220-802 Question #296: Real Exam Question with Answer & Explanation

The correct answer is C: Use an overwrite program. An overwrite program (e.g., DBAN) repeatedly writes patterns of 1s and 0s over every sector of the drive, replacing the original data and making forensic recovery extremely difficult or impossible. Simply formatting (B) or repartitioning (D) a drive only removes the file system's

Question

Which of the following is the MOST secure method, short of physical destruction, that would be used to ensure that data on a hard drive cannot be recovered?

Options

AUse a degaussing tool
BFormat the drive
CUse an overwrite program
DRepartition the drive

Explanation

An overwrite program (e.g., DBAN) repeatedly writes patterns of 1s and 0s over every sector of the drive, replacing the original data and making forensic recovery extremely difficult or impossible. Simply formatting (B) or repartitioning (D) a drive only removes the file system's index/pointers-the underlying data remains on disk and can be recovered with standard tools. Degaussing (A) uses a powerful magnetic field to erase magnetic HDDs but is ineffective on SSDs and flash-based storage, making overwriting the most universally reliable software-based method short of physical destruction.

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