CISSP · Question #27
CISSP Question #27: Real Exam Question with Answer & Explanation
The correct answer is A: Degaussing. Degaussing is an effective method for avoiding magnetic media data remanence, which is the residual representation of data that remains on a storage device after it has been erased or overwritten. Degaussing is a process of applying a strong magnetic field to the storage device,
Question
Which of the following is an effective method for avoiding magnetic media data remanence?
Options
- ADegaussing
- BEncryption
- CData Loss Prevention (DLP)
- DAuthentication
Explanation
Degaussing is an effective method for avoiding magnetic media data remanence, which is the residual representation of data that remains on a storage device after it has been erased or overwritten. Degaussing is a process of applying a strong magnetic field to the storage device, such as a hard disk or a tape, to erase the data and destroy the magnetic alignment of the media. Degaussing can ensure that the data is unrecoverable, even by forensic tools or techniques. Encryption, DLP, and authentication are not methods for avoiding magnetic media data remanence, as they do not erase the data from the storage device, but rather protect it from unauthorized access or disclosure.
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