- A
The email server is blocking attachments.
Why wrong: Incorrect. A server-side block would affect all users, not just one app on one device.
- B
The email app's cache or data is corrupted.
Correct. Clearing the app's cache or data often resolves crashes caused by corrupted temporary files.
- C
The phone's operating system needs to be updated.
Why wrong: Incorrect. An OS update is unlikely to fix a single app crash without broader symptoms.
- D
The attachment is too large for the phone to handle.
Why wrong: Incorrect. If size were the issue, the app would likely show an error message, not crash.
Question 809 of 1,020
Android Email App Crashes When Opening Attachment
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 reports that their Android phone's email app crashes whenever they try to open an attachment from a work email. The app worked fine last week. What is the most likely cause of this 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.
Quick Answer
The answer is a corrupted email app cache or data, as this is the most likely cause when an Android email app crashes while opening an attachment after previously working fine. App data or cache files can become corrupted over time due to incomplete updates, storage errors, or conflicting background processes, which disrupts the app’s ability to render attachments without crashing. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of common mobile app troubleshooting, specifically distinguishing between software corruption and hardware or network failures. A common trap is to suspect the attachment itself or a server issue, but because the problem is app-wide and recent, clearing the app’s cache or data in Settings is the first logical step before reinstalling. Remember the memory tip: “Cache crash, clear first”—if an app worked yesterday but fails today, suspect local corruption, not the file.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The email app's cache or data is corrupted.
The most likely cause is that the email app's cache or data has become corrupted. This corruption can prevent the app from properly processing attachments, even though it worked previously. Clearing the app's cache or data typically resolves such crashes without affecting the email server or requiring an OS update.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 email server is blocking attachments.
Why it's wrong here
Incorrect. A server-side block would affect all users, not just one app on one device.
- ✓
The email app's cache or data is corrupted.
Why this is correct
Correct. Clearing the app's cache or data often resolves crashes caused by corrupted temporary files.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The phone's operating system needs to be updated.
Why it's wrong here
Incorrect. An OS update is unlikely to fix a single app crash without broader symptoms.
- ✗
The attachment is too large for the phone to handle.
Why it's wrong here
Incorrect. If size were the issue, the app would likely show an error message, not crash.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the distinction between server-side issues (like blocking attachments) and client-side corruption, where candidates mistakenly assume a server problem when the app crashes locally.
Trap categories for this question
Command / output trap
Incorrect. If size were the issue, the app would likely show an error message, not crash.
Detailed technical explanation
How to think about this question
Email apps on Android store attachment data in a local cache to speed up access. If this cache becomes corrupted (e.g., due to a partial write or memory error), the app may attempt to read invalid data when opening an attachment, leading to a null pointer exception or segmentation fault that crashes the app. Clearing the cache via Settings > Apps > [Email App] > Storage > Clear Cache removes this corrupted data without deleting account settings or emails, often fixing the issue immediately.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 220-1201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Visual reference
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this 220-1201 question test?
Mobile Device Application Support — This question tests Mobile Device Application Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The email app's cache or data is corrupted. — The most likely cause is that the email app's cache or data has become corrupted. This corruption can prevent the app from properly processing attachments, even though it worked previously. Clearing the app's cache or data typically resolves such crashes without affecting the email server or requiring an OS update.
What should I do if I get this 220-1201 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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.
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