220-1101 Mobile Device Network Connectivity Practice Question
This 220-1201 practice question tests your understanding of mobile device network connectivity. 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's smartphone intermittently disconnects from a known Wi-Fi network when they move to a different room. The network uses a single access point. 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 smartphone is connecting to the 5 GHz band, which has poor wall penetration.
This tests understanding of Wi-Fi signal propagation. 5 GHz signals attenuate quickly through walls and obstacles, causing disconnections when moving away from the access point, while 2.4 GHz has better range.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 is connecting to the 5 GHz band, which has poor wall penetration.
Why this is correct
5 GHz has shorter range and is more easily blocked by walls, leading to intermittent disconnects when moving rooms.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
The access point is overloaded with too many clients.
Why it's wrong here
Overload would affect all clients, not just one device moving rooms.
✗
The smartphone's MAC address is being filtered.
Why it's wrong here
MAC filtering would block the device entirely, not cause intermittent disconnects.
✗
The smartphone's battery saver mode is turning off Wi-Fi.
Why it's wrong here
Battery saver might disable Wi-Fi, but it would not be triggered by moving rooms.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 220-1201 ACL questions on filtering logic and placement.
Mobile Device Network Connectivity — This question tests Mobile Device Network Connectivity — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The smartphone is connecting to the 5 GHz band, which has poor wall penetration. — This tests understanding of Wi-Fi signal propagation. 5 GHz signals attenuate quickly through walls and obstacles, causing disconnections when moving away from the access point, while 2.4 GHz has better range.
What should I do if I get this 220-1201 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 220-1201 ACL questions on filtering logic and placement.
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?
Standard ACLs match source addresses.
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Question Discussion
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