Exam AZ-140 topic 2 question 21 discussion

A is the correct answer. If you plan to ever upload Windows virtual machines (VMs) from on-premises to Microsoft Azure, both generation 1 and generation 2 VMs are supported as long as they use the VHD file format and have a fixed (not dynamically expanding) sized disk. https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/plan/Should-I-create-a-generation-1-or-2-virtual-machine-in-Hyper-V Azure doesn't currently support some of the features that on-premises Hyper-V supports for generation 2 VMs. https://learn.microsoft.com/en-us/azure/virtual-machines/generation-2

Answer is A: VHD Format: Azure Virtual Desktop supports VHD (Virtual Hard Disk) format for creating images. While VHDX is a newer format with some advantages, Azure Virtual Desktop primarily supports VHD for compatibility and performance reasons. Fixed Size: Fixed size VHDs are generally preferred for creating images because they provide consistent performance. Dynamically expanding disks can lead to performance issues due to the overhead of dynamically resizing the disk.

A. Disk1

https://learn.microsoft.com/en-us/azure/virtual-machines/windows/prepare-for-upload-vhd-image#:~:text=Azure%20supports%20both%20generation%201%20and%20generation%202%20VMs%20that%20are%20in%20VHD%20file%20format%20and%20that%20have%20a%20fixed%2Dsize%20disk.

Even though VHDX can be used, the disk will need to be converted to VHD. Therefore, it will require more administrative work. VHD = Disk 1 is the answer to this question.

this question makes no sense. VHDX, or VHD can be used here. You would typically always want to use a VHDX over a VHD. https://learn.microsoft.com/en-us/azure/virtual-machines/windows/prepare-for-upload-vhd-image

Correct answer. Azure support fixed size VHD disks only. You must convert VHDX to VHD before trying to upload it to Azure.

Why not fixed VHDX? Isnt VHDX always the better choice?

Correct A

Correct. Azure only accepts fixed sized VHDs.