Exam AZ-100 topic 3 question 4 discussion

Actual exam question from Microsoft's AZ-100

Question #: 4
Topic #: 3

You have an Azure subscription.
You plan to use Azure Resource Manager templates to deploy 50 Azure virtual machines that will be part of the same availability set.
You need to ensure that as many virtual machines as possible are available if the fabric fails or during servicing.
How should you configure the template? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Select two alternatives below.

A. platformFaultDomainCount: 0
B. platformFaultDomainCount: 1
C. platformFaultDomainCount: 2
D. platformFaultDomainCount: 3
E. platformFaultDomainCount: 4
F. platformUpdateDomainCount: 10
G. platformUpdateDomainCount: 20
H. platformUpdateDomainCount: 25
I. platformUpdateDomainCount: 30
J. platformUpdateDomainCount: 40 K. platformUpdateDomainCount: 50

Show Suggested Answer

Suggested Answer: CG 🗳️
Use two fault domains.
2 or 3 is max, depending on which region you are in.
Use 20 for platformUpdateDomainCount
Increasing the update domain (platformUpdateDomainCount) helps with capacity and availability planning when the platform reboots nodes. A higher number for the pool (20 is max) means that fewer of their nodes in any given availability set would be rebooted at once.
References:
https://www.itprotoday.com/microsoft-azure/check-if-azure-region-supports-2-or-3-fault-domains-managed-disks https://github.com/Azure/acs-engine/issues/1030

by praveen97 at July 5, 2020, 5:55 a.m.

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praveen97

4 years, 11 months ago

https://docs.microsoft.com/en-us/azure/virtual-machines/windows/manage-availability Answers are Fault Domain can be set to a maximum value of 3 Update domain can be set to a maximum value of 20

upvoted 4 times

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