Question 38 of 1,020

Mobile Device Network Connectivity →easyMultiple ChoiceObjective-mapped

Troubleshooting Wi-Fi Dead Zones in Buildings

This 220-1201 practice question tests your understanding of mobile device network connectivity. 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 user complains that their smartphone frequently disconnects from the office Wi-Fi and then reconnects after a few seconds. The issue occurs only when the user walks to a specific part of the building. 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.

A
The smartphone's battery saver mode is turning off Wi-Fi.
Why wrong: Battery saver typically reduces performance but does not cause brief disconnections only in specific locations.
B
The office access point is overloaded with too many connections.
Why wrong: An overloaded AP would affect all users in the area, not just one user in a specific location.
C
The smartphone is encountering a Wi-Fi dead zone due to building materials.
Building materials such as concrete or metal can create dead zones where the signal is too weak, causing intermittent disconnections.
D
The smartphone's Wi-Fi antenna is loose.
Why wrong: A loose antenna would cause general connectivity issues everywhere, not just in one specific location.

Full breakdown with real-world context →

Quick Answer

The answer is a Wi-Fi dead zone caused by building materials. This is the most likely cause because radio frequency (RF) signals, particularly the 2.4 GHz and 5 GHz bands used by Wi-Fi, are significantly attenuated by dense construction materials such as concrete, steel beams, metal studs, and brick walls. When the user walks into a specific part of the building, these materials block or weaken the signal below the threshold needed to maintain a stable connection, causing the smartphone to disconnect and then quickly reconnect once the user moves back into range. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of wireless signal propagation and environmental interference—a common trap is to blame the access point’s channel congestion or the device’s power settings, but the key clue is the issue occurring only in one physical location. A helpful memory tip: think of Wi-Fi like a flashlight—it works great in open space, but a concrete wall is like a solid brick wall to the beam, creating a dead zone on the other side.

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

✓

The smartphone is encountering a Wi-Fi dead zone due to building materials.

The issue occurs only when the user walks to a specific part of the building, which strongly indicates a physical obstruction or signal absorption by building materials (e.g., concrete, metal studs, or rebar). Wi-Fi signals in the 2.4 GHz and 5 GHz bands attenuate significantly when passing through dense materials, creating localized dead zones where the client device loses connectivity and then reconnects upon moving back into range. This matches the symptom of frequent disconnects and reconnects tied to a specific location.

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 smartphone's battery saver mode is turning off Wi-Fi.
Why it's wrong here
Battery saver typically reduces performance but does not cause brief disconnections only in specific locations.
✗
The office access point is overloaded with too many connections.
Why it's wrong here
An overloaded AP would affect all users in the area, not just one user in a specific location.
✓
The smartphone is encountering a Wi-Fi dead zone due to building materials.
Why this is correct
Building materials such as concrete or metal can create dead zones where the signal is too weak, causing intermittent 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 smartphone's Wi-Fi antenna is loose.
Why it's wrong here
A loose antenna would cause general connectivity issues everywhere, not just in one specific location.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The 220-1201 exam often tests the concept that location-specific Wi-Fi issues are almost always due to physical obstructions or dead zones, not device-specific hardware faults or network-wide overload, which are common distractors.

Detailed technical explanation

How to think about this question

Wi-Fi dead zones are often caused by multipath interference or signal absorption from materials like concrete, metal studs, or water pipes. The 5 GHz band is more susceptible to attenuation than 2.4 GHz, so a device may roam to a farther access point or drop the connection entirely when signal strength falls below the receiver sensitivity threshold (typically around -80 dBm to -90 dBm). In enterprise environments, this is mitigated by conducting a site survey to map coverage and adjusting AP placement or channel power.

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.

TExam Day Tips

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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Related 220-1201 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Mobile Device Hardware Servicing practice questions

Practise 220-1201 questions linked to Mobile Device Hardware Servicing.

Mobile Device Connection Methods practice questions

Practise 220-1201 questions linked to Mobile Device Connection Methods.

Mobile Device Accessories practice questions

Practise 220-1201 questions linked to Mobile Device Accessories.

Mobile Device Network Connectivity practice questions

Practise 220-1201 questions linked to Mobile Device Network Connectivity.

Mobile Device Application Support practice questions

Practise 220-1201 questions linked to Mobile Device Application Support.

Network Protocols practice questions

Practise 220-1201 questions linked to Network Protocols.

TCP & UDP Ports practice questions

Practise 220-1201 questions linked to TCP & UDP Ports.

Wireless Networking Technologies practice questions

Practise 220-1201 questions linked to Wireless Networking Technologies.

Network Services practice questions

Practise 220-1201 questions linked to Network Services.

Network Configuration Concepts practice questions

Practise 220-1201 questions linked to Network Configuration Concepts.

Common Networking Hardware practice questions

Practise 220-1201 questions linked to Common Networking Hardware.

IP Addressing practice questions

Practise 220-1201 questions linked to IP Addressing.

Practice this exam

Start a free 220-1201 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

220-1201 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this 220-1201 question test?

Mobile Device Network Connectivity — This question tests Mobile Device Network Connectivity — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The smartphone is encountering a Wi-Fi dead zone due to building materials. — The issue occurs only when the user walks to a specific part of the building, which strongly indicates a physical obstruction or signal absorption by building materials (e.g., concrete, metal studs, or rebar). Wi-Fi signals in the 2.4 GHz and 5 GHz bands attenuate significantly when passing through dense materials, creating localized dead zones where the client device loses connectivity and then reconnects upon moving back into range. This matches the symptom of frequent disconnects and reconnects tied to a specific location.

What should I do if I get this 220-1201 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Keep practising

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

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.