What does a Citrix Engineer need to consider when upgrading the Workspace Environment Management (WEM) Administration Console?

Which two considerations should a Citrix Engineer be aware of when building Platform Layers within a multi-hypervisor Citrix App Layering environment? (Choose two.)

Scenario: A Citrix Engineer is managing a large environment with multiple locations. The setup is as follows:
- The setup has a single Citrix Virtual Apps and Desktops site with multiple zones such as a Primary zone and 3 Satellite zones.
-Virtual Delivery Agents (VDAs) are available for all applications in all 3 Satellite zones.
-An application 'app1' has its application database located in Satellite zone.
-As a sovereign mandate, it is desirable that this application database should NOT be accessible from zones 2 and 3.
-The application does NOT create any database cache and cannot work if the database is NOT reachable. - The outage is acceptable for complying with the sovereign mandate.
Which zone preference should the engineer configure to achieve this setup?

Scenario: A Citrix Engineer recently changed the XML port in the Citrix Virtual Apps and Desktops site. After the change, the engineer observed that there is an XML communication port mismatch. The engineer immediately identified that the port was only changed on the Delivery Controller and no change was performed on the StoreFront server.
What are the two ways the engineer can change the port on the StoreFront server to match the changes made on the Delivery Controller? (Choose two.)

A Citrix Engineer wants to enable the "Log Off Web Portal When Session is Launched" feature within Workspace Environment Management (WEM) transformer settings.
What does the engineer need to do prior to enabling this feature?