The correct answer is Advanced Logical Extraction. This method is the most likely choice because Cellebrite UFED’s Advanced Logical Extraction (ALE) combines file system parsing, a custom agent, and AFC (Apple File Conduit) exploits to bypass iOS security restrictions, enabling retrieval of the passcode, call logs, SMS messages, and application data from a locked device without requiring a full physical dump. On the Computer Hacking Forensic Investigator CHFI exam, this question tests your understanding of mobile forensic acquisition tiers, where ALE sits between basic logical and physical extraction. A common trap is confusing ALE with a full file system or physical extraction, but ALE specifically targets protected data on locked devices using software-based exploits rather than hardware-level imaging. Remember the mnemonic “ALE unlocks the lock” to recall that Advanced Logical Extraction is the go-to method for locked iOS devices when you need passcode and app data without a chip-off.
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 investigation, an analyst uses Cellebrite UFED to extract data from a locked iOS device. The extraction successfully retrieves the device's passcode, call logs, SMS messages, and application data. Which extraction method did the analyst MOST likely use?
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.
Why wrong: File system extraction is more detailed than logical but less than physical.
B
Physical extraction
Why wrong: Physical extraction captures the entire flash, but the question mentions retrieving passcode and app data, which is typical of advanced logical.
C
Advanced logical extraction
Advanced logical extraction (e.g., via UFED) can extract passcodes and app data from locked iOS devices.
D
Logical extraction
Why wrong: Basic logical extraction may not retrieve the passcode.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Advanced logical extraction
C is correct because Advanced Logical Extraction (ALE) on Cellebrite UFED leverages a combination of file system parsing, agent-based extraction, and exploit techniques to retrieve the device passcode, call logs, SMS messages, and application data from a locked iOS device without requiring a full physical dump. This method bypasses the logical extraction limitations by using a custom agent or AFC (Apple File Conduit) to access protected data, making it the most likely method for the described successful extraction.
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 extraction
Why it's wrong here
File system extraction is more detailed than logical but less than physical.
✗
Physical extraction
Why it's wrong here
Physical extraction captures the entire flash, but the question mentions retrieving passcode and app data, which is typical of advanced logical.
✓
Advanced logical extraction
Why this is correct
Advanced logical extraction (e.g., via UFED) can extract passcodes and app data from locked iOS devices.
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.
✗
Logical extraction
Why it's wrong here
Basic logical extraction may not retrieve the passcode.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that 'physical extraction' is the most powerful method for locked iOS devices, but the trap here is that physical extraction is rarely achievable on modern iOS due to hardware encryption, whereas Advanced Logical Extraction is the practical method used by tools like Cellebrite UFED to retrieve passcodes and application data from locked devices.
Detailed technical explanation
How to think about this question
Advanced Logical Extraction works by installing a temporary agent or using AFC to communicate with the device's lockdown service, often exploiting a vulnerability in the pairing process or using a forensic boot image to elevate privileges. This method can extract the keychain (which may contain the passcode hash) and application sandbox data without a full physical image, but it relies on the device being in a specific state (e.g., previously trusted or using a known exploit). In real-world scenarios, if the device is locked and has never been paired with the forensic workstation, ALE may fail, requiring alternative methods like brute-force or cloud extraction.
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: Advanced logical extraction — C is correct because Advanced Logical Extraction (ALE) on Cellebrite UFED leverages a combination of file system parsing, agent-based extraction, and exploit techniques to retrieve the device passcode, call logs, SMS messages, and application data from a locked iOS device without requiring a full physical dump. This method bypasses the logical extraction limitations by using a custom agent or AFC (Apple File Conduit) to access protected data, making it the most likely method for the described successful extraction.
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.
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.
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 CHFI practice question is part of Courseiva's free EC-Council 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 CHFI 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.