AZ-305 Design business continuity solutions Practice Test 11 — 15 Questions

Question 1

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 2

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 3

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. Azure Cosmos DB does not support strong consistency when multiple write regions are enabled. The supported consistency levels for multi-region writes are Eventual, Session, and Bounded staleness. None of these guarantees zero data loss during a regional failure, because writes that have not yet been replicated to the surviving region can be lost. Bounded staleness limits how far the data can lag behind, but it does not eliminate data loss. To meet a strict no-data-loss requirement, you must use a single write region with strong consistency (or another architecture that ensures synchronous replication before acknowledging writes). Therefore, the requirement as stated cannot be satisfied by any of the listed consistency levels in a multi-write-region configuration.

Answer

Strong

Answer

Eventual

Answer

Session

Question 4

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 5

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 6

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 7

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 8

Refer to the exhibit. You deploy an Azure SQL Database with a secondary replica in another region using the ARM template shown. You need to ensure that the database can fail over automatically with zero data loss. What is missing?

Accepted Answer

Create a failover group that includes both databases.. A failover group is required to enable automatic failover between the primary and secondary replicas in Azure SQL Database. Without a failover group, the secondary replica exists as a readable copy but cannot automatically take over during a disaster. The failover group also supports the ability to achieve zero data loss by using the 'GracePeriodWithDataLoss' setting or by ensuring synchronous replication is configured, which is part of the failover group's properties.

Answer

Configure long-term backup retention.

Answer

Disable readScaleOut on the primary database.

Answer

Set zoneRedundant to true on the primary database.

Question 9

A multinational company runs a mission-critical application on Azure VMs in the West US region. The application uses Azure SQL Database (Business Critical tier) and Azure Cache for Redis. The company needs to ensure the application can fail over to a secondary region within 5 minutes during a regional outage. The design must minimize data loss. Which solution should you recommend?

Accepted Answer

Deploy VMs in an Azure Site Recovery recovery plan to East US, use Azure SQL Database active geo-replication with auto-failover group, and use Azure Cache for Redis with geo-replication enabled.. It ensures all components can fail over to East US within 5 minutes with minimal data loss. Azure Site Recovery (ASR) provides orchestrated VM replication with RTO typically under 5 minutes. Azure SQL Database active geo-replication with auto-failover groups offers RPO of 5 seconds and RTO of ~1 minute, meeting the 5-minute target and minimizing data loss. Azure Cache for Redis geo-replication (Premium tier) replicates cache data asynchronously, providing a warm standby cache in East US to reduce data loss. Option A fails because availability zones do not protect against a regional outage and geo-restore has longer RTO. Option B uses availability sets (no regional protection) and manual failover for SQL (exceeds 5 minutes). Option C uses Standard tier Redis which lacks geo-replication, leading to data loss.

Answer

Deploy VMs across Azure availability zones in West US, use Azure SQL Database geo-restore to East US, and deploy a second Azure Cache for Redis instance in East US.

Answer

Deploy VMs in an availability set in West US, use Azure Site Recovery to replicate to East US, and configure Azure SQL Database failover group with manual failover.

Answer

Deploy VMs in an Azure Site Recovery recovery plan to East US, use Azure SQL Database active geo-replication with auto-failover group, and deploy Azure Cache for Redis Standard tier in East US.

Question 10

Your company runs a web application on Azure App Service (Standard tier) in a single region. You need to design a disaster recovery solution that can fail over to another region within 30 minutes. The application uses Azure SQL Database (General Purpose tier) and Azure Blob Storage. What should you implement?

Accepted Answer

Configure App Service backup to a secondary region, use Azure SQL Database active geo-replication with auto-failover group, and use geo-redundant storage (GRS) for Blob Storage.. It meets the 30-minute RTO by using Azure SQL Database active geo-replication with auto-failover groups, which provides automated, rapid failover to a secondary region. App Service backup to a secondary region ensures the web app can be restored quickly, and geo-redundant storage (GRS) for Blob Storage provides durable replication across regions, enabling failover within the required time frame.

Answer

Use Azure Traffic Manager with priority routing to a second App Service instance, use Azure SQL Database backup to a secondary region, and use Azure Storage zone-redundant storage (ZRS).

Answer

Configure App Service auto-scaling, use Azure SQL Database geo-replication with readable secondary, and use Azure Storage read-access geo-redundant storage (RA-GRS).

Answer

Configure App Service deployment slots, use Azure SQL Database geo-restore, and use Azure Storage locally-redundant storage (LRS).

Question 11

A retail company runs its e-commerce platform on Azure VMs. The application uses Azure SQL Database. You are designing a business continuity plan. The company wants to minimize recovery time for a regional outage. Which Azure service should you use to replicate the VMs to a secondary region?

Accepted Answer

Azure Site Recovery. Azure Site Recovery (ASR) orchestrates replication, failover, and failback of Azure VMs from a primary to a secondary region, enabling rapid recovery during a regional outage. It provides continuous replication with a recovery point objective (RPO) of seconds and a recovery time objective (RTO) of minutes, directly meeting the requirement to minimize recovery time for the e-commerce platform's VMs.

Answer

Azure Traffic Manager

Answer

Azure Backup

Answer

Azure Load Balancer

Question 12

Your organization has a hybrid identity infrastructure using Microsoft Entra ID (formerly Azure AD) and Active Directory Domain Services (AD DS) on-premises. You plan to deploy a critical application on Azure VMs that must remain available even if the on-premises network connection fails. The application authenticates users via on-premises AD DS. You need to design an identity disaster recovery solution that works during a network outage. What should you implement?

Accepted Answer

Deploy Microsoft Entra Domain Services and join the Azure VMs to the managed domain.. Microsoft Entra Domain Services provides a managed domain that is synchronized from your on-premises AD DS via Microsoft Entra Connect. By joining the Azure VMs to this managed domain, the application can authenticate users against the managed domain even when the on-premises network connection fails, ensuring local authentication within Azure without dependency on the on-premises AD DS.

Answer

Create a site-to-site VPN connection with a secondary on-premises data center.

Answer

Configure Azure AD Connect with password hash synchronization and enable seamless single sign-on.

Answer

Use Azure AD Application Proxy to publish the application and authenticate via Azure AD.

Question 13

A company runs a file server on Azure VMs using Windows Server. The server stores business-critical documents. You need to design a backup strategy that meets a recovery point objective (RPO) of 1 hour and recovery time objective (RTO) of 4 hours. The solution must be cost-effective. Which backup solution should you use?

Accepted Answer

Azure Backup for Azure VMs. Azure Backup for Azure VMs provides application-consistent backups for Windows Server VMs, supporting RPOs as low as 1 hour with frequent backup policies and RTOs within 4 hours by restoring to a new VM or using instant restore. It is cost-effective because it uses incremental backups and only charges for storage consumed, without the replication overhead of Site Recovery.

Answer

Azure Site Recovery

Answer

Azure Backup for Azure Blobs

Answer

Azure File Sync

Question 14

You are designing a disaster recovery plan for a web application hosted on Azure App Service. The application uses Azure SQL Database. The company wants to minimize downtime during a regional outage. Which approach should you recommend?

Accepted Answer

Deploy App Service in two regions with Azure Front Door for global load balancing and Azure SQL Database active geo-replication.. It combines multi-region App Service deployment with Azure Front Door for global load balancing and Azure SQL Database active geo-replication. This ensures that during a regional outage, traffic is automatically routed to the healthy secondary region, and the database is continuously replicated with a readable secondary, enabling near-zero RPO and minimal RTO without manual intervention.

Answer

Deploy App Service in a single region with Azure Backup for the app and database.

Answer

Deploy App Service across availability zones in one region and use Azure SQL Database zone-redundant configuration.

Answer

Deploy App Service in two regions with Azure Traffic Manager and use manual database restore.

Question 15

Which THREE of the following are required components for a disaster recovery solution using Azure Site Recovery for on-premises Hyper-V VMs?

Accepted Answer

A Recovery Services vault in the target Azure region.. A Recovery Services vault in the target Azure region is required because it serves as the central management and storage container for replication data, configuration settings, and recovery points. Azure Site Recovery (ASR) uses this vault to orchestrate replication, failover, and failback for on-premises Hyper-V VMs to Azure. Without a vault in the target region, there is no destination to store replicated data or manage the recovery process.

Answer

Azure Backup Server installed on-premises.

Answer

An ExpressRoute connection from on-premises to Azure.