CHFI Mobile and Malware Forensics Practice Question
This CHFI practice question tests your understanding of mobile and malware forensics. 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.
During a mobile forensic examination of an iPhone, the examiner wants to acquire the most data possible, including deleted files and unallocated space. Which acquisition type should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Physical acquisition
Physical acquisition creates a bit-for-bit copy of the entire flash storage, including unallocated space and deleted file remnants. This is the only method that captures the raw NAND memory, allowing recovery of data from unallocated blocks and slack space that logical and file system acquisitions skip.
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.
✗
File system acquisition
Why it's wrong here
File system acquisition retrieves file system metadata but not raw unallocated space.
✗
Logical acquisition
Why it's wrong here
Logical acquisition only retrieves active files and does not capture deleted data or unallocated space.
✓
Physical acquisition
Why this is correct
Physical acquisition creates a bit-for-bit image of the device's storage, including deleted and unallocated areas.
Related concept
Read the scenario before looking for a memorised answer.
✗
Manual acquisition
Why it's wrong here
Manual acquisition involves visually inspecting the device and taking screenshots, which does not recover deleted data.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that logical acquisition (Option B) captures deleted data because it includes the iTunes backup, but backups exclude unallocated space and deleted file remnants.
Detailed technical explanation
How to think about this question
Physical acquisition on iPhones often requires bypassing iOS security features like the SEP (Secure Enclave Processor) and using advanced techniques such as JTAG or chip-off to read the raw NAND. Even with a physical image, unallocated space may be encrypted or wear-leveled, making recovery of deleted files challenging but possible with specialized tools like Cellebrite or UFED. In real-world cases, physical acquisition is critical for recovering deleted messages or call logs from unallocated clusters that logical methods miss.
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 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 CHFI question in full detail.
Mobile and Malware Forensics — This question tests Mobile and Malware Forensics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Physical acquisition — Physical acquisition creates a bit-for-bit copy of the entire flash storage, including unallocated space and deleted file remnants. This is the only method that captures the raw NAND memory, allowing recovery of data from unallocated blocks and slack space that logical and file system acquisitions skip.
What should I do if I get this CHFI question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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