AZ-204 topic 1 question 7

Should be 20

The `platformUpdateDomainCount` property in an Azure Resource Manager (ARM) template specifies the number of update domains for the Azure virtual machines within an availability set. Update domains are groups of VMs that are updated and rebooted together during planned maintenance events to minimize downtime for applications.

The maximum value allowed for `platformUpdateDomainCount` is 20. Therefore, to ensure that the ARM template allows for as many virtual machines as possible to remain accessible in the event of fabric failure or maintenance, you should configure:

B. 20

The maximum value you can configure for platformUpdateDomainCount is 20. This means that virtual machines within the availability set will be spread across 20 update domains. By setting this value to the maximum, you ensure that the virtual machines are distributed optimally for availability during maintenance or update operations.

The upper limit of platformUpdateDomainCount is 20

B 20 is the correct one.

A higher value would generally be preferable to improve availability. Among the options, D. 40 would provide the highest degree of isolation and availability during maintenance or updates. Therefore, you should configure the platformUpdateDomainCount property with a value of 40

To ensure high availability within an Azure availability set, you need to distribute virtual machines across different update domains and fault domains. Update domains represent groups of virtual machines that can undergo maintenance or updates together, minimizing potential downtime.

For the best balance between high availability and maintenance, it's recommended to set the platformUpdateDomainCount property to 20. This ensures that your virtual machines are spread across 20 update domains. The platform imposes a default limit of 20 update domains in each availability set.

The correct answer is B. 20.

The platformUpdateDomainCount property in Azure Resource Manager (ARM) templates specifies the number of update domains that should be created for the availability set. The maximum value for this property is 20.

By configuring the platformUpdateDomainCount property to the maximum value, you can help to ensure that your virtual machines are distributed across as many update domains as possible, which will help to protect them from maintenance operations that require updating virtual machines in a single update domain.