220-1102 Operating Systems Practice Question
A technician is troubleshooting a Windows 10 workstation that fails to boot. The technician suspects a problem with the boot configuration data (BCD). Which two commands can be used to rebuild the BCD? (Choose two.)
⚠ Common exam trap
Many exam-takers confuse bootrec /fixboot or /fixmbr with BCD repair, when they address different boot components.
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
✓
bootrec /rebuildbcd
The two commands that rebuild the BCD are bootrec /rebuildbcd and bcdboot. bootrec /rebuildbcd scans for Windows installations and rebuilds the BCD store, while bcdboot creates or repairs the BCD and boot files from a specified Windows directory. The other commands either back up, fix the boot sector, or fix the MBR, but do not rebuild the BCD.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
bootrec /fixboot
Why it's wrong here
bootrec /fixboot writes a new boot sector to the system partition. It does not rebuild the BCD. It is used when the boot sector is corrupted or missing, but it does not address BCD corruption. Thus, it is not a correct answer for rebuilding the BCD.
- ✗
bootrec /fixmbr
Why it's wrong here
bootrec /fixmbr writes a new master boot record to the system partition. It repairs the MBR but does not touch the BCD. It is used for MBR corruption, not BCD issues. Therefore, it is not a correct answer for rebuilding the BCD.
- ✓
bootrec /rebuildbcd
Why this is correct
bootrec /rebuildbcd scans the disk for Windows installations and allows you to select which ones to add to the BCD store. It is a standard command in the Windows Recovery Environment to repair boot issues. This command directly addresses rebuilding the BCD, making it a correct choice.
- ✗
bcdedit /export
Why it's wrong here
bcdedit /export backs up the BCD store to a file. It does not rebuild or repair the BCD. While it is useful for backup before making changes, it does not resolve a corrupted BCD. Therefore, it is not a correct answer for rebuilding.
- ✓
bcdboot C:\Windows
Why this is correct
bcdboot is a command-line tool that creates or repairs the BCD store and copies boot files. Running bcdboot C:\Windows rebuilds the BCD from the specified Windows directory. It is a valid method to rebuild the BCD, especially when the BCD is missing or corrupted. This makes it a correct choice.
Go deeper
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Key term
Windows
Windows is a family of operating systems developed by Microsoft that manages computer hardware and software, providing a graphical user interface for users to interact with their devices.
Key term
Windows 10
Windows 10 is a personal computer operating system developed by Microsoft that combines the familiarity of Windows 7 with the modern features of Windows 8, designed to run on a wide range of devices from desktops to tablets.
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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 CompTIA exam blueprint
This 220-1202 practice question is part of Courseiva's free CompTIA 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 220-1202 exam.