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Exam AZ-305 topic 8 question 1 discussion

Actual exam question from Microsoft's AZ-305

Question #: 1
Topic #: 8

HOTSPOT -
You plan to migrate App1 to Azure.
You need to recommend a high-availability solution for App1. The solution must meet the resiliency requirements.
What should you include in the recommendation? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

Show Suggested Answer

Suggested Answer:

Box 1: 3 -
Need three host groups to meet the third scenario requirement below.
Scenario: App1 must meet the following requirements:
Be hosted in an Azure region that supports availability zones.
Be hosted on Azure virtual machines that support automatic scaling.
Maintain availability if two availability zones in the local Azure region fail.

Box 2: 3 -
The availability setting of your host group should match your scale set.
* The host group and the scale set must be using the same availability zone.
* The fault domain count for the host group level should match the fault domain count for your scale set.
Reference:
https://docs.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts

by heero at Sept. 22, 2022, 12:44 p.m.

Comments

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techrat

Highly Voted 1 year, 7 months ago

I am confident the answer is 3-3. I had this question in my exam today, and I passed the exam with 979. In Design Infrastructure Solutions section, I got 100% correct.

upvoted 33 times

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[Removed]

Highly Voted 2 years ago

3-3 VMSS supports zone-redundant, while Dedicated Host does not. No-zone option of host group in Dedicated Host is not zone-redundant, it represents regional resource. - You must create a host group in each zone. - You must create a VMSS in each zone where the host group is deployed. https://learn.microsoft.com/en-us/azure/reliability/availability-zones-service-support#azure-services-with-availability-zone-support https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts#virtual-machine-scale-set-support In addition, when a Host Groups is deployed in each zone, creating a zone-redundant VMSS is also not possible. All tested with multiple hosts, FSv2 Type1.

upvoted 27 times

steel72

1 year, 8 months ago

The host group and the scale set must be using the same availability zone. https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts#virtual-machine-scale-set-support

upvoted 1 times

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SeMo0o0o0o

Most Recent 2 weeks, 6 days ago

CORRECT

upvoted 1 times

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Ezio8423

1 year, 7 months ago

Automatic VM placement needs to be enabled. The availability setting of your host group should match your scale set. A regional host group (created without specifying an availability zone) should be used for regional scale sets. The host group and the scale set must be using the same availability zone. The fault domain count for the host group level should match the fault domain count for your scale set. The Azure portal lets you specify max spreading for your scale set, which sets the fault domain count of 1. Dedicated hosts should be created first, with sufficient capacity, and the same settings for scale set zones and fault domains. The supported VM sizes for your dedicated hosts should match the one used for your scale set.

upvoted 3 times

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globy118

1 year, 9 months ago

Exam Question 02/15/2023

upvoted 3 times

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GarryK

1 year, 9 months ago

3-3 https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts#groups-hosts-and-vms A host group is created in a single availability zone. Once created, all hosts will be placed within that zone. To achieve high availability across zones, you need to create multiple host groups (one per zone) and spread your hosts between them accordingly. If you assign a host group to an availability zone, all VMs created on that host must be created in the same zone. When creating a Virtual Machine Scale Set, you can specify an existing host group to have all of the VM instances created on dedicated hosts.

upvoted 6 times

GarryK

1 year, 9 months ago

The host group and the scale set must be using the same availability zone.

upvoted 1 times

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OPT_001122

1 year, 10 months ago

3 and 3

upvoted 1 times

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FabrityDev

1 year, 10 months ago

Based on https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts#virtual-machine-scale-set-support i would say it's 3-3

upvoted 2 times

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RandomNickname

1 year, 10 months ago

3-3 Looks correct as per article: https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts#groups-hosts-and-vms

upvoted 1 times

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Guest

1 year, 11 months ago

Maybe this Testlet can be merged with Topic 5 - Testlet 1? Case looks identical (questions are different)

upvoted 1 times

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Ravi1383

2 years ago

what are the correct answer folks? what have changed on 10th Oct?

upvoted 2 times

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Snownoodles

2 years, 1 month ago

3-3 "If the VM is in an availability zone, it must be the same availability zone as the host group. The availability zone settings for the VM and the host group must match" https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts-how-to?tabs=portal

upvoted 4 times

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heero

2 years, 2 months ago

should be 3 1

upvoted 5 times

ronsav80

2 years, 2 months ago

I think based on https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts under "Virtual Machine Scale Set Support", it states "When creating a virtual machine scale set you can specify an existing host group to have all of the VM instances created on dedicated hosts." So based on this, I think this is 3-3

upvoted 9 times

Galron

2 years, 1 month ago

1 scale set can span the 3 hosts in separate AZ's.

upvoted 2 times

ckyap

2 years ago

3 host in the same availability zone only, if you want to span across different zone, you need to create additional host group.https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-hosts-how-to?tabs=portal#:~:text=Span%20across%20multiple%20availability%20zones.%20In%20this%20case%2C%20you%27re%20required%20to%20have%20a%20host%20group%20in%20each%20of%20the%20zones%20you%20wish%20to%20use

upvoted 1 times

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Galron

2 years, 1 month ago

Recent changes on 10th Oct makes it 1 and 1. Will they update the answers?

upvoted 1 times

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