The answer is dd if=image.dd of=superblock.bin bs=512 skip=64 count=2. This command correctly extracts the backup superblock because the ext4 superblock is always 1024 bytes in size, and the offset of 32768 bytes must be divided by the block size (bs) of 512 to determine the skip value—32768 divided by 512 equals 64. The count is then 1024 divided by 512, which equals 2, ensuring exactly the superblock’s data is captured. On the CHFI exam, this tests your ability to calculate dd parameters from raw offsets, a common forensic skill when recovering filesystem metadata from disk images. A frequent trap is forgetting that dd works in blocks, not bytes, so candidates mistakenly use skip=32768 or count=1024, which would extract the wrong data. Remember the memory tip: “Skip the offset, count the size—divide both by your block size.”
CHFI Storage Forensics and File System Analysis Practice Question
This CHFI practice question tests your understanding of storage forensics and file system analysis. 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.
An analyst recovers a disk image from a Linux server that used ext4. The image shows a superblock backup at multiple offsets. Which dd command would correctly extract the backup superblock located at offset 32768 bytes?
Why wrong: Skip=32 would give offset 32768, but count=1 gives 1024 bytes, correct but not typical as block size is 1024, but it's still functional. However, the standard is bs=512.
Skip=32 would give offset 32768, but count=1 gives 1024 bytes, correct but not typical as block size is 1024, but it's still functional. However, the standard is bs=512.
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Identify which CHFI exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Storage Forensics and File System Analysis — This question tests Storage Forensics and File System Analysis — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: dd if=image.dd of=superblock.bin bs=512 skip=64 count=2 — To extract the backup superblock at offset 32768 with size 1024 bytes, dd needs skip=32768/512=64 and count=1024/512=2.
What should I do if I get this CHFI question wrong?
Identify which CHFI exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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.