AZ-305 Design business continuity solutions Practice Test 5 — 15 Questions

Question 1

A company runs a critical application on Azure VMs in a single region. The application uses Azure SQL Database as its data store. The company needs a disaster recovery solution that can fail over the entire application stack (VMs and database) to another region with a Recovery Point Objective (RPO) of 5 minutes and a Recovery Time Objective (RTO) of 1 hour. The solution must be automated and minimize manual steps. Which combination of Azure services should they implement?

Accepted Answer

Azure Site Recovery for VMs and active geo-replication with auto-failover groups for Azure SQL Database. Azure Site Recovery (ASR) orchestrates replication and automated failover of Azure VMs to a secondary region, meeting the RTO of 1 hour. Active geo-replication with auto-failover groups for Azure SQL Database provides a readable secondary replica in another region with an RPO of 5 seconds (well under the 5-minute requirement) and enables automatic failover without manual intervention. Together, they automate the entire application stack failover, minimizing manual steps.

Answer

Azure Backup for VMs and Azure SQL Database backup to another region

Answer

Azure Site Recovery for VMs and Azure DNS for database failover

Answer

Azure Load Balancer for VMs and Azure SQL Database failover groups

Question 2

A company runs a web application on Azure VMs in a single region. They need to ensure that if the region fails, the VMs are replicated to another region and can be started automatically. Which Azure service should they use?

Accepted Answer

Azure Site Recovery. Azure Site Recovery (ASR) orchestrates replication, failover, and failback of Azure VMs from one region to another. It continuously replicates VM disks to the target region and, upon failover, automatically starts the replicated VMs, meeting the requirement for regional disaster recovery with automated startup.

Answer

Azure Backup

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Azure Traffic Manager

Answer

Azure Load Balancer

Question 3

A company runs a critical application on Azure VMs in a single region. The database tier uses SQL Server on Azure VMs. They need to implement disaster recovery to a secondary region with an RPO of 30 seconds and an RTO of 10 minutes for the database, and an RPO of 5 minutes and RTO of 1 hour for the VMs. The solution must minimize data loss and be cost-effective. Which combination should they use?

Accepted Answer

Azure Site Recovery for VMs and SQL Server Always On Availability Groups with asynchronous commit. Option D is correct because Azure Site Recovery (ASR) provides VM replication to a secondary region with an RPO of 5 minutes and RTO of 1 hour, meeting the VM requirements. SQL Server Always On Availability Groups with asynchronous commit can achieve an RPO of 30 seconds (or less) while minimizing cost by avoiding synchronous replication overhead, and it supports automatic failover for the database tier, meeting the 10-minute RTO.

Answer

Azure Site Recovery for VMs and SQL Server Always On Availability Groups with synchronous commit

Answer

Azure Site Recovery for VMs and SQL Server log shipping

Answer

Azure Backup for VMs and SQL Server database mirroring

Question 4

A company runs a critical database on Azure SQL Database in the West US region. They need to implement disaster recovery to East US with an RPO of 1 minute and RTO of 1 hour. They also want to use the secondary database for read-only workloads during normal operations. The solution must be fully managed. Which Azure SQL Database feature should they enable?

Accepted Answer

Auto-failover group with read-scale. Active geo-replication with a failover group (Option B) provides a fully managed disaster recovery solution with an RPO of 1 minute and RTO of 1 hour. It allows the secondary database in East US to be used for read-only workloads during normal operations via the read-scale listener endpoint. This meets all requirements: fully managed, low RPO/RTO, and read-only access to the secondary.

Answer

Active geo-replication with failover group

Answer

Geo-restore

Answer

Zone-redundant configuration

Question 5

A company runs an Azure SQL Database in a single region. They need to ensure that the database can be restored to any point in time within the last 90 minutes with a granularity of 1 minute. Which feature should they enable?

Accepted Answer

Point-in-time restore. Point-in-time restore (PITR) for Azure SQL Database automatically creates backups every 5-10 minutes and retains them for the default retention period of 7 days (configurable up to 35 days). This allows restoring the database to any second within the retention window, meeting the requirement of 1-minute granularity for the last 90 minutes. The feature is built-in and does not require any additional configuration beyond setting the desired retention period.

Answer

Active geo-replication

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Auto-failover groups

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Long-term backup retention

Question 6

A company runs a critical application on Azure VMs and an Azure SQL Managed Instance in a single region. They need a disaster recovery solution with a Recovery Point Objective (RPO) of 5 minutes for the database and a Recovery Time Objective (RTO) of 2 hours for the entire stack. They want to minimize cost and use native Azure services. Which combination should they implement?

Accepted Answer

Azure Site Recovery for VMs and auto-failover groups for the database. Option C is correct because Azure Site Recovery (ASR) provides orchestrated replication and failover for Azure VMs, meeting the 2-hour RTO for the entire stack, while auto-failover groups for Azure SQL Managed Instance enable automatic, synchronous or asynchronous replication with an RPO as low as 5 minutes using the built-in distributed availability groups feature. This combination uses native Azure services without manual scripting, minimizing cost and complexity.

Answer

Azure Site Recovery for VMs and active geo-replication for the database

Answer

Azure Backup for VMs and auto-failover groups for the database

Answer

Deploy a second region with VMs and database replicas manually configured and Azure Traffic Manager

Question 7

A company runs a web application on Azure App Service with a backing Azure SQL Database in a single region. They need to ensure availability during an Azure region outage. The solution must automatically fail over the entire application stack with minimal data loss and redirect user traffic to the secondary region. Which combination of Azure services should they implement?

Accepted Answer

Azure Front Door with active-active or active-passive routing and auto-failover groups for Azure SQL Database. Azure Front Door provides global HTTP(S) load balancing with automatic failover between regions, and when combined with auto-failover groups for Azure SQL Database, it ensures the entire application stack (web + database) fails over together with minimal data loss. The auto-failover group replicates the database synchronously within the same region and asynchronously across regions, allowing a user-configurable grace period to trade off between data loss and availability. This matches the requirement for automatic, coordinated failover of the full stack and traffic redirection.

Answer

Azure Traffic Manager with active-passive and geo-replication for Azure SQL Database

Answer

Azure Application Gateway with backend pools in multiple regions and SQL Database failover groups

Answer

Azure Load Balancer with multiple regions and Azure SQL Database automatic failover

Question 8

A company runs a global e-commerce platform on Azure VMs in a single region. They need to replicate the VMs to a secondary region for disaster recovery. Recovery must be possible within 30 minutes of a failure. The VMs run custom software that must be started in a specific order (database tier before web tier). Which Azure service should they use to meet both the replication and orchestration requirements?

Accepted Answer

Azure Site Recovery with recovery plans. Azure Site Recovery (ASR) with recovery plans is the correct choice because it provides both VM replication to a secondary region and the ability to orchestrate the startup order of VMs. Recovery plans allow you to group VMs into tiers (e.g., database and web) and define dependencies, ensuring the database tier starts before the web tier. ASR meets the 30-minute recovery time objective (RTO) by enabling failover to the secondary region within that timeframe.

Answer

Azure Backup with cross-region restore

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Azure Migrate with replication

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Azure Automation runbooks

Question 9

A mission-critical web application must tolerate a full Azure region outage. The business requires automatic failover and global HTTP acceleration. Which two components should be included in the design? (Choose 2.)

Accepted Answer

Deploy the application to at least two Azure regions.. Option A is correct because deploying the application to at least two Azure regions provides geographic redundancy, ensuring that if one entire region fails, the application can still operate from the other region. This is a fundamental requirement for tolerating a full region outage. Option B is correct because Azure Front Door provides global HTTP acceleration and automatic failover by using health probes to monitor endpoint health and routing traffic to healthy origins, which meets the business requirements for both automatic failover and performance.

Answer

Use only availability zones in one region.

Answer

Use Azure Bastion for failover routing.

Question 10

A database workload has an RPO of 15 minutes and an RTO of 4 hours. Cost is more important than near-zero data loss. Which design is usually more appropriate than synchronous multi-region replication?

Accepted Answer

Use scheduled backups or asynchronous replication aligned to the RPO/RTO.. Option A is correct because the workload's RPO of 15 minutes and RTO of 4 hours, combined with a cost-sensitive requirement that deprioritizes near-zero data loss, makes synchronous multi-region replication overkill. Scheduled backups (e.g., every 15 minutes using Azure SQL Database automated backups with point-in-time restore) or asynchronous replication (e.g., Azure SQL Database active geo-replication with a recovery point objective of up to 5 seconds, but here we can tune it to meet 15 minutes) provide sufficient protection at a lower cost, avoiding the latency and expense of synchronous replication across regions.

Answer

Use synchronous replication across every Azure region.

Answer

Run the database on a single VM with no backups.

Answer

Use a public DNS CNAME only.

Question 11

A company wants to back up on-premises SQL Server databases to Azure and be able to restore them to an on-premises server in case of a disaster. The backup must be encrypted and retained for 7 years for compliance. Which Azure service should they use?

Accepted Answer

Azure Backup with the MARS agent.. Azure Backup with the MARS agent is the correct choice because it is specifically designed to back up on-premises SQL Server databases directly to Azure, supports encryption at rest using a passphrase, and allows long-term retention (up to 99 years) to meet the 7-year compliance requirement. The MARS agent performs file- and application-consistent backups and can restore data to an on-premises server, fulfilling the disaster recovery scenario.

Answer

Azure Site Recovery.

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Azure Database Migration Service.

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Azure Storage with incremental snapshots.

Question 12

A business-critical App Service application must survive a full regional outage. The recovery design should fail over automatically based on endpoint health and avoid DNS-cache delay where possible. Which service should front the regional deployments?

Accepted Answer

Azure Front Door. Azure Front Door is the correct choice because it provides global HTTP/HTTPS load balancing with automatic failover across regions based on real-time endpoint health probes. It uses Anycast routing to direct traffic to the nearest healthy region, which avoids DNS-cache delay inherent in DNS-based solutions like Traffic Manager. This ensures sub-second failover and meets the requirement for a business-critical app that must survive a full regional outage.

Answer

Azure Load Balancer

Answer

Azure Application Security Groups

Answer

Azure Traffic Manager only

Question 13

An Azure SQL Database supports a customer-facing application. The company requires automatic failover to a paired region with minimal administrative action. Which feature should be recommended?

Accepted Answer

Auto-failover group. Auto-failover groups in Azure SQL Database enable automatic, synchronous or asynchronous replication of databases to a paired region, with a built-in listener endpoint that handles transparent failover. This meets the requirement for minimal administrative action because failover can be triggered automatically based on the built-in grace period and health monitoring, without manual intervention.

Answer

Zone-redundant storage only

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SQL elastic pool only

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Azure Backup vault only

Question 14

A solution stores critical VM backups in Azure. The company wants protection against accidental or malicious deletion of backups. Which two controls should be included?

Accepted Answer

Soft delete for Azure Backup. Soft delete for Azure Backup (Option C) is correct because it retains backup data for an additional 14 days after deletion, allowing recovery from accidental or malicious deletion. This feature is enabled by default for Recovery Services vaults and protects backup data even if the backup itself is deleted, providing a critical safety net against data loss.

Answer

Disabling backup alerts

Answer

Storing all backups on the original VM disk

Question 15

Drag and drop the steps to configure an Azure Application Gateway with end-to-end TLS encryption into the correct order.