1Y0-312 Advanced Troubleshooting Practice Question
Which THREE conditions must be met for a VDA to successfully register with a Delivery Controller?
⚠ Common exam trap
Candidates often overlook time synchronization, failing to realize that Kerberos authentication—which Citrix relies on—will fail if the VDA and Controller clocks differ by more than five minutes.
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
✓
The VDA must be able to resolve the Controller's FQDN via DNS.
Successful VDA registration requires network reachability, valid authentication (via computer account trusts), and correct configuration. The VDA must be able to resolve the Controller's address, the time must be synchronized within five minutes to allow for secure Kerberos handshakes, and the computer account must be joined to the correct Active Directory domain to ensure the broker can verify the identity of the VDA.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The VDA must be able to resolve the Controller's FQDN via DNS.
Why this is correct
DNS resolution is the foundational requirement for the VDA to locate the Delivery Controller. If the VDA cannot resolve the FQDN to an IP address, the registration process cannot initiate, leading to a permanent unregistered state regardless of other configuration settings or network path accessibility.
- ✓
The VDA and Controller must have time synchronized within 5 minutes.
Why this is correct
Citrix uses Kerberos for secure communication between the VDA and the Delivery Controller. Kerberos authentication is highly sensitive to time drift, and if the clocks are offset by more than five minutes, the authentication handshake will fail, preventing the VDA from completing the registration process successfully.
- ✗
The VDA must have the Citrix Licensing client installed separately.
Why it's wrong here
The VDA does not require a separate licensing client installation. Licensing is handled by the Broker Service and the Licensing Server. The VDA simply needs to be configured with the address of the Licensing Server; it does not require additional standalone software components to function correctly.
- ✓
The VDA computer account must be joined to the Active Directory domain.
Why this is correct
Registration relies on Active Directory authentication to ensure the VDA is a trusted entity. If the computer account is missing from the domain or the trust relationship is broken, the broker will reject the registration attempt, as it cannot confirm the identity of the VDA machine.
- ✗
The user must be logged into the VDA during registration.
Why it's wrong here
VDA registration is a machine-level process that occurs as soon as the Citrix Desktop Service starts, typically before any user logon takes place. The presence or absence of a user session has no impact on the VDA's ability to communicate with the Delivery Controller and register successfully.
Visual reference
About these practice questions
This 1Y0-312 question is part of Courseiva's 186-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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
This 1Y0-312 practice question is part of Courseiva's free Citrix certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Y0-312 exam.