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Exam AZ-305 topic 2 question 4 discussion

Actual exam question from Microsoft's AZ-305
Question #: 4
Topic #: 2
[All AZ-305 Questions]

HOTSPOT -
You need to design a storage solution for an app that will store large amounts of frequently used data. The solution must meet the following requirements:
✑ Maximize data throughput.
✑ Prevent the modification of data for one year.
✑ Minimize latency for read and write operations.
Which Azure Storage account type and storage service should you recommend? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

Show Suggested Answer Hide Answer
Suggested Answer:
Box 1: BlockBlobStorage -
Block Blob is a premium storage account type for block blobs and append blobs. Recommended for scenarios with high transactions rates, or scenarios that use smaller objects or require consistently low storage latency.

Box 2: Blob -
The Archive tier is an offline tier for storing blob data that is rarely accessed. The Archive tier offers the lowest storage costs, but higher data retrieval costs and latency compared to the online tiers (Hot and Cool). Data must remain in the Archive tier for at least 180 days or be subject to an early deletion charge.
Reference:
https://docs.microsoft.com/en-us/azure/storage/blobs/archive-blob

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albertozgz
Highly Voted 2 years, 11 months ago
The solution is CORRECT, because BlockBlobStorage provide a very low latency(x40) (Read and Write) and Throughput (x5) BECAUSE: One big file is splitted in "blobs" that are processed in parallel (for read and write) https://azure.microsoft.com/en-us/blog/premium-block-blob-storage-a-new-level-of-performance/
upvoted 61 times
Asten
1 year, 10 months ago
Yes. the key word is maximize data throughput
upvoted 4 times
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FrancisFerreira
Highly Voted 2 years, 8 months ago
Correct answer, but given reasoning for Archive Tier is wrong. You achieve the immutability requirement through a Time-Based Retention Policy at the container-level. That will prevent write and delete operations for all blobs in the container for a given period (in this case, 1 year).
upvoted 36 times
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SeMo0o0o0o
Most Recent 3 weeks, 3 days ago
CORRECT
upvoted 1 times
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23169fd
5 months, 2 weeks ago
The given answer is correct. BlockBlobStorage is the optimal storage account type because it is designed to handle large-scale, high-throughput operations and supports features that prevent data modification. Blob storage service is the right choice for storing large amounts of unstructured data and minimizing latency.
upvoted 1 times
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Lazylinux
7 months, 1 week ago
Given answer is correct
upvoted 1 times
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randy0077
1 year, 1 month ago
correct ans: Azure StorageV2 with Premium performance(immutable storage: no data modification for 1 year) blob storage
upvoted 5 times
TomdeBom
9 months, 3 weeks ago
Azure StorageV2 only supports Standard performance: https://learn.microsoft.com/en-us/azure/storage/blobs/storage-blobs-introduction#storage-accounts Immutable storage is supported by both BlockBlobStorage and StorageV2: https://learn.microsoft.com/en-us/azure/storage/blobs/immutable-storage-overview#supported-account-configurations
upvoted 4 times
chair123
9 months ago
True, I have tried to create storage account and there is only two options: 1- Standard (General Purpose V2) 2- Premium (BlockBlob, FileShare or PageBlob) there is no premium storageV2!
upvoted 5 times
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InvalidNickname
1 year, 4 months ago
Got this on Aug 5th, 2023.
upvoted 10 times
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sieira
1 year, 4 months ago
But if one of the requirements is to prevent the modification of data for one year, I think the correct choice would be a StorageV2 with standard performance because blob immutability is only available in General Purpose V2 storage account
upvoted 4 times
marcellov
1 year, 2 months ago
No, blob immutability is also available in Premium block blob (BlockBlobStorate in the question). https://learn.microsoft.com/en-us/azure/storage/blobs/immutable-storage-overview#supported-account-configurations
upvoted 3 times
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NotMeAnyWay
1 year, 4 months ago
Based on your requirements, the following options should be chosen: 1. Storage account type: BlockBlobStorage. This storage account type offers high-performance block blobs and append blobs. It provides the highest throughput for object storage in Azure, which will help maximize data throughput. Block blobs are ideal for storing text and binary data, such as documents and media files. 2. Storage service: Blob. Blob storage is optimized for storing massive amounts of unstructured data, and it can handle frequently accessed data very well. Also, Azure Blob Storage supports object-level immutability policies, which can prevent the modification of data for a certain period, satisfying your requirement to prevent data modification for one year.
upvoted 8 times
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zellck
1 year, 9 months ago
1. BlockBlobStorage 2. Blob https://learn.microsoft.com/en-us/azure/storage/blobs/storage-blob-block-blob-premium Premium block blob storage accounts make data available via high-performance hardware. Data is stored on solid-state drives (SSDs) which are optimized for low latency. SSDs provide higher throughput compared to traditional hard drives. File transfer is much faster because data is stored on instantly accessible memory chips. All parts of a drive accessible at once. By contrast, the performance of a hard disk drive (HDD) depends on the proximity of data to the read/write heads.
upvoted 6 times
zellck
1 year, 9 months ago
https://learn.microsoft.com/en-us/azure/storage/blobs/immutable-storage-overview#supported-account-configurations Immutable storage for Azure Blob Storage enables users to store business-critical data in a WORM (Write Once, Read Many) state. While in a WORM state, data cannot be modified or deleted for a user-specified interval. By configuring immutability policies for blob data, you can protect your data from overwrites and deletes.
upvoted 4 times
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_fvt
1 year, 9 months ago
Solution is Correct. You create a Storage Account (not StorageV2 something), then you chose the performance: - Standard: type will be General Purpose v2 - Premium: 3 choices of type - BlockBlob - FilesShares - PageBlobs So here we should choice premium block blob type, with blob https://learn.microsoft.com/en-us/azure/storage/common/storage-account-overview?toc=%2Fazure%2Fstorage%2Fblobs%2Ftoc.json
upvoted 13 times
yonie
1 year, 7 months ago
that was helpful thanks
upvoted 1 times
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totalz
1 year, 9 months ago
Was there such a thing called "StorageV2 with Premium performance"? Is this question sort of outdated?
upvoted 4 times
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Ivanvazovv
1 year, 10 months ago
When you try to create a new storage account, there are two options : Standard and Premium. When you click on Premium, there are three options - Block Blobs, Page Blobs and File Shares. We need Block Blobs to satisfy the first and last requirements. For the second requirement we need Blob for the retention ability.
upvoted 3 times
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OPT_001122
1 year, 10 months ago
BlockBlobStorage Blob Correct answer Thanks to all who have mentioned the exam dates
upvoted 2 times
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dimsok
1 year, 10 months ago
I am a bit confused because storageV2 premium includes blockblob, isnt it?
upvoted 6 times
sawanti
1 year, 3 months ago
Yeah, it also always confuses me... But I get it finally. StorageV2 with Premium performance doesn't even exists. If we use Premium performance, we DON'T have StorageV2 as a storage kind. If we use standard StorageV2, it will be then just called StorageV2. StorageV2 with Premium/Standard performance should NOT be even an option as above: Standard is only option for StorageV2; Using Premium Performance don't uses StorageV2 at all
upvoted 2 times
sawanti
1 year, 3 months ago
I have tested that in the Azure and I am still confused.. Premium Block Blob: BlockBlobStorage Kind Premium File Share: FileStorage Kind Premium Page Blob: StorageV2 (???????????) Standard: StorageV2
upvoted 1 times
andersonslls
10 months, 2 weeks ago
I am also confused.
upvoted 1 times
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Ghoshy
1 year, 11 months ago
Exam Question 12/28/2022
upvoted 6 times
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eduardomoralles
1 year, 11 months ago
Here answer options makes confusion between account performance and premium account type: #1- Premium Block Blobs #2- OK https://learn.microsoft.com/en-us/azure/storage/common/storage-account-overview#types-of-storage-accounts
upvoted 2 times
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