CAS-002 · Question #579
Which of the following is the MOST cost-effective solution for sanitizing a DVD with sensitive information on it?
The correct answer is D. Shred the DVD. DVDs are optical media that cannot be reliably overwritten or degaussed like magnetic drives, making physical destruction the correct sanitization approach. Shredding is the most cost-effective physical destruction method compared to incineration.
Question
Which of the following is the MOST cost-effective solution for sanitizing a DVD with sensitive information on it?
Options
- AWrite over the data
- BPurge the data
- CIncinerate the DVD
- DShred the DVD
How the community answered
(34 responses)- A3% (1)
- B3% (1)
- C3% (1)
- D91% (31)
Why each option
DVDs are optical media that cannot be reliably overwritten or degaussed like magnetic drives, making physical destruction the correct sanitization approach. Shredding is the most cost-effective physical destruction method compared to incineration.
Writing over data is not a reliable sanitization method for optical media such as DVD-R discs, which are write-once media and cannot have previously recorded data overwritten.
Purging using degaussing is designed for magnetic media and has no effect on optical discs, making it an inapplicable sanitization method for DVDs.
Incineration is a valid destruction method for optical media but requires access to specialized facilities and is significantly more expensive than shredding, disqualifying it as the most cost-effective option.
Shredding physically destroys the optical disc substrate, rendering all data completely unrecoverable, and commercial disc shredders are widely available at low cost, making it the most cost-effective approved destruction method for optical media per NIST SP 800-88 guidance.
Concept tested: Media sanitization and destruction methods for optical media
Source: https://csrc.nist.gov/publications/detail/sp/800-88/rev-1/final
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