The answer is co-channel interference between Wi-Fi and Bluetooth on the 2.4 GHz band. This happens because both technologies share the same unlicensed frequency spectrum, and when a Wi-Fi network is heavily active, its signal can drown out or disrupt Bluetooth’s frequency-hopping transmissions, causing the connection to drop. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of wireless coexistence issues—a common troubleshooting objective where devices like tablets lose Bluetooth sync under heavy Wi-Fi load. A frequent trap is assuming a hardware defect or driver problem, but the real culprit is spectrum congestion. To remember this, think of the 2.4 GHz band as a crowded highway: Wi-Fi is a large truck taking up multiple lanes, while Bluetooth is a small car trying to weave through—when the truck dominates, the car gets blocked. The fix is moving Wi-Fi to the 5 GHz band or leveraging Bluetooth 5’s enhanced co-existence features.
220-1201 Mobile Device Connection Methods Practice Question
This 220-1201 practice question tests your understanding of mobile device connection methods. 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 deploys tablets for inventory management. The tablets need to connect to a Bluetooth barcode scanner and also sync data to a cloud server over Wi-Fi. The Bluetooth connection drops every few minutes. What is the most likely cause?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Wi-Fi and Bluetooth are interfering because both use the 2.4 GHz band.
Co-channel interference between Bluetooth and Wi-Fi on the 2.4 GHz band is a common issue. If the Wi-Fi network is heavily used, it can disrupt Bluetooth. Changing Wi-Fi to 5 GHz or using Bluetooth 5's enhanced features can help.
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.
✗
The barcode scanner's battery is low.
Why it's wrong here
Low battery might cause scanner failure, but intermittent drops suggest interference, not power.
✗
The tablets are too far from the barcode scanner.
Why it's wrong here
Range issues would cause complete disconnection, not frequent drops.
✓
Wi-Fi and Bluetooth are interfering because both use the 2.4 GHz band.
Why this is correct
Both operate in the same frequency; heavy Wi-Fi traffic can cause Bluetooth packet loss and disconnections.
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.
✗
The cloud server is not responding to sync requests.
Why it's wrong here
Server issues would affect data sync, not Bluetooth connectivity.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
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.
Mobile Device Connection Methods — This question tests Mobile Device Connection Methods — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Wi-Fi and Bluetooth are interfering because both use the 2.4 GHz band. — Co-channel interference between Bluetooth and Wi-Fi on the 2.4 GHz band is a common issue. If the Wi-Fi network is heavily used, it can disrupt Bluetooth. Changing Wi-Fi to 5 GHz or using Bluetooth 5's enhanced features can help.
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.
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Question Discussion
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