The best solution is to update the iPhone to iOS 16 or later. This is correct because the app crashes immediately on launch due to iOS version incompatibility—the app’s system requirements specify iOS 16 or newer, and the device is running iOS 15, which lacks the APIs and frameworks the app depends on to function. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of mobile operating system compatibility and the troubleshooting step of verifying system requirements before installation. A common trap is to assume a reinstall or reboot will fix the crash, but those won’t resolve a fundamental version mismatch. Remember the memory tip: “Check the version before the session”—always confirm the OS version meets the app’s minimum requirements before attempting other fixes. If the iPhone model cannot support iOS 16, the app simply cannot be used, reinforcing that hardware limitations can also dictate software compatibility.
220-1201 Mobile Device Application Support Practice Question
This 220-1201 practice question tests your understanding of mobile device application support. 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 customer brings in an iPhone that is running iOS 15 and complains that a newly released app crashes immediately upon launch. The app requires iOS 16 or later. What is the best solution?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Update the iPhone to iOS 16 or later.
This question focuses on app compatibility with mobile operating systems. Since the app requires a newer iOS version, the only viable solution is to update the device to iOS 16 if supported. If the iPhone model cannot support iOS 16, the app cannot be used. This highlights the importance of checking system requirements before installation.
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.
✗
Reinstall the app from the App Store.
Why it's wrong here
Reinstalling will not change the OS version requirement; the app will still crash.
✓
Update the iPhone to iOS 16 or later.
Why this is correct
Updating the OS to meet the app's minimum requirement resolves the compatibility issue.
Clue confirmation
The clue words "best", "immediately / without restart" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Restart the iPhone to clear temporary files.
Why it's wrong here
Restarting does not change the OS version and will not make the app compatible.
✗
Download an older version of the app from a third-party site.
Why it's wrong here
Downloading apps from unofficial sources is unsafe and violates Apple's security policies; also, older versions may not be available.
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 220-1201 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 Application Support — This question tests Mobile Device Application Support — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Update the iPhone to iOS 16 or later. — This question focuses on app compatibility with mobile operating systems. Since the app requires a newer iOS version, the only viable solution is to update the device to iOS 16 if supported. If the iPhone model cannot support iOS 16, the app cannot be used. This highlights the importance of checking system requirements before installation.
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: "best", "immediately / without restart". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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 →
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.
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.
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.
Sign in to join the discussion.