Scenario: Based on a discussion between a Citrix Architect and a team of Workspacelab members, the MPX Logical layout for Workspacelab has been created across three (3) sites.
They captured the following requirements during the design discussion held for a Citrix ADC design project:
* All three (3) Workspacelab sites (DC, NDR, and DR) will have similar NetScaler configurations and design.
* Both external and internal NetScaler MPX appliances will have Global Server Load Balancing (GSLB) configured and deployed in Active/Passive mode.
* GSLB should resolve both A and AAA DNS queries.
* In the GSLB deployment, the NDR site will act as backup for the DC site, whereas the DR site will act as backup for the NDR site.
* When the external NetScaler replies to DNS traffic coming in through Cisco Firepower IPS, the replies should be sent back through the same path.
* On the internal NetScaler, both the front-end VIP and backend SNIP will be part of the same subnet.
* The external NetScaler will act as default gateway for the backend servers.
* All three (3) sites, DC, NDR, and DR, will have two (2) links to the Internet from different service providers configured in Active/Standby mode.
Which design decision must the architect make the design requirements above?