New Release 1Y0-204 Citrix Virtual Apps Questions

The Citrix Virtual Apps and Desktops architecture is divided into multiple conceptual layers. In Citrix architectural documentation, the Resource Layer is the layer responsible for the hosting infrastructure, which consists of:

Hypervisors (Citrix Hypervisor/XenServer, Hyper-V, VMware, Nutanix AHV)

Virtual machines

Machine creation technologies (MCS/PVS)

This layer provides the actual compute, storage, and virtualization capabilities required to run VDAs. Since the hypervisor platform is part of the virtual machine hosting environment, it resides in the Resource Layer.

The Hardware Layer refers only to physical server components.

The Control Layer manages brokering, delivery, and site configuration.

The Access Layer involves authentication and user connection entry points such as StoreFront and Citrix Gateway.

Therefore, because the hypervisor is part of the virtualization hosting environment, it belongs specifically to the Resource Layer.

Documentation References:

Citrix Virtual Apps and Desktops Architecture Overview → Conceptual Layers

Citrix Virtual Apps and Desktops Technical Architecture → Resource Layer Definition

According to the Citrix documentation, the command bind cs vserver MYVPN_http -lbvserver Vserver-CS-1 binds a load balancing virtual server to a content switching virtual server. This means that the content switching virtual server will forward the requests that match its policies to the load balancing virtual server. In this case, the content switching virtual server MYVPN_http has a policy that matches requests for so it will forward those requests to the load balancing virtual server Vserver-CS-1. Therefore, the users trying to access will be connected to the Vserver MYVPN_http, which will then connect them to Vserver-CS-1.

According to the Delivery Controllers document, Citrix recommends having at least two Controllers on different physical servers for redundancy and scalability in a production site. The document also states that “additional Controllers enable you to handle more users and more applications and desktop requests, and can improve overall responsiveness.” Therefore, the minimum number of Delivery Controllers required to deploy Citrix Virtual Apps and Desktops for 500 users is 2.