Which command can a Citrix Engineer use to get information about a Citrix Virtual Apps and Desktops setup?

Which type of application does the User Layer support?

Scenario: A Citrix Engineer is maintaining a Citrix Virtual Apps and Desktops environment. The engineer has recently deployed a new Workspace Environment Management (WEM) configuration to help improve the performance of published applications and desktops.
In which two ways can the new WEM deployment benefit the user experience? (Choose two.)

Scenario: A Citrix user is accessing a Windows 10 VDI machine using a personal laptop. The VDI is becoming unregistered frequently, which is making it difficult for the user to access it. In order to troubleshoot the issue, a Citrix Engineer is assigned to collect CDF logs.
On which two components should the engineer run Citrix Diagnostic Facility (CDF) control to capture the required logs? (Choose two.)

A SQL Database Administrator has been asked to create a backup policy for the Citrix Virtual Apps and Desktops databases.
Which three SQL databases does a SQL Database Administrator need to back up for a Citrix environment?
(Choose three.)