Quick Answer
The answer is to verify the boot image is set to x64 UEFI. This is required because UEFI firmware with Secure Boot cannot use legacy BIOS boot images; it demands a 64-bit UEFI boot environment to properly initialize the deployment and support GPT disk partitioning, both mandatory for Windows 11. On the MD-102 exam, this scenario tests your understanding of how MDT boot images interact with modern hardware, often appearing as a troubleshooting question where devices fail to boot post-deployment. A common trap is selecting a BIOS-based boot image for UEFI systems, which causes immediate boot failure. Remember the rule: UEFI equals x64—if Secure Boot is on, the boot image must be 64-bit UEFI, or the device won’t even start.
This MD-102 practice question tests your understanding of deploy windows client. 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.
A company plans to deploy Windows 11 to 500 devices using Microsoft Deployment Toolkit (MDT). The deployment must support UEFI-based devices with Secure Boot enabled. During a pilot deployment, several devices fail to boot after deployment. You suspect the issue is related to the boot image configuration. Which boot image setting should you verify?
Ensure the boot image is set to x64 BIOS
Why wrong: x64 BIOS is for BIOS-based systems, not UEFI.
Ensure the boot image is set to x86 BIOS
Why wrong: x86 BIOS is for legacy BIOS, not UEFI.
Ensure the boot image includes the WinPE optional component for Secure Boot
Why wrong: Secure Boot support is built into WinPE for UEFI; no separate component needed.
Ensure the boot image is set to x64 UEFI
x64 UEFI is required for UEFI and Secure Boot.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Ensure the boot image is set to x64 UEFI
UEFI-based devices with Secure Boot require a 64-bit boot image because UEFI firmware does not support legacy BIOS boot modes. Selecting an x64 UEFI boot image ensures the deployment environment is compatible with Secure Boot and GPT disk partitioning, which are mandatory for Windows 11 on UEFI systems. An incorrect boot image type (e.g., BIOS-based) will cause boot failures on UEFI-only hardware.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Ensure the boot image is set to x64 BIOS
Why it's wrong here
x64 BIOS is for BIOS-based systems, not UEFI.
Ensure the boot image is set to x86 BIOS
Why it's wrong here
x86 BIOS is for legacy BIOS, not UEFI.
Ensure the boot image includes the WinPE optional component for Secure Boot
Why it's wrong here
Secure Boot support is built into WinPE for UEFI; no separate component needed.
Ensure the boot image is set to x64 UEFI
Why this is correct
x64 UEFI is required for UEFI and Secure Boot.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates confuse the need for a Secure Boot-specific WinPE component (Option C) with the actual requirement of selecting the correct boot image architecture and firmware type (x64 UEFI), leading them to overlook that Secure Boot support is inherent to the UEFI boot image, not an add-on component.
Detailed technical explanation
Under the hood, UEFI firmware uses the EFI boot manager and requires a boot image with an EFI boot stub (bootmgfw.efi) rather than a BIOS boot sector. In MDT, the boot image type is selected in the Deployment Workbench under 'Boot Images' — choosing 'x64 UEFI' generates a WinPE image that includes the necessary EFI boot files and Secure Boot-compatible boot loader. A real-world scenario: deploying to Surface Pro devices (UEFI-only) with an x64 BIOS boot image will result in a 'No bootable device' error because the firmware cannot recognize the legacy MBR boot structure.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
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FAQ
Deploy Windows client — This question tests Deploy Windows client — Read the scenario before looking for a memorised answer..
The correct answer is: Ensure the boot image is set to x64 UEFI — UEFI-based devices with Secure Boot require a 64-bit boot image because UEFI firmware does not support legacy BIOS boot modes. Selecting an x64 UEFI boot image ensures the deployment environment is compatible with Secure Boot and GPT disk partitioning, which are mandatory for Windows 11 on UEFI systems. An incorrect boot image type (e.g., BIOS-based) will cause boot failures on UEFI-only hardware.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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