OCA-H Horizon Administrator Practice Questions
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- v1Horizon Administrator 317 questions Current
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- Level
- Administrator
- Valid for
- 3 years (estimated, to be confirmed)
Domains covered on the exam 10
- Horizon Architecture and Installation
- vSphere Infrastructure for Horizon
- Desktop Creation and Configuration
- Desktop Pool Management
- Horizon Client Configuration
- Horizon Monitoring and Troubleshooting
- Horizon Protocols and Graphics
- Horizon Security
- Horizon Scalability and Cloud Integration
- Integration with Omnissa Access and Application Management
- 1
A Horizon Administrator wants to prevent users from copying text from their local client machine and pasting it into the virtual desktop, but allow copying text from the virtual desktop to the client machine.
Which Horizon Policy setting should be configured?
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Correct answer: A
The Horizon Agent ADMX setting 'Configure clipboard redirection' (View Agent Configuration > Clipboard Redirection) controls the copy/paste direction. Its values are 'Enabled client to agent only' (default), 'Disabled in both directions', 'Enabled in both directions' and 'Enabled agent to client only'. 'Enabled agent to client only' lets text be copied out of the remote desktop to the client and blocks pasting from the client into the desktop. Horizon Smart Policies in DEM can also control this. Source: Omnissa Horizon Remote Desktop Features, 'View Agent Configuration ADMX Template Settings'.
- 2
True or False: In a Horizon 8 environment, the 'Instant Clone' provisioning process requires a 'View Composer' server to be installed and configured.
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Correct answer: B
False. Instant Clones use the 'vmFork' technology built into vSphere and do not require View Composer (which was used for Linked Clones). Instant Clone architecture is simpler and does not need a separate database or server component.
- 3
An administrator is setting up a Linux desktop pool using Horizon 8. Which of the following Linux distributions is officially supported for the Horizon Agent?
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Correct answer: A
Ubuntu 22.04 LTS is a supported Horizon Agent for Linux distribution. Per Omnissa Horizon 8 docs, instant-clone Linux pools are supported on Ubuntu 20.04/22.04/24.04, Debian 10.x/11.x/12.x, RHEL 8.x/9.x, Rocky Linux 8.x/9.x and SLED/SLES 15.x. Arch Linux, Gentoo and FreeBSD are not supported.
- 4
When integrating Horizon 8 with Omnissa Access, what is the purpose of the 'Virtual App Service' on the Omnissa Access Connector?
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Correct answer: A
The Virtual App Service component of the connector is responsible for synchronizing resources (View Pools, RDS Apps) from the Connection Server to the Access catalog so users can see and launch them.
- 5
What is the primary function of the 'Horizon Cloud Connector' appliance?
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Correct answer: A
The Cloud Connector pairs the on-prem pod with the control plane, enabling subscription license enforcement and features like Universal Broker and Image Management Service.
- 6
Case Study: HealthSystem VDI
HealthSystem is deploying a Horizon 8 environment for 500 nurses. The nurses roam between patient rooms and need their session to follow them ('roaming session'). The endpoints are zero clients.
Requirements:
- Fast login times (< 15 seconds).
- User settings (printer mapping, application settings) must persist.
- The desktop OS should be reset after every logout to ensure a clean state.
Which desktop pool configuration meets these requirements?
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Correct answer: C
Floating assignment allows any user to grab any desktop (efficient). Instant Clones refresh on logout (clean state). DEM persists the user settings across these non-persistent desktops, ensuring the personalized experience.
- 7
Users report intermittent failures connecting through a Unified Access Gateway (UAG) appliance. Omnissa Support requests the complete UAG log bundle, including the edge service logs, network state and appliance configuration.
How should the administrator collect it?
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Correct answer: D
Omnissa documents collecting Unified Access Gateway logs by downloading UAG-log-archive.zip from the Support Settings section of the UAG Admin UI. The archive holds all appliance logs from /opt/omnissa/gateway/logs plus system information such as netstat, ifconfig, nftables rules, journalctl output and the UAG configuration (JSON/INI). Log levels can be raised beforehand. support.bat collects Horizon Agent or Connection Server logs, vdmadmin -A manages Horizon Agent logging, and ESXi/vCenter log exports do not include the appliance's own logs. Source: Deploying and Configuring Unified Access Gateway, 'Collecting Logs from the Unified Access Gateway Appliance'.
- 8
A Horizon administrator uses App Volumes with an instant-clone pool. They want an application package to already be attached when the desktop starts, before any user logs in, rather than being delivered during the user's logon.
Which assignment approach should be used?
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Correct answer: A
App Volumes delivers assigned packages at user login (user, group and OU assignments) or at computer startup (computer assignments). Assigning the package to the computer entity, or an OU containing the computers, attaches it at startup, so it is present before the user logon begins. 'Do not deliver for these assignments at startup or login' does the opposite: it defers delivery to command-line delivery. 'Mount ESXi' only changes how mounts are performed. (Omnissa App Volumes Administration Guide, Assign an App Volumes Application to an Entity.)
- 9
An administrator is troubleshooting poor user experience for a group of graphic designers using 3D modeling software in their Horizon desktops. The goal is to provide dedicated GPU resources to each designer's virtual machine for maximum performance. Which graphics acceleration technology and configuration should be implemented?
graph TD subgraph ESXi_Host GPU1[Physical NVIDIA GPU 1] GPU2[Physical NVIDIA GPU 2] end subgraph Virtual_Machines VM1[Designer VM 1] VM2[Designer VM 2] end GPU1 -- Passthrough --> VM1 GPU2 -- Passthrough --> VM2Show answer details
Correct answer: D
Virtual Dedicated Graphics Acceleration (vDGA) uses vSphere DirectPath I/O (PCI passthrough) to give a virtual machine exclusive access to one entire physical GPU with the native NVIDIA driver. This offers the highest performance for demanding 3D applications, at a strict 1:1 mapping of GPU to VM. vSGA and NVIDIA vGPU share a GPU among multiple VMs, and software 3D rendering uses the CPU.
- 10
After a recent network change, users connecting externally through a Unified Access Gateway (UAG) report that they can authenticate successfully, see their list of available desktops, but receive a black screen when they try to launch a session. Internal users connecting directly to the Connection Server are unaffected. What is the most likely cause of this issue?
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Correct answer: B
Users can authenticate and see their entitlements, so the control traffic is working: client to UAG over HTTPS, and UAG to Connection Server. The black screen means the display-protocol connection from the UAG in the DMZ to the Horizon Agent is failing. For tunnelled or gateway connections, Omnissa requires TCP and UDP 22443 from the Unified Access Gateway to the Horizon Agent for Blast, and TCP 4172 plus UDP 4172 (from source port 55000) for PCoIP. A firewall change that blocks these ports between the DMZ and the desktop network causes exactly this symptom, while internal users are unaffected. Source: Horizon Security, 'TCP and UDP Ports for Clients and Agents'.
- 11
A Horizon administrator needs to create a custom role for a help desk team. The team must be able to log off user sessions and send messages to users, restart virtual desktops, and look up users and sessions in the Horizon Help Desk Tool. They must NOT be able to create or delete pools, or modify global configuration settings. Which THREE privileges should be assigned to this custom role? (Select THREE)
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Correct answer: A, C, F
Per the Horizon privilege tables: Manage Sessions allows disconnecting and logging off sessions and sending messages. Manage Reboot Operation allows restarting virtual desktops and resetting VMs (restart and reset need this privilege, not Manage Sessions). Manage Help Desk (Read only) gives read-only access to the Horizon Help Desk Tool and pool/session information. None of these lets the role create or delete pools (Manage Farms and Desktop and Application Pools), change global configuration (Manage Global Configuration and Policies) or manage roles (Manage Roles and Permissions). Source: Omnissa Horizon 8 Administration, 'Object-Specific Privileges' and 'Privileges for Managing Sessions and Global Sessions'.
Per the Horizon privilege tables: Manage Sessions allows disconnecting and logging off sessions and sending messages. Manage Reboot Operation allows restarting virtual desktops and resetting VMs (restart and reset need this privilege, not Manage Sessions). Manage Help Desk (Read only) gives read-only access to the Horizon Help Desk Tool and pool/session information. None of these lets the role create or delete pools (Manage Farms and Desktop and Application Pools), change global configuration (Manage Global Configuration and Policies) or manage roles (Manage Roles and Permissions). Source: Omnissa Horizon 8 Administration, 'Object-Specific Privileges' and 'Privileges for Managing Sessions and Global Sessions'.
Per the Horizon privilege tables: Manage Sessions allows disconnecting and logging off sessions and sending messages. Manage Reboot Operation allows restarting virtual desktops and resetting VMs (restart and reset need this privilege, not Manage Sessions). Manage Help Desk (Read only) gives read-only access to the Horizon Help Desk Tool and pool/session information. None of these lets the role create or delete pools (Manage Farms and Desktop and Application Pools), change global configuration (Manage Global Configuration and Policies) or manage roles (Manage Roles and Permissions). Source: Omnissa Horizon 8 Administration, 'Object-Specific Privileges' and 'Privileges for Managing Sessions and Global Sessions'.
- 12
A global organization has two separate Horizon pods, one in New York and one in London. They want to implement a solution that allows users to connect to a single global namespace (e.g.,
desktops.company.com) and be directed to their entitled desktop in their home site. The solution must also provide site affinity and failover capabilities if one site becomes unavailable. Which Horizon feature should be implemented to meet these requirements?Show answer details
Correct answer: C
Cloud Pod Architecture (CPA) links multiple pods into a pod federation with global entitlements. The Global Data Layer is replicated to every Connection Server, so any pod knows a user's entitlements and home site, and the VIPA channel lets the connecting pod launch or find sessions in other pods. Home sites steer users to their home datacenter, and when a site is unavailable the scope policy lets desktops be allocated from the other site. A global load balancer is normally placed in front of the pods to give users a single namespace URL, but on its own it has no entitlement or home-site awareness; CPA is the Horizon feature that meets the requirement. (Omnissa Horizon Cloud Pod Architecture guide.)
