The answer is to disable Data Roaming in the mobile network settings while leaving voice roaming enabled. This configuration is correct because Android separates data roaming from voice and SMS roaming; turning off only the data toggle prevents the phone from using cellular data on foreign networks, which is the primary source of high charges, while still allowing calls and texts over partner networks. On the CompTIA A+ Core 2 220-1202 exam, this question tests your understanding of Android connectivity settings and the common trap is confusing "Roaming" (which covers all services) with "Data Roaming" (which covers only mobile data). A useful memory tip is to think of it as "Data off, voice on"—you want to keep the phone connected for basic communication but block the expensive data pipe.
220-1102 Mobile OS Features and Tools Practice Question
This 220-1202 practice question tests your understanding of mobile os features and tools. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 technician is configuring an Android phone for a user who frequently travels internationally. The user wants to ensure that data roaming is disabled to avoid high charges, but still wants to receive calls and texts while abroad. Which setting should the technician configure?
Why wrong: Airplane Mode disables all cellular radios, preventing calls and texts, which is not what the user wants.
B
Disable Mobile Data entirely.
Why wrong: Disabling Mobile Data stops all data usage, but the user may still want MMS or other data services; the question specifies only data roaming.
C
Turn off Data Roaming in the mobile network settings.
Data Roaming specifically controls cellular data while roaming; turning it off prevents data charges while voice and SMS still work.
D
Set the network mode to 2G only.
Why wrong: Setting to 2G only limits network speed but does not disable data roaming; data could still be used and incur charges.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Turn off Data Roaming in the mobile network settings.
This question tests Android connectivity settings. The correct answer is to disable 'Data Roaming' while keeping 'Roaming' enabled for voice and SMS. This allows calls and texts over partner networks without using mobile data, preventing unexpected charges.
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.
✗
Enable Airplane Mode and turn on Wi-Fi.
Why it's wrong here
Airplane Mode disables all cellular radios, preventing calls and texts, which is not what the user wants.
✗
Disable Mobile Data entirely.
Why it's wrong here
Disabling Mobile Data stops all data usage, but the user may still want MMS or other data services; the question specifies only data roaming.
✓
Turn off Data Roaming in the mobile network settings.
Why this is correct
Data Roaming specifically controls cellular data while roaming; turning it off prevents data charges while voice and SMS still work.
Related concept
Static NAT maps one inside address to one outside address.
✗
Set the network mode to 2G only.
Why it's wrong here
Setting to 2G only limits network speed but does not disable data roaming; data could still be used and incur charges.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1202 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 220-1202 NAT questions on configuration and troubleshooting.
Mobile OS Features and Tools — This question tests Mobile OS Features and Tools — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Turn off Data Roaming in the mobile network settings. — This question tests Android connectivity settings. The correct answer is to disable 'Data Roaming' while keeping 'Roaming' enabled for voice and SMS. This allows calls and texts over partner networks without using mobile data, preventing unexpected charges.
What should I do if I get this 220-1202 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 220-1202 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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