Examkin

Question

Difficulty: HardAzure Regions, Availability Zones, and Region Pairs

An organization plans to deploy a multi-tier banking application in Azure. To meet strict regulatory requirements, the primary application components must be hosted in the East US region. The deployment must survive the failure of an entire datacenter facility within East US. Additionally, to protect against a large-scale regional catastrophe, database backups must be replicated to a geographical location at least 300 miles away. The administrator creates a resource group in the East US region to manage the application resources. Based on these requirements, which configuration should the organization implement?

  1. Deploy the virtual machines across multiple Availability Zones in East US, replicate the backups to the West US region pair, and place all resources in the East US resource group.Answer
  2. B
    Deploy the virtual machines in a single datacenter in East US, rely on the West US region pair to protect against local datacenter power outages, and place all resources in the East US resource group.
  3. C
    Deploy the virtual machines across Availability Zones that span across both the East US and West US regions, and place all resources in the East US resource group.
  4. D
    Deploy the virtual machines across multiple Availability Zones in East US, replicate the backups to West US, and create a separate resource group in West US because resources must reside in the same region as their containing resource group.

Answer

Deploy the virtual machines across multiple Availability Zones in East US, replicate the backups to the West US region pair, and place all resources in the East US resource group.
The correct architecture uses Availability Zones in the primary East US region to protect against local datacenter failures (providing high availability). For regional disaster recovery, it uses the West US region pair (which is at least 300 miles away). Additionally, resources can be deployed to West US while being managed under the existing East US resource group, because resource groups do not restrict the location of the resources they contain.

Step-by-Step Solution

1
Determine the high availability requirement within the primary region.
Deploying the virtual machines across multiple Availability Zones in East US ensures the application remains online even if a single datacenter facility fails.
Availability Zones are physically separate datacenters within an Azure region, each with independent power, cooling, and networking.
2
Determine the disaster recovery replication target.
Replicate backups to the West US region pair.
Azure region pairs are geographically separated by at least 300 miles to protect against regional catastrophes while maintaining data residency.
3
Determine the resource group placement rules.
Keep all resources, including those replicated to West US, in the East US resource group.
A resource group only stores metadata and does not restrict the deployment regions of the resources it contains.

Key Concept

Azure Regions, Availability Zones, and Region Pairs
Rate this question

Topics

Azure Regions, Availability Zones, and Region Pairs

More questions from this topic