220-1201 Mobile Device Network Connectivity Practice Question
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's iPhone connects to a public Wi-Fi hotspot but cannot load any web pages. The Wi-Fi icon shows full signal. Other devices on the same network work fine. What is the most likely issue?
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.
Why wrong: DNS issues would affect all web browsing, but the portal itself might still load; however, the most common cause is the captive portal not being acknowledged.
B
The iPhone is not accepting the captive portal's terms and conditions.
Many public Wi-Fi networks require accepting terms via a web page; if the portal doesn't load or the user hasn't accepted, internet access is blocked.
C
The iPhone's Wi-Fi antenna is faulty.
Why wrong: A faulty antenna would show weak or no signal, not full signal.
D
The public Wi-Fi network is using an incompatible security protocol.
Why wrong: If the network were incompatible, the iPhone would not connect at all.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The iPhone is not accepting the captive portal's terms and conditions.
Public Wi-Fi often uses a captive portal that requires web authentication. If the portal page does not automatically appear, the user may need to open Safari or go to a non-HTTPS site to trigger it.
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 iPhone's DNS settings are misconfigured.
Why it's wrong here
DNS issues would affect all web browsing, but the portal itself might still load; however, the most common cause is the captive portal not being acknowledged.
✓
The iPhone is not accepting the captive portal's terms and conditions.
Why this is correct
Many public Wi-Fi networks require accepting terms via a web page; if the portal doesn't load or the user hasn't accepted, internet access is blocked.
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 iPhone's Wi-Fi antenna is faulty.
Why it's wrong here
A faulty antenna would show weak or no signal, not full signal.
✗
The public Wi-Fi network is using an incompatible security protocol.
Why it's wrong here
If the network were incompatible, the iPhone would not connect 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.
Trap categories for this question
Command / output trap
A faulty antenna would show weak or no signal, not full signal.
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.
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 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.
Mobile Device Network Connectivity — This question tests Mobile Device Network Connectivity — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The iPhone is not accepting the captive portal's terms and conditions. — Public Wi-Fi often uses a captive portal that requires web authentication. If the portal page does not automatically appear, the user may need to open Safari or go to a non-HTTPS site to trigger it.
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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