Which Citrix ADC-owned IP address will send traffic from the Citrix ADC to NTP servers by default?

According to Citrix leading practices, what is the minimum number of Delivery Controllers required to deploy Citrix Virtual Apps and Desktops for 500 users?

A Citrix Administrator complains that between the two rewrite policies bound to the vserver, only one policy, whichever has lower priority, works. The other policy is never used.
Click the 'Exhibit' button to view the screenshot of the relevant policy binding.

What is the cause of the issue?

Scenario: A Citrix Administrator is required to maximize the usage of the Citrix Virtual Apps and Desktops Site by enabling users to access the Site from external devices and reducing the cost and the effort required to maintain the infrastructure. The desktops for the users are provisioned using Citrix Provisioning.
Which set of resources will enable the administrator to achieve the objective?

By default, what is the printing behavior when no printing policy is configured?