Which of the following approaches is the MOST effective way to dispose of data on multiple hard drives?

Question

Options

• ADelete every file on each drive.
• BDestroy the partition table for each drive using the command line.
• CDegauss each drive individually.
• DPerform multiple passes on each drive using approved formatting methods.

• A
  4% (1)
• B
  8% (2)
• C
  17% (4)
• D
  71% (17)

Explanation

According to the CISSP Official (ISC)2 Practice Tests3, the most effective way to dispose of data on multiple hard drives is to perform multiple passes on each drive using approved formatting This means that the data on the hard drives should be overwritten with random or meaningless patterns several times, using software tools or commands that follow the standards and guidelines for secure data erasure. This can ensure that the data on the hard drives is irrecoverable and unreadable, even by using advanced forensic techniques or tools. Deleting every file on each drive is not an effective way to dispose of data on multiple hard drives, as it does not actually erase the data, but only removes the pointers or references to the data. The data can still be recovered and read by using undelete or recovery tools, or by accessing the slack or unallocated space on the drive. Destroying the partition table for each drive using the command line is not an effective way to dispose of data on multiple hard drives, as it does not actually erase the data, but only removes the information about how the drive is divided into logical sections. The data can still be recovered and read by using partition recovery tools, or by accessing the raw data on the drive. Degaussing each drive individually is not an effective way to dispose of data on multiple hard drives, as it may not work on modern hard drives that use perpendicular recording technology. Degaussing is a process that uses a strong magnetic field to erase the data on magnetic media, such as tapes or disks. However, modern hard drives have higher coercivity, which means they require a stronger magnetic field to be erased, and degaussing may not be able to generate such a field. Degaussing may also damage the hard drive components and render them unusable.

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