What are two valid Redundancy options for the Citrix License Server? (Choose two.)

Scenario: A Citrix Engineer needs to use Citrix App Layering to create layered images for use with a Citrix Virtual Apps and Desktops environment.
The environment currently has the following (MCS) Machine Creation Services-provisioned images.
-Windows 10 Virtual Delivery Agent (VDA) machines with App A, App B, and App C installed
-Windows 10 VDA machines with App A and App B installed
Application A is a common app that is needed by all users. Application B is a time reporting app needed by all individual contributors, and Application C is a managerial app needed by executives, but restricted from use by everyone else.
The environment uses Citrix Hypervisor to host all VDA machines.
To meet the minimum requirements while reducing administrative effort, the engineer would need
__________ layered image(s), using __________.

Scenario: A Citrix Engineer has recently implemented Citrix Gateway in a Citrix Virtual Apps and Desktops environment. The engineer has done the testing with the test user account for authentication and enumeration of the published resources.
During the authentication at Citrix Gateway, the test user is getting the error ''403 - Forbidden:
Access is denied."
Which two configuration steps are causing this error? (Choose two.)

A Citrix Engineer is in the process of updating application layers.
Which three layer integrity messages must the engineer address before finalizing the application layer? (Choose three.)

What are two valid Redundancy options for the Citrix License Server? (Choose two.)