- A
Disable Secure Boot
Secure Boot can prevent booting from unsigned media like many diagnostic USBs.
- B
Enable Fast Boot
Why wrong: Fast Boot speeds up boot by skipping some checks but does not block USB boot.
- C
Set SATA mode to RAID
Why wrong: SATA mode affects storage, not boot device selection.
- D
Disable the TPM
Why wrong: TPM is for encryption and does not control boot devices.
Question 738 of 1,020
Why Secure Boot Prevents USB Booting and How to Fix It
This 220-1201 practice question tests your understanding of bios / uefi. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 technician needs to boot a laptop from a USB drive to run a diagnostic tool. The USB is plugged in but the system skips it and boots from the internal SSD. Which UEFI setting is most likely preventing the USB boot?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Quick Answer
The answer is to disable Secure Boot in the UEFI settings. When Secure Boot is enabled, the system only allows booting from software that has a valid digital signature recognized by the firmware, and many USB diagnostic tools or bootable drives lack this signature, causing the system to skip the USB and boot from the internal SSD instead. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of UEFI boot security and boot order configuration—a common trap is that technicians first check the boot order, but the real issue is often Secure Boot blocking unsigned media. Remember, if your USB boot is not working and Secure Boot is enabled, the fix is to disable Secure Boot temporarily, then re-enable it after diagnostics. A helpful memory tip: "Secure Boot signs the line, so unsigned drives won't shine."
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
✓
Disable Secure Boot
If Secure Boot is enabled and the USB is not signed or UEFI-bootable, the system may ignore it. Alternatively, the boot order may not include USB. This tests understanding of boot security and order settings.
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.
- ✓
Disable Secure Boot
Why this is correct
Secure Boot can prevent booting from unsigned media like many diagnostic USBs.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable Fast Boot
Why it's wrong here
Fast Boot speeds up boot by skipping some checks but does not block USB boot.
- ✗
Set SATA mode to RAID
Why it's wrong here
SATA mode affects storage, not boot device selection.
- ✗
Disable the TPM
Why it's wrong here
TPM is for encryption and does not control boot devices.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 practitioner preparing for the 220-1201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
- →
BIOS / UEFI — study guide chapter
Learn the concepts, then practise the questions
- →
BIOS / UEFI practice questions
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All 220-1201 questions
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CompTIA A+ Core 1 220-1201 study guide
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220-1201 practice test guide
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FAQ
Questions learners often ask
What does this 220-1201 question test?
BIOS / UEFI — This question tests BIOS / UEFI — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Disable Secure Boot — If Secure Boot is enabled and the USB is not signed or UEFI-bootable, the system may ignore it. Alternatively, the boot order may not include USB. This tests understanding of boot security and order settings.
What should I do if I get this 220-1201 question wrong?
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 18, 2026
This 220-1201 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 220-1201 exam.
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