The answer is Public Key Infrastructure (PKI) and Microsoft Entra ID Connect. In a hybrid deployment, Windows Hello for Business requires PKI to issue and manage the certificate-based authentication keys that on-premises domain controllers must trust for user sign-in, while Microsoft Entra ID Connect synchronizes user credentials from on-premises Active Directory to Microsoft Entra ID, enabling seamless authentication against both local and cloud resources. On the MD-102 exam, this question tests your understanding of the hybrid trust model, where the on-premises environment remains authoritative; a common trap is selecting Azure MFA or Intune, which are supporting but not core requirements. Remember the two pillars: sync (Entra ID Connect) and trust (PKI) — without both, hybrid Hello cannot function.
MD-102 Prepare infrastructure for devices Practice Question
This MD-102 practice question tests your understanding of prepare infrastructure for devices. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO are required to enable Windows Hello for Business in a hybrid deployment? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Entra ID Connect
In a hybrid deployment, Windows Hello for Business requires synchronization of user credentials from on-premises Active Directory to Microsoft Entra ID. Microsoft Entra ID Connect (B) provides this synchronization, enabling the device to authenticate against both on-premises and cloud resources. Additionally, a Public Key Infrastructure (PKI) (C) is required to issue the certificate-based authentication keys used by Windows Hello for Business in hybrid deployments, as the on-premises domain controllers must trust the certificates.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Configuration Manager
Why it's wrong here
Not required for hybrid Windows Hello for Business.
✓
Microsoft Entra ID Connect
Why this is correct
Synchronizes on-premises AD with Microsoft Entra ID.
Related concept
Read the scenario before looking for a memorised answer.
✓
Public Key Infrastructure (PKI)
Why this is correct
Required for issuing certificates for Windows Hello for Business.
Related concept
Read the scenario before looking for a memorised answer.
Intune can deliver policy but is not strictly required; Group Policy can be used.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse prerequisites (like MFA) with required infrastructure components, leading them to select MFA instead of recognizing that PKI and directory synchronization are the two mandatory elements for hybrid deployments.
Detailed technical explanation
How to think about this question
In a hybrid deployment, Windows Hello for Business uses a key trust or certificate trust model. The PKI issues domain-joined device certificates that are used during the provisioning process to authenticate the user to the on-premises domain controller via Kerberos. Microsoft Entra ID Connect synchronizes the user's public key to Azure AD, enabling seamless single sign-on to cloud resources without requiring a password. A subtle behavior is that the PKI must be configured with specific certificate templates (e.g., 'Domain Controller Authentication' and 'Workstation Authentication') and the issuing CA must be trusted by both the on-premises domain and Azure AD.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MD-102 question in full detail.
Prepare infrastructure for devices — This question tests Prepare infrastructure for devices — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Entra ID Connect — In a hybrid deployment, Windows Hello for Business requires synchronization of user credentials from on-premises Active Directory to Microsoft Entra ID. Microsoft Entra ID Connect (B) provides this synchronization, enabling the device to authenticate against both on-premises and cloud resources. Additionally, a Public Key Infrastructure (PKI) (C) is required to issue the certificate-based authentication keys used by Windows Hello for Business in hybrid deployments, as the on-premises domain controllers must trust the certificates.
What should I do if I get this MD-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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