AZ-305 Design business continuity solutions Practice Test 4 — 15 Questions

Question 1

Your company, Contoso Ltd., runs a critical line-of-business application on Azure Virtual Machines in the West Europe region. The application uses Azure SQL Database (Business Critical tier) for data storage. The compliance team requires a Recovery Point Objective (RPO) of 5 seconds and a Recovery Time Objective (RTO) of 10 seconds for the database tier. For the compute tier, the RPO is 1 minute and RTO is 5 minutes. The application must remain available during planned maintenance and regional outages. You have been asked to design the business continuity solution. You need to recommend the most cost-effective solution that meets all requirements. What should you recommend?

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

Accepted Answer

Set up auto-failover group for Azure SQL Database with a secondary in North Europe; deploy AKS in both regions with Azure Front Door for global load balancing.. Auto-failover groups for Azure SQL Database provide an RPO of 5 seconds and an RTO of 10 seconds, meeting the database requirements. Deploying AKS in both regions with Azure Front Door ensures global load balancing and automatic failover for the compute tier, satisfying the RPO of 1 minute and RTO of 5 minutes. This combination is the most cost-effective as it uses managed services without the overhead of manual scripts or additional infrastructure.

Answer

Configure active geo-replication for Azure SQL Database; deploy AKS in two regions with Azure Traffic Manager; use manual failover scripts.

Answer

Use Azure SQL Database backup with point-in-time restore for the database; deploy AKS in West Europe and use Azure Traffic Manager for failover to a secondary cluster in North Europe.

Answer

Deploy SQL Server Always On availability groups on Azure VMs in two regions; use Azure Site Recovery for the VMs; use Azure Front Door for load balancing.

Question 2

You are the Azure architect for a financial services company. The company runs a proprietary trading application on Azure Virtual Machines in the East US region. The application stores state in Azure Cache for Redis (Standard tier) and uses Azure SQL Database (General Purpose tier) for persistent data. The business has set a Recovery Point Objective (RPO) of 1 hour and a Recovery Time Objective (RTO) of 2 hours for the entire application. The solution must minimize costs. You have been asked to design a disaster recovery plan. Which approach should you recommend?

Accepted Answer

Use Azure Traffic Manager to distribute traffic to both regions with active-passive configuration. Configure Azure SQL Database auto-failover groups. Deploy a second Azure Cache for Redis in the secondary region.. Option A meets both RPO and RTO. Azure Site Recovery replicates VMs to a secondary region with near-synchronous RPO and RTO within minutes. Azure SQL Database auto-failover groups provide RPO of ~5 seconds and RTO of ~1 hour, satisfying the requirements. Deploying a second Azure Cache for Redis in the secondary region allows traffic to be switched quickly, avoiding the need to reconfigure the application during failover. Although this is more costly than using backups alone, it is the only option that meets the 2-hour RTO.

Answer

Configure Azure SQL Database active geo-replication with a readable secondary. Use Azure Site Recovery for VMs. Enable Azure Cache for Redis data persistence and replicate the cache using Azure Files.

Answer

Back up the VMs using Azure Backup with a 1-hour frequency. Use Azure SQL Database backup with short-term retention. Manually recreate the Redis cache in the secondary region.

Answer

Use Azure Site Recovery to replicate the VMs to a secondary region. For Azure SQL Database, enable geo-redundant backup storage and use geo-restore during failover. For Azure Cache for Redis, document the reconfiguration steps to point to a new cache in the secondary region.

Question 3

Contoso Ltd. runs a mission-critical application on Azure Virtual Machines in the East US region. The application uses Azure SQL Database (Business Critical tier) and stores files in Azure Blob Storage (hot tier). The business requires a Recovery Time Objective (RTO) of 15 minutes and a Recovery Point Objective (RPO) of 5 minutes for the application. For SQL Database, they need the ability to fail over to a secondary region with no data loss. For Blob Storage, they need to maintain read access to data even if the primary region fails. The solution must be cost-optimized and not exceed the RTO/RPO. Which combination of services should you recommend?

Accepted Answer

Configure Azure SQL Database active geo-replication with a secondary in a paired region, and use read-access geo-redundant storage (RA-GRS) for Blob Storage.. Active geo-replication for Azure SQL Database supports an RPO of 5 minutes with no data loss during failover to a secondary paired region, meeting the business-critical requirement. Read-access geo-redundant storage (RA-GRS) provides read access to data in the secondary region even if the primary fails, satisfying the Blob Storage requirement. This combination is cost-optimized as it avoids unnecessary services like Site Recovery for VMs, which are not required for the stated RTO/RPO.

Answer

Configure Azure SQL Database failover groups with automatic failover, and use geo-redundant storage (GRS) for Blob Storage.

Answer

Deploy Azure Site Recovery for VMs, configure Azure SQL Database failover groups, and use geo-zone-redundant storage (GZRS) for Blob Storage.

Answer

Configure Azure SQL Database geo-restore for the database, and use zone-redundant storage (ZRS) for Blob Storage.

Question 4

Contoso Ltd. runs a mission-critical application on Azure VMs in the West US region. They require an RPO of 15 minutes and an RTO of 1 hour in case of a regional disaster. They plan to use Azure Site Recovery. The application stores data on managed disks and uses a Premium SSD v2 disk for the database. The application also uses Azure SQL Database for some transactional data. What should Contoso do to meet the recovery objectives for the entire solution?

Accepted Answer

Configure Azure Site Recovery for the VMs with Premium SSD v2 disks and configure active geo-replication with auto-failover groups for Azure SQL Database.. Azure Site Recovery (ASR) supports Premium SSD v2 disks for VM replication, enabling an RPO of 15 minutes and RTO of 1 hour for the VMs. For Azure SQL Database, active geo-replication with auto-failover groups provides a regional disaster recovery solution with an RPO of seconds and RTO of about 1 hour, meeting the stated objectives. This combination covers both the managed disk data and the transactional data in Azure SQL Database.

Answer

Use Azure Backup for the VMs and configure long-term retention for the Azure SQL Database backups.

Answer

Configure Azure Site Recovery for the VMs and also for the Azure SQL Database by adding it to the replication group.

Answer

Deploy the application across two Azure regions using Azure Front Door and active geo-replication for Azure SQL Database.

Question 5

Your company is designing a disaster recovery solution for a three-tier application hosted on Azure VMs. The solution must meet the following requirements:
- RPO: 1 hour
- RTO: 4 hours
- Automated failover to a secondary region
- Cost optimization is a priority
Which TWO actions should you include in the design?

Accepted Answer

Deploy an Azure Load Balancer in the secondary region with health probes to automatically route traffic after failover.. Options A and E are correct. Azure Site Recovery (E) provides replication and automated failover for VMs to a secondary region, meeting the RPO of 1 hour and RTO of 4 hours. Deploying an Azure Load Balancer (A) with health probes in the secondary region allows automatic traffic routing after failover, supporting cost optimization by using the same load balancer for both regions. Option B is wrong because Azure Backup is not designed for automated failover and has higher RTO than required. Option C is wrong because read-only replicas using Availability Zones are for high availability within a region, not for cross-region failover, and cannot be used for write workloads. Option D is wrong because Azure Front Door is for global load balancing and application acceleration, not for regional VM failover; it would not meet the automated failover requirement for the three-tier application.

Answer

Use Azure Backup to take hourly backups of the VMs and restore them in the secondary region.

Answer

Configure a read-only replica of the application tier in the secondary region using Availability Zones.

Answer

Deploy Azure Front Door with a backend pool containing both primary and secondary regions.

Question 6

A company runs a three-tier web application on Azure virtual machines in the East US region. The database tier uses SQL Server on Azure VMs with Always On availability groups. The company wants a disaster recovery solution that provides a recovery point objective (RPO) of 5 minutes and a recovery time objective (RTO) of 1 hour for the database tier. The solution must minimize administrative effort and cost. What should you recommend?

Accepted Answer

Extend the existing Always On availability group to a SQL Server VM in West US.. Extending the Always On availability group to a secondary region is the most appropriate solution because it leverages existing SQL Server high-availability features, provides asynchronous replication with a low RPO, and supports relatively fast failover. It meets the RPO and RTO requirements while minimizing additional administrative overhead and cost compared to other options.

Answer

Configure Azure Site Recovery to replicate the database VMs to West US.

Answer

Configure log shipping from the primary SQL Server to a secondary SQL Server in West US.

Answer

Use Azure SQL Database active geo-replication for the database tier.

Question 7

A company uses Azure Blob Storage to store critical documents. The storage account is in the East US region and uses the Hot access tier. The company requires a disaster recovery solution that provides read access to the data in a secondary region within 15 minutes of a regional outage. The solution must minimize cost and administrative effort. What should you recommend?

Accepted Answer

Use Azure Storage account failover with a customer-managed failover to the secondary region.. A customer-managed failover for a geo-redundant storage account allows the company to initiate failover to the secondary region, achieving read access within 15 minutes. This approach minimizes cost because the storage account uses GRS, which is cheaper than RA-GRS, and the failover is a one-time operation during a disaster.

Answer

Configure the storage account as read-access geo-zone-redundant storage (RA-GZRS).

Answer

Configure the storage account as read-access geo-redundant storage (RA-GRS).

Answer

Configure the storage account as geo-redundant storage (GRS) and initiate a customer-managed failover.

Question 8

A company is designing a business continuity solution for an Azure Kubernetes Service (AKS) cluster that runs a stateful application. The application uses Azure Disks for persistent storage. The company requires a recovery point objective (RPO) of 15 minutes and a recovery time objective (RTO) of 30 minutes. The solution must minimize data loss and administrative effort. Which two actions should you include in the design? (Choose two.)

Accepted Answer

Configure Azure Backup for AKS to back up the cluster and persistent volumes.. Configuring Azure Backup for AKS and deploying a second AKS cluster in a paired region with Azure Traffic Manager are the two actions that address both data protection and failover. Azure Backup provides a managed backup solution for persistent volumes, while the secondary cluster and Traffic Manager enable rapid failover, meeting the RPO and RTO requirements.

Answer

Configure geo-replication for Azure Disks used by the AKS cluster.

Answer

Use Azure Container Registry geo-replication to replicate container images to a secondary region.

Answer

Use Azure Site Recovery to replicate the AKS nodes to a secondary region.

Question 9

A financial services company runs a critical SQL Server database on Azure Virtual Machines. They require a disaster recovery solution with an RPO of less than 15 seconds and an RTO of less than 1 hour. Which technology should they implement?

Accepted Answer

SQL Server Always On Availability Groups. SQL Server Always On Availability Groups provide synchronous data replication at the database level, enabling an RPO of less than 15 seconds by committing transactions on both primary and secondary replicas simultaneously. With automatic failover and a secondary replica in a different Azure region, the RTO can be under 1 hour, meeting the critical requirements for a SQL Server workload on Azure VMs.

Answer

Azure Site Recovery

Answer

Azure Backup for SQL Server

Answer

Geo-redundant backups

Question 10

A company runs a critical SQL Server database on Azure Virtual Machines in a single region. They need a disaster recovery solution across regions with a recovery point objective (RPO) of zero. The database is update-intensive with frequent writes. Which configuration should they implement?

Accepted Answer

SQL Server Always On Availability Group with synchronous commit across regions.. SQL Server Always On Availability Group with synchronous commit across regions ensures zero data loss because transactions are committed on both the primary and secondary replicas before the primary acknowledges the commit. This meets the RPO of zero, even though it introduces latency due to cross-region synchronization. For an update-intensive workload, synchronous commit is the only option that guarantees no data loss at the cost of increased write latency.

Answer

SQL Server Always On Availability Group with asynchronous commit.

Answer

Azure Site Recovery to another region.

Answer

Deploy the VMs in a different availability zone within the same region.

Question 11

A company runs a critical application on Azure Virtual Machines in a single availability set. They want to protect against an entire Azure region failure. They need a recovery time objective (RTO) of 30 minutes and a recovery point objective (RPO) of 15 minutes. Which solution should they use?

Accepted Answer

Azure Site Recovery to another region.. Azure Site Recovery (ASR) provides orchestrated replication, failover, and failback of Azure VMs to a secondary region, enabling a recovery time objective (RTO) of 30 minutes and a recovery point objective (RPO) of 15 minutes as required. ASR replicates VM disks continuously to the target region, and in a regional failure, you can initiate a planned or unplanned failover to bring up the application within the specified RTO/RPO. This is the only option that offers both cross-region disaster recovery and the granular recovery objectives stated.

Answer

Azure Backup for VMs with geo-redundant backup storage.

Answer

Deploy VMs in an availability zone within the same region.

Answer

Use Azure managed disks with geo-replication (LRS to GRS).

Question 12

A company runs multiple on-premises workloads that are critical. They need a disaster recovery solution that can replicate workloads to Azure and enable failover in the event of an on-premises outage. The solution must support non-VMware and non-Hyper-V physical servers. Which Azure service should they use?

Accepted Answer

Azure Site Recovery. Azure Site Recovery (ASR) is the correct service because it provides orchestrated replication and failover for on-premises physical servers (including non-VMware, non-Hyper-V) to Azure. It supports physical-to-Azure (P2A) replication using the Mobility service installed on the source server, enabling automated failover during an outage. This directly meets the requirement for critical workload disaster recovery with failover capability.

Answer

Azure Backup

Answer

Azure Migrate

Answer

Azure Disaster Recovery

Question 13

A company has several Azure Virtual Machines running Windows Server with critical applications. They need to back up these VMs to a secondary Azure region to protect against regional disasters. The backup must be application-consistent and support file-level restore. Which solution should they implement?

Accepted Answer

Azure Backup with geo-redundant storage (GRS) in a Recovery Services vault. Azure Backup with geo-redundant storage (GRS) in a Recovery Services vault is the correct solution because it provides application-consistent backups of Windows Server VMs using the Volume Shadow Copy Service (VSS) to ensure data integrity, and it supports file-level restore by allowing you to mount the backup as a drive to recover individual files. The GRS option replicates backup data to a paired secondary region, meeting the disaster recovery requirement without additional manual steps.

Answer

Azure Site Recovery

Answer

Azure Snapshot of managed disks stored in a different region

Answer

Azure Managed Disk with incremental snapshots and manual cross-region copy

Question 14

A company runs a SQL Server database on an Azure VM in West Europe. They need to back up the database daily and retain backups for 7 years for compliance. They also require the ability to restore the database to a secondary Azure region (North Europe) if the primary region fails. They want to minimize operational overhead and costs. Which Azure Backup configuration should they use?

Accepted Answer

A. Azure Backup's built-in cross-region restore (CRR) for Azure VMs allows you to restore SQL Server databases hosted on Azure VMs to a paired secondary region (North Europe) in the event of a disaster, while retaining backups for up to 10 years (covering the 7-year compliance requirement). This configuration minimizes operational overhead by using Azure Backup's native policy-based scheduling and storage management, and it is cost-effective as it uses geo-redundant storage (GRS) for the Recovery Services vault without needing a separate backup infrastructure.

Answer

B

Answer

C

Answer

D

Question 15

A company runs a stateless web application on Azure VMs. They need to ensure the application remains available in the event of an entire Azure datacenter failure. They want to achieve a 99.99% SLA. Which deployment option should they recommend?

Accepted Answer

B. To survive an entire Azure datacenter failure and achieve a 99.99% SLA, the stateless web application must be deployed across at least two Azure Availability Zones within a region. Availability Zones are physically separate datacenters within the same region, each with independent power, cooling, and networking. Deploying VMs in a zone-redundant configuration ensures that if one datacenter fails, the application continues running in another zone, meeting the 99.99% SLA (which requires a minimum of two zones).

Answer

A

Answer

C

Answer

D