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Exam AZ-900 topic 1 question 2 discussion

Actual exam question from Microsoft's AZ-900
Question #: 2
Topic #: 1
[All AZ-900 Questions]

Your company has datacenters in Los Angeles and New York. The company has a Microsoft Azure subscription.
You are configuring the two datacenters as geo-clustered sites for site resiliency.
You need to recommend an Azure storage redundancy option.
You have the following data storage requirements:
✑ Data must be stored on multiple nodes.
✑ Data must be stored on nodes in separate geographic locations.
✑ Data can be read from the secondary location as well as from the primary location
Which of the following Azure stored redundancy options should you recommend?

  • A. Geo-redundant storage
  • B. Read-only geo-redundant storage
  • C. Zone-redundant storage
  • D. Locally redundant storage
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
RA-GRS allows you to have higher read availability for your storage account by providing ג€read onlyג€ access to the data replicated to the secondary location. Once you enable this feature, the secondary location may be used to achieve higher availability in the event the data is not available in the primary region. This is an
ג€opt-inג€ feature which requires the storage account be geo-replicated.
References:
https://docs.microsoft.com/en-us/azure/storage/common/storage-redundancy https://docs.microsoft.com/en-us/azure/storage/common/storage-redundancy-grs#read-access-geo-redundant-storage

Comments

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BinuRaj
Highly Voted 3 years ago
Answer is correct. Geo-redundant storage (with GRS or GZRS) replicates your data to another physical location in the secondary region to protect against regional outages. However, that data is available to be read only if the customer or Microsoft initiates a failover from the primary to secondary region. When you enable read access to the secondary region, your data is available to be read at all times, including in a situation where the primary region becomes unavailable. For read access to the secondary region, enable read-access geo-redundant storage (RA-GRS) or read-access geo-zone-redundant storage (RA-GZRS).
upvoted 95 times
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scab
Highly Voted 3 years ago
I think it 's a mistake, it should be "B. Read-access geo-redundant storage" instead of "B. Read-only geo-redundant storage"
upvoted 55 times
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shahrzadkhb
Most Recent 2 weeks, 5 days ago
Selected Answer: B
The correct answer would be B. For read access to the secondary region, enable read-access geo-redundant storage (RA-GRS) or read-access geo-zone-redundant storage (RA-GZRS). Link to the reference: https://learn.microsoft.com/en-us/training/modules/describe-azure-storage-services/3-redundancy
upvoted 1 times
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Stel0Papad4
3 months, 1 week ago
Shouldn't be RA-GZRS (Read-Access Geo-Zone-Redundant Storage)? Cause it actually says that it need to be stored in multiple nodes, so it has to has the Zone Redundant aspect in it.
upvoted 2 times
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PPV20
4 months ago
Option B. since by default, we cannot read from secondary region unless there is a failover. RA-GRS and RA-GZRS allows read option from secondary region without a failover.
upvoted 2 times
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MAFA56
4 months, 3 weeks ago
Selected Answer: B
B is correct Read access to data in the secondary region Geo-redundant storage (with GRS or GZRS) replicates your data to another physical location in the secondary region to protect against regional outages. However, that data is available to be read only if the customer or Microsoft initiates a failover from the primary to secondary region. However, if you enable read access to the secondary region, your data is always available, even when the primary region is running optimally. For read access to the secondary region, enable read-access geo-redundant storage (RA-GRS) or read-access geo-zone-redundant storage (RA-GZRS).
upvoted 1 times
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thej_raaaaas
4 months, 3 weeks ago
Selected Answer: B
specially it has multiple location, and data should be read form
upvoted 1 times
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AparnaBavanari
5 months, 2 weeks ago
Geo-redundant Storage
upvoted 1 times
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ipereira
8 months, 4 weeks ago
Selected Answer: B
answer is B
upvoted 2 times
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Octy7408
9 months ago
B. Read-only geo-redundant storage
upvoted 1 times
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LoneJando
9 months, 2 weeks ago
B = RA-GRS is the correct answer
upvoted 1 times
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Du_MS900
9 months, 3 weeks ago
Para atender aos requisitos de armazenamento de dados descritos, você deve recomendar a opção: A. Armazenamento com redundância geográfica O armazenamento com redundância geográfica replica os dados em vários datacenters geograficamente separados, permitindo que você mantenha cópias dos dados tanto no local primário quanto no local secundário. Além disso, os dados podem ser lidos em ambos os locais, tornando-o adequado para cenários de resiliência do site em que você precisa de alta disponibilidade e capacidade de leitura em ambas as localizações geográficas separadas. As outras opções não atendem aos requisitos específicos mencionados, pois não oferecem a mesma combinação de resiliência geográfica e capacidade de leitura nos locais primário e secundário.
upvoted 1 times
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SAFM
10 months ago
Answer B is correct: "Geo-redundant storage (with GRS or GZRS) replicates your data to another physical location in the secondary region to protect against regional outages. However, that data is available to be read only if the customer or Microsoft initiates a failover from the primary to secondary region. However, if you enable read access to the secondary region, your data is always available, even when the primary region is running optimally. For read access to the secondary region, enable read-access geo-redundant storage (RA-GRS) or read-access geo-zone-redundant storage (RA-GZRS)." https://learn.microsoft.com/en-us/training/modules/describe-azure-storage-services/3-redundancy
upvoted 2 times
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AntonioTech
10 months, 3 weeks ago
Selected Answer: A
Given the data storage requirements you've provided, the most suitable Azure storage redundancy option would be: A. Geo-redundant storage Geo-redundant storage replicates your data to a secondary region, which is a separate geographic location. This meets the requirement of storing data on nodes in separate geographic locations. Additionally, geo-redundant storage allows you to read data from both the primary and secondary locations, which satisfies the requirement of being able to read data from the secondary location as well. The other options: B. Read-only geo-redundant storage: While this option provides read access to the secondary location, it doesn't store data on nodes in separate geographic locations. C. Zone-redundant storage: This option replicates data within a single region across multiple Availability Zones, but it doesn't meet the requirement of storing data in separate geographic locations. D. Locally redundant storage: This option replicates data within a single datacenter in a region, which doesn't fulfill the requirement of storing data on nodes in separate geographic locations. So, the recommended option is A. Geo-redundant storage.
upvoted 6 times
[Removed]
9 months, 4 weeks ago
"Geo-redundant storage allows you to read data from both the primary and secondary locations", but according to Microsoft, "only if the customer or Microsoft initiates a failover from the primary to secondary region." With how this question is worded, A can be technically correct, but B allows for better availability. Although if you choose RA-GRS, the data from the 2nd region is always readable. Also how can you say RA-GRS "doesn't store data on nodes in separate geographic locations"? That defeats the purpose of calling it GRS, no? Source: https://learn.microsoft.com/en-us/training/modules/describe-azure-storage-services/3-redundancy
upvoted 1 times
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guru_ji
11 months, 4 weeks ago
Selected Answer: B
the answer is B.
upvoted 3 times
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Soumyat85
1 year ago
The correct answer is - A. Geo-redundant storage Geo-redundant storage meets all the specified requirements. With geo-redundant storage, data is stored on multiple nodes located in separate geographic locations. It provides redundancy across regions, ensuring high availability and data durability. In addition, data can be read from both the primary and secondary locations, allowing for access to the data even if one location becomes unavailable. B. Read-only geo-redundant storage does not fulfill the requirement that data can be written to and read from both the primary and secondary locations. C. Zone-redundant storage is designed for redundancy within a single Azure region, and it does not satisfy the requirement for geographic separation. D. Locally redundant storage does not meet the requirement of storing data on nodes in separate geographic locations.
upvoted 5 times
[Removed]
9 months, 4 weeks ago
"In addition, data can be read from both the primary and secondary locations, allowing for access to the data even if one location becomes unavailable", but according to Microsoft, "only if the customer or Microsoft initiates a failover from the primary to secondary region." RA-GRS (Option B) provides more availability. "RA-GRS does not fulfill the requirement that data can be written to and read from both the primary and secondary locations." None of the requirements mention that both primary and secondary locations should be "written to" at the same time. You CAN write to both, but only if one location "initiates a failover". Both GRS and RA-GRS supports this. Source: https://learn.microsoft.com/en-us/training/modules/describe-azure-storage-services/3-redundancy
upvoted 1 times
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RVAadmin
1 year ago
The difference between GRS and RA GRS is fairly simple, GRS only allows to be read in the secondary zone in the even of a failover from the primary to secondary while RA GRS allows the option to read in the secondary whenever
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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