Azure DNS and Azure Stack Hub DNS varies in terms of ways how they handle tags, Etags, metadata, and Limits along with some other key differences.Which of the following is used by the Azure Stack Hub DNS for safely handling the concurrent changes or modifications to the same resource?
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A. B. C. D.Correct Answer: B
Etags are used by Azure Stack Hub DNS for safely handling the concurrent changes or modifications to the same resource.
There is an Etag associated with every DNS resource (record set or Zone) and when a resource is updated, it regenerates the Etag.
The mismatch of Etag shows the occurrence of a concurrent change.
Option A is incorrect.
These are Etags, not tags, that are used by Azure Stack Hub DNS for safely handling the concurrent changes or modifications to the same resource.
Option B is correct.
Etags are used by Azure Stack Hub DNS for safely handling the concurrent changes or modifications to the same resource.
Option C is incorrect.
Metadata helps in recording the purpose of every record set.
These are Etags, not Metadata, that is used by Azure Stack Hub DNS for safely handling the concurrent changes or modifications to the same resource.
Option D is incorrect.
Etags, not limits are used by Azure Stack Hub DNS for safely handling the concurrent changes or modifications to the same resource.
To know more about DNS in Azure Stack Hub, please visit the below-given link:
Azure Stack Hub DNS uses Etags for safely handling concurrent changes or modifications to the same resource.
Etags (entity tags) are HTTP headers that provide a mechanism for versioning a resource in a way that can be used to ensure that changes to the resource are performed in a safe manner, without causing conflicts or overwriting changes made by other users. Essentially, an Etag is a unique identifier that represents the version of a resource, and it changes every time the resource is modified.
When a client makes a request to modify a resource, it includes the current Etag value in the request header. The server checks the Etag value against the current version of the resource. If the Etag values match, the server allows the modification to proceed. If the Etag values do not match, the server returns an HTTP 412 Precondition Failed status code, indicating that the resource has been modified by another user since the client last retrieved it.
By using Etags, Azure Stack Hub DNS can ensure that changes to DNS resources are made in a safe and controlled manner, preventing conflicts and data loss caused by concurrent modifications to the same resource. This makes it possible to manage DNS resources more effectively and efficiently in a hybrid cloud environment.