CERTIFIED-IN-CYBERSECURITY · Question #89
CERTIFIED-IN-CYBERSECURITY Question #89: Real Exam Question with Answer & Explanation
The correct answer is C: Erasing the data on a disk. Degaussing is a technique used to erase data from a magnetic storage device, such as a hard disk drive (HDD) or magnetic tape. In degaussing, devices are exposed to strong magnetic fields that neutralize the magnetic records of the data stored on the device. This effectively eras
Question
What is the PRIMARY objective of a degaussing?
Options
- AReducing noisy data on a disk
- BPreventing magnetic side-channel attacks
- CErasing the data on a disk
- DRetaining the data on a disk
Explanation
Degaussing is a technique used to erase data from a magnetic storage device, such as a hard disk drive (HDD) or magnetic tape. In degaussing, devices are exposed to strong magnetic fields that neutralize the magnetic records of the data stored on the device. This effectively erases the data, making it difficult or impossible to recover. Degaussing is often used to securely erase data from storage devices before disposing or repurposing them, thereby ensuring that unauthorized parties cannot access sensitive or confidential information. Conceivably, a magnetic side-channel attack could target the magnetic fields emitted by a disk, in order to extract information from it. Therefore, strictly speaking, degaussing the disk would prevent the side channel attack by rendering it unusable. However, this is not the primary goal of degaussing (see ISC2 Study Guide, chapter 5, module 1).
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