CAS-001 · Question #9
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. Shredding (D) is the most cost-effective physical destruction method for optical media such as DVDs. Unlike magnetic media, DVDs cannot be reliably sanitized by overwriting (A) because most DVDs (DVD-R, DVD+R) are write-once media - data physically burned into the dye layer…
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
(47 responses)- A2% (1)
- B4% (2)
- C2% (1)
- D91% (43)
Explanation
Shredding (D) is the most cost-effective physical destruction method for optical media such as DVDs. Unlike magnetic media, DVDs cannot be reliably sanitized by overwriting (A) because most DVDs (DVD-R, DVD+R) are write-once media - data physically burned into the dye layer cannot be overwritten. Purging (B) is a technique applicable to magnetic storage and does not apply to optical media. Incineration (C) achieves the same result as shredding but requires specialized equipment and is significantly more expensive. Industrial disc shredders are widely available, inexpensive to use, and reduce a DVD to particles small enough to make data recovery physically impossible, making shredding the optimal balance of effectiveness and cost.
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