You decide to add a new image to the Shared Image Gallery definition. This image is utilized for a large-scale Azure Virtual Desktop deployment with 60 Session Hosts. While deploying, you notice that the new session host process is somewhat slow and it gets time out. Which of the following steps would you take to resolve this issue?

Answer options:

A.Double the replica count in the deployment region
B.Increase the replica count to 3 in the deployment region
C.Increase the replica count to 6 in the deployment region
D.Replicate the image to 10 different regions
E.Replicate the image to 5 different regions

Correct Answer: B 
Each image replica can create up to 20 VMs at a time. Therefore, to implement 60 Session Hosts, 3 replicas are recommended. Replicating the image to different regions won’t help as the Session Hosts are built with the replica in the deployment region.
Option A is incorrect. Each image replica can create up to 20 VM`s at a time. Therefore, to implement 60 Session Hosts, 3 replicas are needed.
Option B is correct. Increasing the replica count to 3 in the deployment region will help in resolving the issue of slow speed and time out.
Option C is incorrect. 6 replicas would be needed if there would have been 120 session hosts.
Option D is incorrect. Replicating the image to different regions won’t help as the Session Hosts are built with the replica in the deployment region.
Option E is incorrect. Replicating the image to different regions won’t help as the Session Hosts are built with the replica in the deployment region.
Reference: To know more about shared image galleries, please visit the below-given link: 

https://docs.microsoft.com/en-us/azure/virtual-machines/shared-image-galleries?WT.mc_id=AZ-MVP-5004159#scaling