You need to identify the type of failure for which an Azure Availability Zone can be used to protect access to Azure services. What should you identify?
It seems that in these questions designed by Microsoft it always follows this thinking pattern:
Regions > Zones > Data Centre.
When you see a question like this with the keyword Zone AUTOMATICALLY you think protecting or managing data centers!
Availability Zones is a high-availability offering that protects your applications and data from datacenter failures.
https://docs.microsoft.com/en-us/azure/availability-zones/az-overview
The correct answer is:
D. an Azure data center failure
Explanation: An Azure Availability Zone is designed to protect against the failure of an entire data center. It provides high availability by distributing resources across physically separate locations within the same Azure region. If one data center experiences a failure, the resources in other availability zones within the region remain operational, ensuring minimal downtime.
The other options do not align with the purpose of availability zones:
A. a physical server failure: This is typically handled by Azure's redundancy within a single data center, not availability zones.
B. an Azure region failure: Availability zones are within a region, so they do not protect against the failure of an entire region. Regional failures are addressed through geo-redundancy.
C. a storage failure: This is usually managed by replication within Azure's storage services.
I agree. The correct answer is D - an Azure data center failure.
Azure Availability Zones are designed to protect applications and data from datacenter failures within an Azure region. Each Availability Zone is a unique physical location within an Azure region, and they are designed to ensure high availability by being isolated from each other to prevent single points of failure.
Region > Zones > Datacenter > server > storage
so, the only thing which will lead us to change from Zone to another Zone is a failure in Datacenter, "logic thinking" :)
D is correct, but using Availability Zone will protect from a physical server failure or a storage failure too - as It's replicating itself into different availability zones. So, It's A, C, D in my opinion.
Nope, in some specific Zones, we could have 1 or more Data Centers.
See Availability Zones section on : https://www.youtube.com/watch?v=C-
nNw1mGwzE&ab_channel=AdamMarczak-AzureforEveryone
think in availability zone like a phisical data center in Azure. Each Region may have from one to three AZ. Pay attetion, MAY have, some times just one AZ per Region.
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