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Correct Answer: D

Collaboration is a feature that allows users to invite other users to join an existing Windows or Linux remote desktop session with both screen sharing and audio out features enabled. A remote desktop session that is shared in this way is called a collaborative session. The user that shares a session with another user is called the session owner, and the user that joins a shared session is called a session collaborator. A Horizon administrator must enable the Session Collaboration feature for the desktop pool or farm that contains the remote desktops that support collaboration. One of the requirements to enable Session Collaboration is to use the VMware Blast display protocol for the remote desktops. VMware Blast is a protocol that provides high- performance, high-quality graphics and multimedia delivery over LAN or WAN networks. VMware Blast supports Session Collaboration by allowing multiple users to view and interact with the same remote desktop session simultaneously. Other display protocols, such as PCoIP or RDP, do not support Session Collaboration and will not allow users to share or join collaborative sessions. Therefore, to enable Session Collaboration in the VMware Horizon environment, the administrator needs to use the BLAST protocol as arequirement. References: Configuring Session Collaboration, Sharing Remote Desktop Sessions, and [VMware Horizon 8.x Professional Course]

Correct Answer: B

To enable a virtual machine to power on with a PCI graphics accelerator, such as a GPU, attached to it, the administrator needs to reserve all guest memory for that virtual machine. This is because PCI devices require direct memory access (DMA) to function properly, and memory overcommitment can interfere with DMA operations. Reserving all guest memory ensures that no memory swapping or ballooning occurs on the virtual machine, and that the memory address space is contiguous and available for DMA56. The other options are not required or valid because: Enabling Video Card 3D Graphics is not necessary for using a PCI graphics accelerator. This option is for using software-accelerated graphics or virtual shared graphics acceleration (vSGA) on a virtual machine7. Setting Memory Shares to High does not guarantee that all guest memory will be reserved. Memory shares only affect how memory resources are distributed amongcompeting virtual machines when there is memory contention on the host. Memory shares do not prevent memory overcommitment or swapping. Disabling CPU Hot Plug does not affect the use of a PCI graphics accelerator. CPU Hot Plug allows adding or removing virtual CPUs from a powered-on virtual machine. It has no relation to PCI devices or DMA operations. References := 5: VMware vSphere 7 Documentation: Add a PCI Device to a Virtual Machine 6: VMware Knowledge Base: Enabling DirectPath I/O causes virtual machines to fail to power on (1010789) 7: VMware Workstation Pro Documentation: Prepare a Virtual Machine to Use Accelerated 3D Graphics : VMware vSphere Resource Management Documentation: Memory Resource Management : VMware vSphere Virtual Machine Administration Documentation: Hot Add Memory and CPU Resources

Correct Answer: AD

Thin Clients and Zero Clients have the lowest cost of ownership and are easier to manage due to their minimalistic design, which lacks a full operating system, resulting in fewer components that require updates. These clients are designed for remote desktop services like VMware Horizon, where the computing work is done on the server side, making firmware updates and monitoring simpler and more centralized.

Correct Answer: A

The disconnections of external sessions while internal sessions remain stable suggest an issue with the network infrastructure external to the Horizon environment, specifically with the load balancer placed in front of the Unified Access Gateway (UAG) appliances. Misconfigurations such as improper session persistence settings can lead to sessions being disconnected or improperly routed, causing the observed random disconnections.

Correct Answer: A

Global Entitlements in VMware Horizon allow for the aggregation of resources across multiple pods and sites into a single entitlement. This feature is particularly beneficial when publishing applications that are hosted across different pods, as it ensures that users see only one icon for the application, regardless of which pod it is hosted on, simplifying the user experience and administration of applications in a multi-pod Horizon environment.