AZ-305 Design business continuity solutions Practice Test 6 — 15 Questions

Question 1

Refer to the exhibit. You are reviewing an Azure Site Recovery replicated item for a VM. The replication health is Normal, and the last recovery point is at 10:30 AM. The primary region experiences a failure at 10:35 AM. You initiate a failover at 10:40 AM. What is the maximum potential data loss?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

5 minutes of data. The last recovery point was at 10:30 AM, and the failover was initiated at 10:40 AM. Since the failure occurred at 10:35 AM, any data written between 10:30 AM and 10:35 AM (5 minutes) that was not yet replicated to the recovery point is lost. Azure Site Recovery replicates asynchronously, so the maximum potential data loss equals the time between the last successful recovery point and the failure event.

Answer

15 minutes of data

Answer

0 minutes of data

Answer

10 minutes of data

Question 2

Your company uses Azure Backup to protect on-premises file servers and Azure VMs. The compliance team requires that backup data be stored in a secondary region to protect against regional disasters. Which Azure Backup feature should you enable?

Accepted Answer

Enable geo-redundant storage (GRS) for the Recovery Services vault. Azure Backup uses the Recovery Services vault as its management and storage container. By enabling geo-redundant storage (GRS) on the vault, backup data is automatically replicated to a paired secondary Azure region, meeting the compliance requirement for off-site disaster recovery without any additional configuration or separate vault.

Answer

Use Azure Site Recovery to replicate the backup data

Answer

Configure backup policies to back up directly to the secondary region

Answer

Use a Recovery Services vault in the secondary region

Question 3

Which THREE of the following are best practices for designing a business continuity solution using Azure Site Recovery? (Select THREE.)

Accepted Answer

Perform test failovers regularly to validate the recovery plan. Azure Site Recovery (ASR) recommends performing test failovers regularly to validate that the recovery plan works as expected without impacting production workloads. Test failovers use isolated networks to verify replication health, application consistency, and RTO/RPO targets, ensuring the actual failover process is reliable.

Answer

Configure automatic failover for all VMs without manual intervention

Answer

Use a single target region for all VMs to simplify management

Question 4

A company runs a web application on Azure App Service with a Standard tier plan. The application uses an Azure SQL Database (DTU-based) for storage. The business requires that the application remain available in the event of a single Azure region outage. Which solution meets the requirement with the least administrative effort?

Accepted Answer

Deploy an additional App Service in a secondary region and use Azure SQL Database active geo-replication. Deploying an additional App Service in a secondary region and using Azure SQL Database active geo-replication ensures that both the compute and data tiers can fail over to a different Azure region during a regional outage. Active geo-replication creates readable secondary replicas of the SQL Database in the paired region, and with App Service, you can use Azure Front Door or Traffic Manager to route traffic to the secondary instance. This solution meets the availability requirement with minimal administrative overhead, as geo-replication is managed by Azure and does not require complex manual synchronization.

Answer

Use an App Service Environment (ASE) in a single region with App Service plans in multiple availability zones

Answer

Use Azure Front Door to route traffic to a secondary App Service in the same region

Answer

Configure Azure Backup for the App Service and SQL Database

Question 5

You are designing a business continuity solution for a critical application that uses Azure Cosmos DB with multiple write regions. The application is deployed in the East US and West Europe regions. The business requires that if one region fails, the application can continue to serve writes in the remaining region with no data loss. Which consistency level should you use?

Accepted Answer

Bounded staleness. With multiple write regions, Cosmos DB does not support strong consistency. Among the supported consistency levels (Eventual, Session, and Bounded staleness), Bounded staleness provides the strongest consistency guarantee with a configurable staleness window. However, it cannot guarantee zero data loss during a regional failure because writes within the staleness window may be lost. For the requirement of no data loss, a single-write-region configuration with strong consistency is necessary. In a multi-master setup, Bounded staleness is the best choice to minimize data loss while maintaining availability.

Answer

Strong

Answer

Eventual

Answer

Session

Question 6

A company runs a critical SQL Server database on an Azure VM. The database is used by a line-of-business application that requires minimal data loss (RPO of 5 seconds) and fast recovery (RTO of 15 minutes). The VM is in a single region. What should you recommend to meet the RPO and RTO requirements?

Accepted Answer

Migrate the database to Azure SQL Managed Instance and configure a failover group with a secondary in another region.. Azure SQL Managed Instance with a failover group provides automated geo-replication with an RPO of 5 seconds and an RTO of 15 minutes, meeting the critical requirements. The failover group uses a secondary replica in another region, enabling automatic or manual failover with minimal data loss and fast recovery, which is ideal for a line-of-business application with strict RPO/RTO targets.

Answer

Use Azure Storage geo-redundant storage (GRS) for the VM's managed disks.

Answer

Deploy the VM in an Availability Set and use SQL Server Always On Availability Groups.

Answer

Configure Azure Backup for the VM with application-consistent backups every 5 minutes.

Question 7

You are designing a business continuity solution for a global e-commerce platform that runs on Azure Kubernetes Service (AKS) in multiple regions. The application must remain available even if an entire Azure region fails. The application uses Azure Cosmos DB for its database. You need to ensure that the application can continue to serve traffic with minimal disruption. What should you recommend?

Accepted Answer

Configure Cosmos DB with multi-region writes and deploy AKS clusters in two regions behind Azure Front Door.. It combines multi-region writes in Azure Cosmos DB with AKS clusters deployed in two regions behind Azure Front Door. Multi-region writes provide active-active failover with RTO near zero and 99.999% read/write availability, while Azure Front Door offers global load balancing and automatic failover at the application layer. This architecture ensures the application remains available even if an entire Azure region fails, with minimal disruption.

Answer

Use Cosmos DB with geo-redundant storage and deploy a single AKS cluster with Azure Site Recovery.

Answer

Deploy AKS clusters in two regions with Azure Traffic Manager and use Cosmos DB single-region writes with async replication.

Answer

Deploy the application to a single region and use Azure Backup for Cosmos DB to restore in another region.

Question 8

A company stores backup data for Azure VMs in a Recovery Services vault. They need to ensure that the backup data is protected from accidental deletion and remains available even if the entire Azure region fails. What should you configure?

Accepted Answer

Enable soft delete in the vault and use geo-redundant storage (GRS).. Enabling soft delete protects backup data from accidental deletion by retaining deleted data for a default retention period of 14 days, allowing recovery. Using geo-redundant storage (GRS) replicates vault data to a paired secondary Azure region, ensuring availability even if the entire primary region fails. Together, these features meet both protection and regional failover requirements.

Answer

Assign Azure RBAC roles to limit access to the vault.

Answer

Enable immutable storage for the vault.

Answer

Enable locally redundant storage (LRS) for the vault.

Question 9

Your company runs an on-premises application that needs to be failed over to Azure in the event of a disaster. The application uses a SQL Server database and requires an RPO of 15 minutes and an RTO of 1 hour. You plan to use Azure Site Recovery (ASR) for the VMs and Azure SQL Database for the database. Which combination of actions should you take?

Accepted Answer

Use ASR with 15-minute replication for the VMs and configure a failover group for Azure SQL Database with active geo-replication.. It meets both the RPO of 15 minutes and RTO of 1 hour. Azure Site Recovery (ASR) with 15-minute replication ensures VM replication within the RPO, while Azure SQL Database failover groups with active geo-replication provide automatic, continuous data synchronization and a fast, orchestrated failover for the database, achieving the required RTO.

Answer

Use ASR with 5-minute replication and configure SQL Server Log Shipping to an Azure VM.

Answer

Use ASR with 30-minute replication frequency and backup the SQL Server database every 15 minutes.

Answer

Use ASR with 15-minute replication and restore the SQL Server database from backup.

Question 10

You are designing a disaster recovery plan for a critical application that runs on Azure VMs. The VMs are in a single region and are backed up daily. The RPO is 1 hour and the RTO is 4 hours. The current backup solution cannot meet the RPO. You need to recommend a solution that meets the requirements with minimal cost. What should you do?

Accepted Answer

Implement Azure Site Recovery with a replication policy of 30 minutes.. Azure Site Recovery (ASR) replicates Azure VMs at a block level, enabling near-synchronous replication with configurable frequency. A 30-minute replication policy meets the 1-hour RPO by ensuring data loss is limited to at most 30 minutes, while also satisfying the 4-hour RTO through automated failover. This is the most cost-effective option because it uses existing VM storage and does not require additional database licensing or increased backup storage costs.

Answer

Configure SQL Server Always On Availability Groups across two Azure regions.

Answer

Increase the backup frequency to every 30 minutes.

Answer

Implement Azure Site Recovery with a replication policy of 15 minutes.

Question 11

A company needs to protect an Azure App Service web app from regional outages. The web app uses Azure SQL Database. They need to ensure that users are automatically redirected to a secondary region if the primary region fails. What should you configure?

Accepted Answer

Deploy the web app in two regions and use Azure Traffic Manager with priority routing.. Azure Traffic Manager with priority routing is a DNS-based traffic load balancer that enables automatic failover to a secondary region. When the primary region's endpoint is unhealthy, Traffic Manager redirects traffic to the secondary region. This meets the requirement for automatic redirection during regional outages. Azure Front Door, while also capable, is not strictly required; Traffic Manager is a simpler and cost-effective solution for this scenario.

Answer

Configure Azure Backup for the web app and restore in a secondary region.

Answer

Deploy the web app in a single region with a Standard Load Balancer and backend pool.

Answer

Deploy the web app in two regions and use Azure Front Door with an origin group and health probes.

Question 12

You have an Azure Storage account that stores critical data. You need to ensure that the data remains accessible if the primary region fails. The solution must minimize data loss and automatically failover. What should you configure?

Accepted Answer

Read-access geo-zone-redundant storage (RA-GZRS).. Read-access geo-zone-redundant storage (RA-GZRS) provides both zone redundancy within the primary region (for resilience to datacenter failures) and geo-redundancy to a secondary region (for resilience to a full regional outage). It also enables automatic failover (Microsoft-managed) and, crucially, read access to the secondary region even before failover occurs, minimizing data loss by allowing continuous reads from the secondary during a disaster.

Answer

Zone-redundant storage (ZRS) with customer-managed failover.

Answer

Locally redundant storage (LRS) with soft delete.

Answer

Geo-redundant storage (GRS) with manual failover.

Question 13

Your company runs a mission-critical application on Azure VMs in a single region. The application requires an RPO of 5 minutes and an RTO of 30 minutes. You plan to use Azure Site Recovery (ASR) to replicate the VMs to a secondary region. The VMs use managed disks. However, during a disaster recovery drill, you discover that the failover takes longer than expected. What is the most likely cause?

Accepted Answer

The VMs have large attached data disks that require significant time to synchronize.. During a disaster recovery drill, Azure Site Recovery (ASR) must synchronize all data from the source managed disks to the target region before failover can complete. Large attached data disks contain significant amounts of data that need to be replicated, and if the initial replication or ongoing synchronization is not fully caught up, the failover process will be delayed while waiting for the final delta sync. This directly impacts the RTO, as the time to complete failover includes the time required to apply the latest changes to the replicated disks.

Answer

The replication policy is set to 30 minutes.

Answer

The Azure Hybrid Benefit is not applied to the VMs.

Answer

The recovery plan includes too many manual steps.

Question 14

A company needs to back up an Azure virtual machine that runs a file server. They want to restore individual files quickly without restoring the entire VM. Which backup option should they use?

Accepted Answer

Azure Backup for Azure VMs with file-level restore.. Azure Backup for Azure VMs with file-level restore (option C) is correct because it allows you to mount the VM's backup as a drive on a designated recovery machine using iSCSI, enabling you to browse and copy individual files without restoring the entire VM. This meets the requirement for quick, granular file recovery from a VM backup.

Answer

Azure File Sync with cloud tiering.

Answer

Azure Backup using MARS agent with file and folder backup.

Answer

Azure Backup for Azure VMs with instant restore.

Question 15

Which TWO actions should you take to ensure business continuity for an Azure Functions app that processes messages from an Azure Service Bus queue?

Accepted Answer

Implement the event source pattern to replay messages in case of failure.. The event source pattern allows the Azure Functions app to replay messages from the Service Bus queue in the event of a failure, ensuring that no messages are lost and processing can resume from the last known good state. This pattern is essential for business continuity as it provides a mechanism to recover from transient or catastrophic failures by reprocessing events from the queue. Option B is correct because geo-replication on the Service Bus namespace provides regional redundancy, ensuring that the queue remains available even if an entire Azure region experiences an outage. This is a key component of a business continuity plan for messaging-based workloads. Options C, D, and E are incorrect because using a single namespace does not provide continuity, deploying in a single region creates a single point of failure, and Azure Backup does not protect the runtime state or message processing capabilities of a Functions app.

Answer

Use a single Service Bus namespace to simplify management.

Answer

Deploy the Functions app in a single region.

Answer

Configure Azure Backup for the Functions app.