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Azure Global Infrastructure

Regions

  • Each region has more than one data center, which is a physical location.
  • A group of data centers deployed in a latency-defined perimeter and connected through a dedicated regional low latency network.
  • Criteria in choosing a Region:
    • Location – a region closest to your users minimizes the latency
    • Features – some features are not available in all regions
    • Price – the price of services vary from region to region
  • Each Region is paired within the same geographic area
  • If the primary region has an outage, you can failover to the secondary region
  • You can use paired regions for replication
  • Regions that are unique when it comes to compliance:
    • Azure Government Cloud – only US federal, state, local, and tribal governments and their partners have access to this dedicated instance
    • China Region – data center is physically located within China and has no connection outside of China, including other Azure regions

Availability Zones

  • Each availability zone is a physical location within a region
  • A zone is composed of one or more data centers with independent power, cooling, and networking facilities.
  • Azure services that support Availability Zones fall into two categories:
    • Zonal services – a resource is pinned to a specific zone
    • Zone-redundant services – replicates automatically across zones
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Resource Groups

  • A container that holds related resources
  • Each resource can only exist in a single resource group
  • You can add or remove resources to any resource group at any time
  • Allows you to move a resource from one resource group to another
  • Resources from multiple regions can be in one resource group
  • You can give users access to a resource group
  • Resources can interact with other resources in different resource groups
  • A resource group has a location, or region, as it stores metadata about the resources

Azure Resource Manager (ARM)

  • A management layer allowing you to create, update and delete resources within your account.
  • You can deploy, manage, and monitor resources as a group
  • Resource Manager template is mainly used to deploy the resources consistently and repeatedly.
  • Define the dependencies between resources so they’re deployed in the correct order.
  • Tag resources to logically organize all the resources in your subscription.
  • You can check the costs for a group of resources sharing the same tag.

Azure Site Recovery

  • Azure’s disaster recovery as a service (DRaaS)
  • You can minimize recovery issues by sequencing the order of multi-tier applications that run on several virtual machines.
  • Keep applications available from on-premises to Azure or Azure to another Azure region during outages with automatic recovery.

How Does Microsoft Azure Work?

Validate Your Knowledge

Question 1

Question Type: Hotspot

For each of the following items, choose Yes if the statement is true or choose No if the statement is false. Take note that each correct item is worth one point.

Correct Answer: Yes – Yes – No

A Region is a set of data centers deployed within a latency-defined perimeter and connected through a dedicated regional low-latency network. Azure gives you the flexibility to deploy applications where you need to and can be done across multiple regions to deliver cross-region resiliency.

An Availability Zone is a high-availability offering that protects your applications and data from datacenter failures. Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more data centers equipped with independent power, cooling, and networking. To ensure resiliency, there’s a minimum of three separate zones in all enabled regions. The physical separation of Availability Zones within a region protects applications and data from datacenter failures. Zone-redundant services replicate your applications and data across Availability Zones to protect from single-points-of-failure.

The data moving in and out of Azure data centers, as well as data moving between Azure datacenters, is called bandwidth.

Remember these concepts regarding data transfer:

– Data transfer to Azure is always free

– Data transfer between Availability Zones is free

– Data transfer within the same Availability Zone is free

– Data transfer between Azure regions and to other continents is not free

Therefore, the following statements are true:

– Data transfer to Azure is free.

– Data transfer between Availability Zones is free.

The statement that says: Data transfer between Azure regions is free is incorrect because you are charged for data that moves between Azure regions.

References:
https://docs.microsoft.com/en-us/azure/availability-zones/az-overview
https://azure.microsoft.com/en-us/pricing/details/bandwidth/

Note: This question was extracted from our AZ-900 Microsoft Azure Fundamentals Practice Exams.

For more Azure practice exam questions with detailed explanations, check out the Tutorials Dojo Portal:

Microsoft Azure Practice Exams Tutorials Dojo

Sources:
https://docs.microsoft.com/en-us/learn/modules/explore-azure-infrastructure/
https://docs.microsoft.com/en-us/azure/availability-zones/az-overview
https://azure.microsoft.com/en-us/global-infrastructure/government/
https://docs.microsoft.com/en-us/azure/china/overview-operations
https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/overview
https://azure.microsoft.com/en-us/services/site-recovery/

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