- A
The earbuds have a low battery.
Why wrong: Low battery could cause disconnections, but since the earbuds work fine with another phone, the battery is not the issue.
- B
The smartphone's Bluetooth driver is outdated.
Why wrong: While outdated drivers can cause issues, disconnections specifically in a conference room suggest environmental interference rather than a driver problem.
- C
Bluetooth interference from other devices in the conference room.
Conference rooms often have many wireless devices (phones, laptops, projectors) that can cause Bluetooth interference, leading to frequent disconnections.
- D
The earbuds are not compatible with the smartphone's Bluetooth version.
Why wrong: Bluetooth is backward compatible, so version mismatch would not cause intermittent disconnections; it would either work or not pair at all.
220-1201 Mobile Device Accessories Practice Question
This 220-1201 practice question tests your understanding of mobile device accessories. 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.
During a conference call, a user complains that their wireless earbuds keep disconnecting from their smartphone every few minutes. The earbuds work fine when paired with a different phone. 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 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
Bluetooth interference from other devices in the conference room.
When an accessory works with one device but not another, the issue is likely with the original device's Bluetooth configuration or interference. Interference from other devices or a poor Bluetooth antenna in the phone are common causes. The correct answer is Bluetooth interference from other devices in the conference room.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 earbuds have a low battery.
Why it's wrong here
Low battery could cause disconnections, but since the earbuds work fine with another phone, the battery is not the issue.
- ✗
The smartphone's Bluetooth driver is outdated.
Why it's wrong here
While outdated drivers can cause issues, disconnections specifically in a conference room suggest environmental interference rather than a driver problem.
- ✓
Bluetooth interference from other devices in the conference room.
Why this is correct
Conference rooms often have many wireless devices (phones, laptops, projectors) that can cause Bluetooth interference, leading to frequent disconnections.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
The earbuds are not compatible with the smartphone's Bluetooth version.
Why it's wrong here
Bluetooth is backward compatible, so version mismatch would not cause intermittent disconnections; it would either work or not pair at all.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
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Mobile Device Accessories — study guide chapter
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FAQ
Questions learners often ask
What does this 220-1201 question test?
Mobile Device Accessories — This question tests Mobile Device Accessories — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Bluetooth interference from other devices in the conference room. — When an accessory works with one device but not another, the issue is likely with the original device's Bluetooth configuration or interference. Interference from other devices or a poor Bluetooth antenna in the phone are common causes. The correct answer is Bluetooth interference from other devices in the conference room.
What should I do if I get this 220-1201 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
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?
Static NAT maps one inside address to one outside address.
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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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