AZ-305 Design business continuity solutions Practice Test 12 — 15 Questions

Question 1

Which TWO of the following Azure services can be used to enable automatic failover of a web application across Azure regions?

Accepted Answer

Azure Front Door. Azure Front Door is a global, scalable entry point that provides built-in automatic failover across regions using anycast-based routing and health probes. When a primary region becomes unhealthy, Front Door instantly routes traffic to the next available healthy backend, enabling seamless multi-region failover for web applications.

Answer

Azure DNS

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Azure Load Balancer

Answer

Azure Application Gateway

Question 2

A company runs a critical application on Azure VMs in a single region. They need to ensure the application can failover to another region with minimal data loss and a recovery time objective (RTO) of 1 hour. The application uses managed disks and SQL Server Always On availability groups. What is the MOST cost-effective solution that meets the requirements?

Accepted Answer

Use Azure Site Recovery to replicate VMs to a secondary region with a recovery plan. Azure Site Recovery (ASR) provides orchestrated replication and failover for Azure VMs, supporting both managed disks and SQL Server Always On availability groups. It meets the RTO of 1 hour by enabling a recovery plan that automates the failover sequence, and it minimizes data loss through continuous replication with a Recovery Point Objective (RPO) as low as 30 seconds. This is the most cost-effective solution because ASR replicates only changed blocks and does not require a continuously running secondary VM, unlike a full geo-redundant storage or cross-region Always On deployment.

Answer

Use Azure geo-redundant storage (GRS) for the managed disks and restore the VMs in the secondary region

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Use Azure availability zones to protect against regional failures

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Deploy SQL Server Always On availability groups across two regions

Question 3

Refer to the exhibit. The JSON snippet shows the properties of a replication-protected item in Azure Site Recovery. What is the MOST LIKELY reason for the replication health being 'Critical'?

Accepted Answer

A planned failover was completed, stopping replication. When a planned failover is completed in Azure Site Recovery, replication is automatically stopped and the replication health status changes to 'Critical' because the protected item is no longer actively replicating to the recovery region. This is expected behavior after a planned failover, as the source and target are now synchronized and replication is disabled to prevent data overwrites. The 'Critical' health indicator in this context reflects the intentional cessation of replication, not a fault.

Answer

The replication storage account is misconfigured

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There is a network connectivity issue between the on-premises site and Azure

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A test failover was initiated but not cleaned up

Question 4

A company uses Azure Backup to protect on-premises Windows servers and Azure VMs. They need to restore a file from a backup of an Azure VM that was deleted three months ago. The backup policy retains daily backups for 30 days and weekly backups for 12 months. What is the CORRECT way to restore the file?

Accepted Answer

Use the file-level recovery option to mount the recovery point as a drive and copy the file. Azure Backup supports file-level recovery for Azure VMs by mounting the recovery point as a network drive using iSCSI. This allows you to browse and copy individual files without restoring the entire VM or disk. Since the backup is older than 30 days but within 12 months, a weekly recovery point is available and can be used for file-level restore.

Answer

Azure Backup does not support file-level restore for Azure VMs; restore the entire disk

Answer

Restore the entire VM from a weekly recovery point and then copy the file

Answer

Use the 'Restore to a new VM' option and select the file during the restore process

Question 5

Refer to the exhibit. You are deploying an ARM template to configure backup for an Azure Web App. The deployment fails with an error: 'The resource 'Microsoft.Web/sites/config' cannot be nested under a parent resource that is not deployed.' What is the MOST LIKELY cause?

Accepted Answer

The parent web app resource is not defined in the template. The error indicates that the ARM template is trying to define a child resource (Microsoft.Web/sites/config) under a parent web app that has not been deployed within the same template. In ARM templates, nested resources require the parent resource to be defined in the same template, typically with a dependsOn element or by nesting the child resource inside the parent's resources array. Since the parent web app is missing from the template, the deployment fails because the resource manager cannot resolve the parent scope.

Answer

The storageAccountUrl property uses a reference() that cannot be resolved

Answer

The apiVersion '2022-03-01' is not supported for this resource type

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The backup schedule frequency interval is invalid

Question 6

A company runs a production Azure SQL Database. They need a business continuity solution that allows point-in-time restore to any time within the last 7 days and provides geo-failover capability with RTO of 1 hour. What is the MOST COST-EFFECTIVE option?

Accepted Answer

Configure active geo-replication with a readable secondary in another region. Active geo-replication with a readable secondary in another region meets the 7-day point-in-time restore requirement (each database has automated backups retained for 7 days by default) and provides geo-failover with an RTO of 1 hour, as the secondary is continuously synchronized and can be manually failed over. It is more cost-effective than auto-failover groups because it does not require the additional listener and routing overhead, and you pay only for the secondary compute and storage.

Answer

Use Azure SQL Database long-term retention (LTR) for backups

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Deploy a zone-redundant Azure SQL Database

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Deploy auto-failover groups with a secondary in another region

Question 7

Refer to the exhibit. A role assignment has a condition that controls blob deletion. A user assigned this role tries to delete a blob with tag 'Project' set to 'ProjectB'. What will happen?

Accepted Answer

The deletion is denied because the blob does not have the required tag. The role assignment condition likely requires the blob to have the tag 'Project' set to a specific value (e.g., 'ProjectA'). Since the blob in question has the tag 'Project' set to 'ProjectB', the condition is not satisfied, and the deletion is denied. Option C correctly identifies this mismatch.

Answer

The deletion is allowed because the condition only applies to write operations

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The deletion is allowed because the condition does not affect blob deletion

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The deletion is denied because the condition version is 2.0 and not supported

Question 8

A company uses Azure Cosmos DB with a single write region. They need to ensure business continuity with an RPO of 5 seconds and RTO of 1 minute in case of a regional outage. What configuration should they use?

Accepted Answer

Enable multi-region writes with automatic failover. Multi-region writes with automatic failover allows any Azure Cosmos DB region to accept writes, and if the primary region fails, the SDK automatically routes write requests to the next nearest region. This configuration can achieve an RPO of 0 (no data loss) and an RTO of less than a minute, which exceeds the required RPO of 5 seconds and RTO of 1 minute. The key is that with multi-region writes, there is no need to promote a read region to a write region, eliminating the failover delay and potential data loss.

Answer

Enable automatic failover from a single write region to a read region

Answer

Deploy Cosmos DB in an availability zone-enabled region

Answer

Use manual failover to a secondary read region

Question 9

Which TWO actions should you take to ensure business continuity for an Azure SQL Managed Instance? (Choose two.)

Accepted Answer

Enable automated backups with a retention period that meets your RPO. Automated backups are a fundamental component of business continuity for Azure SQL Managed Instance. They provide point-in-time restore capabilities within a configurable retention period (7-35 days), directly supporting your Recovery Point Objective (RPO) by allowing you to restore to any point within that window. This ensures that data loss is minimized to the backup frequency, which is typically every 5-10 minutes for transaction log backups.

Answer

Use Azure Site Recovery to replicate the instance to another region

Answer

Configure a readable secondary replica in the same region

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Enable long-term retention (LTR) for backups

Question 10

Which THREE of the following are valid strategies for designing a disaster recovery plan for Azure Virtual Desktop? (Choose three.)

Accepted Answer

Use Azure File Sync to replicate FSLogix profile shares to a secondary region. Option B is correct because Azure File Sync can replicate the SMB file shares that host FSLogix profile containers and Office container VHDX files to a secondary region, giving users access to their profiles during a regional failover. Option C is correct because pre-deploying a secondary host pool in the DR region and using Azure Traffic Manager (or a similar global load balancer) to redirect user connections is a standard AVD multi-region DR pattern that reduces recovery time. Option E is correct because Azure Site Recovery can continuously replicate session host VMs to a secondary region so they can be failed over and brought online as replacement session hosts during a disaster. Option A is not valid because Azure Front Door does not proxy RDP traffic (TCP 3389); it is an HTTP/HTTPS layer-7 service, and AVD clients connect to the gateway/broker, not through Front Door. Option D is not a valid DR strategy because Azure Backup restores data and VMs but does not provide the low-RTO regional failover or the AVD control-plane/broker redirection needed for a disaster recovery plan.

Answer

Use Azure Front Door to route RDP traffic to the secondary region

Answer

Rely on Azure Backup to restore session hosts in the secondary region

Question 11

Which TWO of the following are requirements for using Azure Site Recovery to protect Azure VMs? (Choose two.)

Accepted Answer

VMs must be using managed disks. Azure Site Recovery for Azure VMs requires that the VMs use managed disks. Unmanaged disks are not supported because Site Recovery relies on the managed disk snapshot and replication capabilities to enable consistent, application-aware replication across regions. Managed disks also provide better performance, reliability, and integration with Azure's recovery services.

Answer

VMs must use unmanaged disks

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VMs must be connected to a virtual network that has a VPN gateway to the target region

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VMs must be at least Standard_D2s_v3 size

Question 12

Which THREE of the following are best practices for designing a business continuity solution using Azure Backup? (Choose three.)

Accepted Answer

Enable soft delete to protect backup data from accidental deletion. Enabling soft delete in Azure Backup protects backup data from accidental or malicious deletion by retaining deleted backup data for an additional 14 days (configurable up to 14 days). This ensures that even if a backup item is deleted, the data remains recoverable, which is a critical best practice for business continuity.

Answer

Configure a single backup policy for all resources to simplify management

Answer

Grant all users 'Backup Contributor' role to ensure backups are taken

Question 13

Which TWO of the following are valid options to achieve high availability for Azure SQL Database? (Choose two.)

Accepted Answer

Deploy a zone-redundant Azure SQL Database. Azure SQL Database offers zone-redundant configuration that automatically replicates databases across multiple Azure Availability Zones within the same region, providing an SLA of 99.995% uptime. This built-in high availability feature uses quorum-based commit and automatic failover without any manual intervention, ensuring data durability and business continuity during zone-level failures.

Answer

Deploy a single database with locally redundant storage (LRS)

Answer

Configure manual failover to a secondary replica in the same region

Answer

Configure SQL Server Always On availability groups

Question 14

Your organization has a critical application deployed on Azure VMs in the West US region. The application uses a Standard_D8s_v3 VM with two data disks (512 GB each) and a separate log disk (256 GB). The application writes data continuously to the data disks and logs. The business continuity requirements are: RPO of 15 minutes, RTO of 2 hours, and the ability to recover to a specific point in time within the last 7 days. You need to design a disaster recovery solution that replicates the VMs and disks to the East US region. The solution must also support failback to West US after a disaster. What should you do?

Accepted Answer

Use Azure Site Recovery to replicate the VMs to East US with a recovery plan that includes the VM and disks, and configure failback using reprotection. Azure Site Recovery (ASR) is the correct service for orchestrating replication, failover, and failback of Azure VMs between regions. It supports the required RPO of 15 minutes (using near-synchronous replication with change tracking) and RTO of 2 hours, and allows point-in-time recovery via recovery points. The reprotection and failback workflow enables you to replicate back to West US after a disaster, meeting the full business continuity requirements.

Answer

Use Azure Migrate to migrate the VMs to East US and then set up replication back to West US

Answer

Configure Azure Backup for the VMs with a backup policy that has a 15-minute frequency and replicate backups to the East US region using geo-redundant storage

Answer

Use Azure Storage geo-redundant storage (GRS) for the managed disks and manually attach the disks to a new VM in East US during a disaster

Question 15

Your company runs a critical web application on Azure Virtual Machines in a single region. You need to design a disaster recovery solution that meets a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 1 hour. The solution must be cost-effective for a planned failover test. What should you do?

Accepted Answer

Configure Azure Site Recovery (ASR) with replication to a paired secondary region and perform regular test failovers.. Azure Site Recovery (ASR) replicates Azure VMs to a paired secondary region with near-synchronous replication, achieving an RPO of 15 minutes and an RTO of 1 hour. It supports cost-effective test failovers by performing non-disruptive drills in an isolated network, validating recovery without impacting production.

Answer

Create a read-only replica of the VMs in another region using Azure SQL Database geo-replication.

Answer

Deploy the VMs across two Azure Availability Zones within the same region.

Answer

Use Azure Backup with daily backups to a Recovery Services vault in a paired region.