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.
In mobile forensics, which acquisition method preserves the highest level of data integrity and captures the most data from an iOS device?
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 is correct because it creates a bit-for-bit copy of the entire flash storage, including unallocated space, deleted files, and system partitions. This method bypasses the iOS file system abstraction, preserving the highest data integrity and capturing all recoverable data, unlike higher-level acquisitions that only retrieve accessible files.
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 extracts allocated files using file system APIs but does not capture unallocated space.
✓
Physical acquisition
Why this is correct
Physical acquisition creates a bit-for-bit copy of the entire flash memory, preserving all data including deleted files.
Related concept
Read the scenario before looking for a memorised answer.
✗
Logical acquisition
Why it's wrong here
Logical acquisition only extracts files visible through the operating system, missing deleted data and low-level structures.
✗
Manual acquisition
Why it's wrong here
Manual acquisition involves manually viewing and recording data, which is the least thorough and most error-prone.
Common exam traps
Common exam trap: answer the scenario, not the keyword
EC-Council often tests the misconception that 'file system acquisition' is the most thorough because it includes system files, but the trap is that physical acquisition alone captures unallocated space and deleted data, which file system acquisition cannot access due to iOS sandboxing and file system abstraction.
Detailed technical explanation
How to think about this question
Physical acquisition on iOS typically requires a bootrom exploit (e.g., checkm8 for A5–A11 chips) to bypass the Secure Enclave and extract raw NAND blocks, including the HFS+/APFS volume metadata and journal. This method captures the entire storage image, allowing recovery of deleted SQLite records and plist remnants, which is critical in cases like recovering encrypted WhatsApp messages from unallocated space. In practice, tools like Cellebrite UFED or GrayKey perform this by placing the device into DFU mode and reading the raw storage via USB, though modern iOS devices with A12+ chips have patched these exploits, making physical acquisition impossible without hardware-level attacks.
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 CHFI 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.
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 is correct because it creates a bit-for-bit copy of the entire flash storage, including unallocated space, deleted files, and system partitions. This method bypasses the iOS file system abstraction, preserving the highest data integrity and capturing all recoverable data, unlike higher-level acquisitions that only retrieve accessible files.
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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