The answer is incineration in a certified facility. This method is the only one that achieves complete physical destruction of both the information and the media, reducing classified documents to ash and eliminating any possibility of data reconstruction through magnetic or logical recovery techniques. For the CISSP exam, this question tests your understanding of the difference between clearing, purging, and destruction—specifically that secure data destruction methods for classified documents must be both verifiable and auditable, which a certified facility provides through documented chain-of-custody and destruction certificates. A common trap is choosing degaussing or shredding, but degaussing only affects magnetic media and leaves the physical medium intact, while standard shredding may leave fragments that can be reassembled. Remember the mnemonic: “Ash is final, no trace to find; certified fire leaves nothing behind.”
CISSP Asset Security Practice Question
This CISSP practice question tests your understanding of asset security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A government agency's data retention policy requires that classified documents be destroyed after 10 years. Which method ensures both the information and the media are completely destroyed in a way that is verifiable and auditable?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Incineration in a certified facility
Incineration in a certified facility is the only option that completely destroys both the information and the physical media, leaving no residue that could be reconstructed. For classified government documents, the destruction must be verifiable and auditable, which a certified incineration facility provides through documented chain-of-custody and destruction certificates. This method ensures the media is physically reduced to ash, eliminating any possibility of data recovery, unlike logical or magnetic techniques.
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.
✓
Incineration in a certified facility
Why this is correct
Incineration destroys both data and media, and provides audit trail via destruction certificates.
Related concept
Read the scenario before looking for a memorised answer.
✗
Overwriting the data seven times
Why it's wrong here
Overwriting is software-based and may not be verifiable for modern drives; also doesn't destroy media.
✗
Degaussing the storage media
Why it's wrong here
Degaussing does not physically destroy the media; it only erases magnetic data.
✗
Deleting all files and emptying the recycle bin
Why it's wrong here
Deleting files only removes references; data remains recoverable.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'sanitization' with 'destruction' — they may choose degaussing or overwriting because those methods effectively erase data, but the question explicitly requires complete destruction of both information and media, which only physical destruction methods like incineration achieve.
Detailed technical explanation
How to think about this question
Certified incineration facilities follow standards like NSA/CSS 9-12 or NIST SP 800-88 for destruction, where media is burned at temperatures exceeding 1,000°C (1,832°F) to reduce it to inert ash. This process is auditable via destruction certificates that include serial numbers, timestamps, and witness signatures, ensuring compliance with retention policies. In contrast, degaussing relies on a magnetic field of at least 4,000 Oersteds to erase data, but modern SSDs and flash memory are immune to degaussing because they store data electrically, not magnetically, making this method unreliable for all media types.
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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CISSP question in full detail.
Asset Security — This question tests Asset Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Incineration in a certified facility — Incineration in a certified facility is the only option that completely destroys both the information and the physical media, leaving no residue that could be reconstructed. For classified government documents, the destruction must be verifiable and auditable, which a certified incineration facility provides through documented chain-of-custody and destruction certificates. This method ensures the media is physically reduced to ash, eliminating any possibility of data recovery, unlike logical or magnetic techniques.
What should I do if I get this CISSP 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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This CISSP practice question is part of Courseiva's free ISC2 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 CISSP exam.
Question Discussion
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