When provisioning an Azure Cosmos DB account, which feature provides redundancy within an Azure region?
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A. B. C. D.B
With Availability Zone (AZ) support, Azure Cosmos DB will ensure replicas are placed across multiple zones within a given region to provide high availability and resiliency to zonal failures.
Note: Azure Cosmos DB provides high availability in two primary ways. First, Azure Cosmos DB replicates data across regions configured within a Cosmos account. Second,
Azure Cosmos DB maintains 4 replicas of data within a region.
https://docs.microsoft.com/en-us/azure/cosmos-db/high-availabilityWhen provisioning an Azure Cosmos DB account, the feature that provides redundancy within an Azure region is Availability Zones.
Availability Zones are a high availability offering that protects your applications and data from datacenter-level failures. Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more datacenters equipped with independent power, cooling, and networking. Availability Zones are set up so that they are isolated from each other to avoid any single point of failure. This means that if there is an outage in one Availability Zone, your applications and data will still be available in the other Availability Zones.
Multi-master replication is a feature that allows you to read and write data to any region. It provides low latency and high availability for read and write operations, but it does not provide redundancy within a region.
The strong consistency level is a feature that ensures that all read operations receive the most recent write. It does not provide redundancy within a region.
Automatic failover is a feature that automatically switches the read and write operations to a secondary region in the event of a failure in the primary region. It does not provide redundancy within a region.
In conclusion, the correct answer to the question is B. Availability Zones.