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Exam AZ-204 topic 8 question 2 discussion

Actual exam question from Microsoft's AZ-204

Question #: 2
Topic #: 8

DRAG DROP -
You need to ensure disaster recovery requirements are met.
What code should you add at line PC16?
To answer, drag the appropriate code fragments to the correct locations. Each code fragment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:

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Suggested Answer:

by rdemontis at March 18, 2021, 2:22 p.m.

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rdemontis

Highly Voted 4 years, 3 months ago

Answers in box 1 and 2 arent' correct. They should be SingleTranferConext and ShouldOverwriteCallbackAsync because we are copying a single blob (see CopyAsync method). We are inside a foreach loop that scan each file in the share.

upvoted 62 times

ray01

4 years, 2 months ago

Correct 1. https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.storage.datamovement.singletransfercontext?view=azure-dotnet 2. According to a link above, there is only "ShouldOverwriteCallbackAsync" available for "SingleTranferConext " 3. https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.storage.datamovement.transfermanager.copyasync?view=azure-dotnet#Microsoft_Azure_Storage_DataMovement_TransferManager_CopyAsync_Microsoft_Azure_Storage_Blob_CloudBlob_Microsoft_Azure_Storage_Blob_CloudBlob_System_Boolean_Microsoft_Azure_Storage_DataMovement_CopyOptions_Microsoft_Azure_Storage_DataMovement_SingleTransferContext_ The question is should it be server side copy or not? I would say "true".

upvoted 11 times

overhill

7 months ago

incorrect Directory also has it

upvoted 1 times

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d0bermannn

3 years, 9 months ago

yes, foreach construction applied

upvoted 2 times

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clarionprogrammer

Highly Voted 4 years, 2 months ago

SingleTranferConext ShouldOverwriteCallbackAsync true

upvoted 30 times

ZodiaC

3 years, 10 months ago

ITS FALSE 10000000000%

upvoted 3 times

ZodiaC

3 years, 10 months ago

Srry im didnt read well

upvoted 8 times

NombreFalso

2 years, 3 months ago

It's all good buddy

upvoted 2 times

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anastakasim

4 years, 2 months ago

The last box is "true"? really?

upvoted 2 times

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4bd3116

Most Recent 9 months, 1 week ago

var context = new SingleTransferContext { ShouldOverwriteCallbackAsync = (source, destination) => Task.FromResult(true) }; await TransferManager.CopyAsync(blob, GetDRBlob(blob), isServiceCopy: true, context: context, options: new CopyOptions());

upvoted 2 times

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[Removed]

1 year, 12 months ago

About isServiceCopy: A flag indicating whether the copy is service-side asynchronous copy or not. If this flag is set to true, service-side asychronous copy will be used; if this flag is set to false, file is downloaded from source first, then uploaded to destination.

upvoted 4 times

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Kluk_Kluk

2 years, 3 months ago

https://learn.microsoft.com/en-us/azure/storage/common/storage-use-data-movement-library#track-transfer-progress

upvoted 1 times

Kluk_Kluk

2 years, 3 months ago

"To achieve this scenario, we need to create a TransferContext object. The TransferContext object comes in two forms: SingleTransferContext and DirectoryTransferContext. The former is for transferring a single file and the latter is for transferring a directory of files."

upvoted 1 times

Kluk_Kluk

2 years, 3 months ago

the foreach in the lines above PC16 indicates single file transfer

upvoted 4 times

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OPT_001122

2 years, 6 months ago

1.SingleTranferConext 2.ShouldOverwriteCallbackAsync 3.true (If this flag is set to true, service-side asychronous copy will be used)

upvoted 3 times

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coffecold

2 years, 8 months ago

Old version 11 code Microsoft.Azure.Storage.DataMovement Version 12 : Azure.Storage.Blobs You would probably use : StartCopyFromUriAsync(Uri, BlobCopyFromUriOptions, CancellationToken)

upvoted 2 times

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gmishra88

2 years, 8 months ago

For the non Microsoft stable tied horses, Task.FromResult(true) creates a task that returns true.

upvoted 6 times

coffecold

2 years, 8 months ago

usage : See https://github.com/Azure/azure-storage-net-data-movement/blob/master/samples/DataMovementSamples/DataMovementSamples/Samples.cs

upvoted 1 times

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gmishra88

2 years, 8 months ago

Also Microsoft, you do not need to know .Net to be able to write AZ-204.

upvoted 3 times

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SivajiTheBoss

3 years, 3 months ago

Correct Answer: 1.SingleTranferConext (because it is inside loop) 2.ShouldOverwriteCallbackAsync (for singleTransferContext this is only option) 3.true (If this flag is set to true, service-side asychronous copy will be used)

upvoted 6 times

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leonidn

3 years, 4 months ago

SingleTransferContext because we transfer blob by blob because line PC16 is in the ForEach. IsServiceCopy true to allow service side asynchronous processing instead of downloading/uploading blobs. ShouldOverwriteCallbackAsync because ShouldTransferCallbackAsync is not a property of SingleTransferContext.

upvoted 4 times

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asdasdasg2

3 years, 5 months ago

No one is talking about how the line on the first answer box is invalid no matter that answer you put. I believe it's a copy paste error and the line should be: var context = new [ ]; with answer SingleTransferContext

upvoted 2 times

asdasdasg2

3 years, 5 months ago

i realize that is confusing, i meant that the line in the hot area should be : var context = new ____ ();

upvoted 2 times

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BrettusMaximus

4 years, 1 month ago

isServiceCopy: True Boolean A flag indicating whether the copy is service-side asynchronous copy or not. If this flag is set to true, service-side asychronous copy will be used; if this flag is set to false, file is downloaded from source first, then uploaded to destination

upvoted 2 times

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