine. However, you do still pay for the storage costs associated to the virtualmachine. The most common storage costs are for the disks attached to the virtual machines. There are also other storage costs associated with avirtual machine such as storage for diagnostic data and virtual machine backups.
This question requires that you evaluate the underlined text to determine if it is correct.When you are implementing a Software as a Service (SaaS) solution, you are responsible for configuring high availability.Instructions: Review the underlined text. If it makes the statement correct, select “No change is needed”. If the statement is incorrect, select the answerchoice that makes the statement correct.
A. No change is needed.
B. defining scalability rules
C. installing the SaaS solution
D. configuring the SaaS solution
Correct Answer: D
Section: Understand Cloud Concepts
Explanation: When you are implementing a Software as a Service (SaaS) solution, you are responsible for configuring the SaaS solution. Everything else ismanaged by the cloud provider. SaaS requires the least amount of management. The cloud provider is responsible for managing everything, and the end-user just uses the software. 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.
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?
A. fault tolerance
D. low latency
Correct Answer: A
Section: Understand Cloud Concepts
Explanation: Fault tolerance is the ability of a system to continue to function in the event of a failure of some of its components. In this question, you could have servers that are replicated across datacenters. Availability zones expand the level of control you have to maintain the availability of the applications and data on your VMs. Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more data centers equipped with independent power, cooling, and networking. To ensure resiliency, there is a minimum of three separate zones in all enabled regions. The physical separation of Availability Zones within a region protects applications and data from datacenter failures. With Availability Zones, Azure offers industry best 99.99% VM uptime SLA. By architecting your solutions to use replicated VMs in zones, you can protect your applications and data from the loss of a datacenter. If one zone is compromised, then replicated apps and data are instantly available in another zone.
This question requires that you evaluate the underlined text to determine if it is correct. An organization that hosts its infrastructure in a private cloud can close its data center. 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. in a hybrid cloud
C. in the public cloud
D. on a Hyper-V host
Correct Answer: C
Section: Understand Cloud Concepts:Explanation: A private cloud is hosted in your datacenter. Therefore, you cannot close your datacenter if you are using a private cloud. A public cloud is hosted externally, for example, in Microsoft Azure. An organization that hosts its infrastructure in a public cloud can close its datacenter. The public cloud is the most common deployment model. In this case, you have no local hardware to manage or keep up-to-date – everything runs on your cloud provider’s hardware. Microsoft Azure is an example of a public cloud provider.In a private cloud, you create a cloud environment in your own datacenter and provide self-service access to compute resources to users in your organization. This offers a simulation of a public cloud to your users, but you remain completely responsible for the purchase and maintenance of the hardware and software services you provide.