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Exam AZ-300 topic 1 question 54 discussion

Actual exam question from Microsoft's AZ-300

Question #: 54
Topic #: 1

HOTSPOT -
You have an Azure subscription that contains multiple resource groups. You create an availability set as shown in the following exhibit.

You deploy 10 virtual machines to AS1.
Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.
NOTE: Each correct selection is worth one point.
Hot Area:

Show Suggested Answer

Suggested Answer:

Box 1: 6 -
Two out of three update domains would be available, each with at least 3 VMs.
An update domain is a group of VMs and underlying physical hardware that can be rebooted at the same time.
As you create VMs within an availability set, the Azure platform automatically distributes your VMs across these update domains. This approach ensures that at least one instance of your application always remains running as the Azure platform undergoes periodic maintenance.
Box 2: the West Europe region and the RG1 resource group
References:
https://docs.microsoft.com/en-us/azure/virtual-machines/windows/regions-and-availability

by onlyfunmails at Dec. 20, 2019, 4:41 a.m.

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jivom

Highly Voted 5 years, 2 months ago

1 | 2 | 3 4 | 5 | 6 7 | 8 | 9 10| Worst case scenario, the first update domain is being updated meaning 4 out of a total of 10 VMs are updated in that case, leaving us with at minimum 6 available VMs.

upvoted 25 times

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tundervirld

Highly Voted 5 years ago

See the scenary in a table. VM|FD|UD VM0|0|0 VM1|1|1 VM2|0|2 VM3|1|0 VM4|0|1 VM5|1|2 VM6|0|0 VM7|1|1 VM8|0|2 VM9|1|0 We have this if we thinking in groups of Updated Domain: FD 0|FD 1| VM0|VM3|UD0 VM6|VM9|UD0 VM4|VM1|UD1 -|VM7|UD1 VM2|VM5|UD2 VM8|-|UD2 In summary, we have Update Domain 0(UD0): 4 VM Update Domain 1(UD1): 3 VM Update Domain 2(UD2): 3 VM So in updated planning, we have two options: - The first UD0 is updated, therefore we have 6 VM available. - UD1 or UD2 is updated, therefore we have 7 VM available. In the answer options, we don't have the number 7 like an option, so the answer is 6VM available. Here you have a link to read and try to understand better: https://azure.codefari.com/2018/12/what-are-availability-set-fault-domain.html

upvoted 21 times

praveen97

5 years ago

excellent explanation and the article. Easy to understand.

upvoted 2 times

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azureexam

5 years ago

Correct

upvoted 1 times

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Kiwino

Most Recent 4 years, 10 months ago

FD Starts from 0, so total there are 3 FDs in which VMs would be distributed

upvoted 1 times

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gboyega

5 years ago

Given Answer is correct

upvoted 4 times

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nabylion

5 years ago

https://docs.microsoft.com/en-us/azure/availability-zones/az-overview

upvoted 1 times

uzairahm007

4 years, 8 months ago

Availability set and Availability Zones are different please do not confuse them.

upvoted 1 times

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N3v3rmann

5 years, 6 months ago

"Two out of three update domains would be available, each with at least 3 VMs." I think we will have within the planned maintenance 2*2 =4 vms? We have 3 Update Domains and 2 Fault Domain within the maintenance we have 2 Update Domains with 2 Fault Domains ?? Some ideads?

upvoted 1 times

bootyholeman

5 years, 6 months ago

I think maintanance is an update domain so one update domain is down. the rest two will have (10 vms/3 update domains)*2 active update domains = 6.66. Either 6 or 7 but the question is "at least" so 6.

upvoted 17 times

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Karls

5 years, 6 months ago

New VM must be add in same RG. Box 2 is correct. https://social.technet.microsoft.com/wiki/contents/articles/51828.azure-vms-availability-sets-and-availability-zones.aspx

upvoted 1 times

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onlyfunmails

5 years, 7 months ago

same region, any resource group won't support for AS? Could not find any where specifically.

upvoted 1 times

vishg

5 years, 7 months ago

Only support same region same RG

upvoted 10 times

tartar

4 years, 10 months ago

6 RG1, same region

upvoted 2 times

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