The answer is the conference room’s thick walls or electronic interference, which weaken the wireless signal. This is correct because physical obstacles like concrete, metal studs, or dense drywall absorb and reflect radio waves, while nearby electronics can emit electromagnetic noise that disrupts the signal’s integrity. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of wireless signal propagation and common interference sources—a frequent trap is blaming the access point or client device instead of the environment. Remember that signal strength degrades with distance and obstacles, so a room with heavy construction or equipment is a classic trouble spot. A handy memory tip: “Walls and watts weaken waves”—thick walls and electrical interference are the top culprits for spotty coverage in specific areas.
220-1101 Common Networking Hardware Practice Question
This 220-1201 practice question tests your understanding of common networking hardware. 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 user complains that their wireless connection drops frequently, but only when they are in the conference room. Other areas of the office have stable connections. 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
✓
The conference room has thick walls or electronic interference that weakens the signal.
This question tests understanding of wireless interference and signal propagation. Physical obstacles like metal studs or electronic interference can weaken signals. The conference room's environment is the key factor.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
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 user's laptop has a faulty wireless adapter.
Why it's wrong here
If the adapter were faulty, the issue would occur everywhere, not just in the conference room.
✗
The access point is overloaded with too many connections.
Why it's wrong here
An overloaded AP would affect all users, not just one room. The issue is location-specific.
✓
The conference room has thick walls or electronic interference that weakens the signal.
Why this is correct
Correct. Physical obstructions like concrete or metal, or interference from electronics, can cause signal degradation in specific areas.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Outdated firmware would cause issues throughout the coverage area, not just in one room.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
OSPF neighbours must agree on key parameters.
Router ID selection can affect neighbour relationships and LSDB output.
OSPF cost influences the preferred path.
A route can appear in OSPF information but not become the installed route.
TExam Day Tips
→Check area mismatch first when OSPF adjacency fails.
→Review passive interfaces when a network is advertised but no neighbour forms.
→Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 220-1201 OSPF questions on adjacency and route selection.
Common Networking Hardware — This question tests Common Networking Hardware — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: The conference room has thick walls or electronic interference that weakens the signal. — This question tests understanding of wireless interference and signal propagation. Physical obstacles like metal studs or electronic interference can weaken signals. The conference room's environment is the key factor.
What should I do if I get this 220-1201 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 220-1201 OSPF questions on adjacency and route selection.
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?
OSPF neighbours must agree on key parameters.
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 →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A customer complains that their wireless network is slow and frequently drops connections. They live in a densely populated apartment building. The technician checks the wireless router and sees it is using channel 1. What is the most likely cause of the issue?
medium
A.The router is too far from the devices
B.The router's firmware is outdated
✓ C.There is interference from other wireless networks on the same channel
D.The router is using 5 GHz instead of 2.4 GHz
Why C: In a dense area, overlapping Wi-Fi channels cause interference. Channel 1 is commonly used, but if neighboring networks are also on channel 1 or 6, it can cause congestion. The correct answer is co-channel interference from neighboring networks. The technician should use a Wi-Fi analyzer to find a less congested channel.
Last reviewed: Jun 18, 2026
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