In FusionSphere OpenStack, what does "physical network" define?

What "re the three members in the "three-member separatio"" mechanism of FusionAccess desktop cloud? (Multiple choice)

The FusionAccess system administrator reclaims the static multi-user desktop and only needs to delete the user on the desktop virtual machine.

FusionSphere's management nodes are all deployed in active and standby mode, which improves the reliability of management nodes without the need to purchase additional databases and OS.
License, unless the customer requires special requirements ().

A company is headquartered in Beijing. Due to business expansion, research institutes need to be deployed in Shenzhen, Guangzhou, and Shanghai. From a business perspective, when deploying desktop cloud What kind of business ratio More appropriate?