1Y0-204 App and Desktop Image Management Practice Question
An administrator is using Machine Creation Services (MCS) to create a pooled-random desktop catalog. After the catalog is created, the administrator needs to update the master image with a new version of an application. What is the correct sequence of steps to update the catalog with minimal downtime?
⚠ Common exam trap
The trap here is assuming that restarting desktops or recreating the catalog is necessary, when actually the built-in update wizard handles the process efficiently.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Update the master image, take a new snapshot, and then use the 'Update Machines' wizard in Citrix Studio to roll out the update.
The correct process for updating an MCS catalog is to update the master image, take a snapshot, and then use the 'Update Machines' wizard in Citrix Studio. This wizard re-provisions the existing machines with the new image, optionally in batches to reduce downtime. Other methods are either ineffective or disruptive.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Update the master image, take a new snapshot, and then use the 'Update Machines' wizard in Citrix Studio to roll out the update.
Why this is correct
This is the standard procedure for updating an MCS catalog. After updating the master image and taking a snapshot, the administrator uses the 'Update Machines' wizard in Citrix Studio to apply the new image to the catalog. This can be done in batches to minimize downtime.
- ✗
Delete the existing catalog and create a new one from the updated master image.
Why it's wrong here
Deleting and recreating the catalog would cause significant downtime and loss of user assignments and policies. This is not a recommended practice for updates. The 'Update Machines' wizard is designed to update the existing catalog without recreating it.
- ✗
Use the 'Update Machines' wizard to update the master image directly, without taking a snapshot.
Why it's wrong here
The 'Update Machines' wizard requires a snapshot of the updated master image. Without a snapshot, there is no new image to deploy. The wizard does not modify the master image; it deploys a snapshot to the catalog.
- ✗
Update the master image, then restart all desktops in the catalog to apply the changes.
Why it's wrong here
Simply restarting desktops does not apply changes to the master image. The desktops are clones of the original snapshot; they do not automatically pick up changes from the master image. A catalog update process is required to re-provision the clones.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Citrix exam blueprint
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