The correct answer is that the image is an exact copy of the source. This conclusion follows directly from the acquisition log, which shows that the hash values computed for the source drive and the acquired image match exactly. Disk image integrity verification via hash comparison relies on cryptographic hash functions like MD5 or SHA-1; when the hash of the original evidence matches the hash of the forensic image, it confirms a bit-for-bit identical copy, ensuring the image has not been altered or corrupted. On the CHFI exam, this concept tests your understanding of forensic soundness and the chain of custody, often appearing in scenario-based questions where a mismatched hash signals tampering or a flawed acquisition. A common trap is assuming a matching hash guarantees the data is unencrypted or readable—it only confirms exact duplication. Remember the mnemonic: Hash Match = Exact Catch.
CHFI Evidence Acquisition and Duplication Practice Question
This CHFI practice question tests your understanding of evidence acquisition and duplication. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The image is an exact copy of the source
The acquisition log shows that the hash values computed for the source drive and the acquired image match exactly. A matching hash (e.g., MD5 or SHA-1) verifies that the image is a bit-for-bit identical copy of the original evidence, confirming forensic soundness. Therefore, the image is an exact copy of the source, making option D correct.
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 image is not forensically sound because the verification passed
Why it's wrong here
Verification passing is good.
✗
The source and image have different data
Why it's wrong here
The hashes match, so data is identical.
✗
The image is corrupted because only one hash algorithm was used
Why it's wrong here
Two algorithms were used and they match.
✓
The image is an exact copy of the source
Why this is correct
Matching hashes and verification confirm integrity.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
EC-Council often tests the misconception that a passed verification indicates the image is not forensically sound, or that using only one hash algorithm implies corruption, when in fact a matching hash confirms integrity regardless of the number of algorithms used.
Detailed technical explanation
How to think about this question
Forensic imaging tools like FTK Imager or dd compute a hash (e.g., MD5, SHA-1) of the source and the image during acquisition. The hash is a cryptographic checksum that changes if even a single bit differs; a match verifies integrity. In practice, examiners often use two algorithms (e.g., MD5 and SHA-1) for redundancy, but a single algorithm is sufficient to prove exact duplication under the CHFI methodology.
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.
Evidence Acquisition and Duplication — This question tests Evidence Acquisition and Duplication — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The image is an exact copy of the source — The acquisition log shows that the hash values computed for the source drive and the acquired image match exactly. A matching hash (e.g., MD5 or SHA-1) verifies that the image is a bit-for-bit identical copy of the original evidence, confirming forensic soundness. Therefore, the image is an exact copy of the source, making option D correct.
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.
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.