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AZ-303 Exam - Question 238

A company plans to use third-party application software to perform complex data analysis processes. The software will use up to 500 identical virtual machines

(VMs) based on an Azure Marketplace VM image.

You need to design the infrastructure for the third-party application server. The solution must meet the following requirements:

✑ The number of VMs that are running at any given point in time must change when the user workload changes.

✑ When a new version of the application is available in Azure Marketplace it must be deployed without causing application downtime.

✑ Use VM scale sets.

✑ Minimize the need for ongoing maintenance.

Which two technologies should you recommend? Each correct answer presents part of the solution.

NOTE: Each correct selection is worth one point.

Show Answer
Correct Answer: BD

The best technologies to recommend are autoscale and managed disks. Autoscale will handle the dynamic adjustment of VM instances based on user workload, thus meeting the requirement of changing the number of VMs running at any given point in time as the workload changes. Managed disks are necessary to simplify storage management and reduce maintenance needs. Additionally, managed disks allow for seamless updates and scaling, minimizing downtime when new application versions are deployed from Azure Marketplace.

Discussion

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junear
Apr 4, 2021

BD By setting maximum number of instances over 100, you are enabling the scale set to scale to multiple placement groups. So C is not possible.

michel28vda
Apr 29, 2021

Answer is corect. Scale sets can be created with Azure Managed Disks instead of traditional Azure storage accounts. https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-design-overview

Stephan99
Jan 10, 2021

By default, a scale set consists of a single placement group with a maximum size of 100 VMs. If a scale set property called singlePlacementGroup is set to false, the scale set can be composed of multiple placement groups and has a range of 0-1,000 VMs. When set to the default value of true, a scale set is composed of a single placement group, and has a range of 0-100 VMs. To decide whether your application can make effective use of large scale sets, consider the following requirements: - Scale sets created from Azure Marketplace images can scale up to 1,000 VMs. - Large scale sets are designed to work exclusively with Managed Disks to reduce your storage management overhead, and to avoid the risk of running into subscription limits for storage accounts. https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-placement-groups

[Removed]
Mar 4, 2021

C and D https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-placement-groups When you create a scale set in the Azure portal, just specify the Instance count value of up to 1,000. If it is more than 100 instances, Enable scaling beyond 100 instances will be set to Yes, which will allow it to scale to multiple placement groups. Large scale sets require Azure Managed Disks. Scale sets that are not created with Managed Disks require multiple storage accounts (one for every 20 VMs). Large scale sets are designed to work exclusively with Managed Disks to reduce your storage management overhead, and to avoid the risk of running into subscription limits for storage accounts.

[Removed]
Mar 4, 2021

or A & D Large scale sets require Azure Managed Disks. Scale sets that are not created with Managed Disks require multiple storage accounts (one for every 20 VMs). Large scale sets are designed to work exclusively with Managed Disks to reduce your storage management overhead, and to avoid the risk of running into subscription limits for storage accounts.

max_n
Oct 1, 2021

noo ! read this and i qoute Large scale sets require Azure Managed Disks. Scale sets that are not created with Managed Disks require multiple storage accounts (one for every 20 VMs). Large scale sets are designed to work exclusively with Managed Disks to reduce your storage management overhead, and to avoid the risk of running into subscription limits for storage accounts. ref: https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-placement-groups

max_n
Oct 1, 2021

noo ! read this and i qoute Large scale sets require Azure Managed Disks. Scale sets that are not created with Managed Disks require multiple storage accounts (one for every 20 VMs). Large scale sets are designed to work exclusively with Managed Disks to reduce your storage management overhead, and to avoid the risk of running into subscription limits for storage accounts. ref: https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-placement-groups

JMG73
Feb 10, 2021

repeated question 053 - https://www.examtopics.com/exams/microsoft/az-303/view/11/

edmacoar123
Nov 19, 2021

On exam today 19/11/21. Correct answer. Score 860.