AZ-104 Question #231: Real Exam Question with Answer & Explanation

Question

Case Study 4 - ADatum Overview ADatum Corporation is a financial company that has two main offices in New York and Los Angeles. ADatum has a subsidiary named Fabrikam, Inc. that shares the Los Angeles office. ADatum is conducting an initial deployment of Azure services to host new line-of-business applications and is preparing to migrate its existing on-premises workloads to Azure. ADatum uses Microsoft Exchange Online for email. Existing Environment On-Premises Environment The on-premises workloads run on virtual machines hosted in a VMware vSphere 6 infrastructure. All the virtual machines are members of an Active Directory forest named adatum.com and run Windows Server 2016. The New York office uses an IP address space of 10.0.0.0/16. The Los Angeles office uses an IP address space of 10.10.0.0/16. The offices connect by using a VPN provided by an ISP. Each office has one Azure ExpressRoute circuit that provides access to Azure services and Microsoft Online Services. Routing is implemented by using Microsoft peering. The New York office has a virtual machine named VM1 that has the vSphere console installed. Azure Environment You provision the Azure infrastructure by using the Azure portal. The infrastructure contains the resources shown in the following table. AG1 has two backend pools named Pool11 and Pool12. AG2 has two backend pools named Pool21 and Pool22. Requirements Planned Changes ADatum plans to migrate the virtual machines from the New York office to the East US Azure region by using Azure Site Recovery. Infrastructure Requirements ADatum identifies the following infrastructure requirements: A new web app named App1 that will access third-parties for credit card processing must be deployed. A newly developed API must be implemented as an Azure function named App2. App2 will use a blob storage trigger. App2 must process new blobs immediately. The Azure infrastructure and the on-premises infrastructure must be prepared for the migration of the VMware virtual machines to Azure. The sizes of the Azure virtual machines that will be used to migrate the on-premises workloads must be identified. All migrated and newly deployed Azure virtual machines must be joined to the adatum.com domain. AG1 must load balance incoming traffic in the following manner: AG2 must load balance incoming traffic in the following manner: ER1 must route traffic between the New York office and platform as a service (PaaS) services in the East US Azure region, as long as ER1 is available. ER1 must route traffic between the Los Angeles office and the PaaS services in the West US region, as long as ER2 is available. ER1 and ER2 must be configured to fail over automatically. Application Requirements App2 must be available to connect directly to the private IP addresses of the Azure virtual machines. App2 will be deployed directly to an Azure virtual network. Inbound and outbound communications to App1 must be controlled by using NSGs. Pricing Requirements ADatum identifies the following pricing requirements: The cost of App1 and App2 must be minimized The transactional charges of Azure Storage accounts must be minimized Hotspot Question You need to provision the resources in Azure to support the virtual machine that will be migrated from the New York office. What should you include in the solution? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point. Answer:

Options

• __typehotspot
• variantdropdown

Explanation

To support a hybrid cloud migration, the Azure VNet must use a non-overlapping IP address space, and a StorageV2 account is the recommended standard for replication storage.

Approach. 1. Select '10.20.0.0/16' for the IP address space. The on-premises offices use 10.0.0.0/16 (New York) and 10.10.0.0/16 (Los Angeles), and they connect to Azure via ExpressRoute. To ensure proper routing across the hybrid connection without conflicts, the Azure VNet must have a unique, non-overlapping IP space. 2. Select 'StorageV2 (general purpose v2)' for the storage account kind. General-purpose v2 is Microsoft's recommended storage account type for almost all workloads, including acting as cache or target storage for Azure Migrate and Azure Site Recovery. It supports the latest features, security protocols, and lifecycle management.

Common mistakes.

• common_mistake. Selecting 10.0.0.0/16 or 10.10.0.0/16 is a critical networking mistake because it creates an IP address overlap with the on-premises networks, which will break routing over the ExpressRoute/VPN connection. Choosing 'Blob storage' is incorrect because VM disk replication requires page blobs, typically managed within a general-purpose account. Choosing 'Storage (general purpose v1)' is incorrect because it is a legacy account type that Microsoft advises against using for new deployments.

Concept tested. Hybrid Network IP Address Planning and Azure Storage Account Types

Reference. https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#what-address-ranges-can-i-use-in-my-vnets

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