Exam CISA topic 1 question 121 discussion

Degaussing is basically to destroy the disc, the key word in that question is to RE PURPOSE. Degaussing will make the disc not repurposable.

A is the correct answer here. Degaussing is physical destroy the HDD. The only reusable method is the random data overwrite method. The U.S. Department of Defense also specifies overwriting as standard based on "DoD 5220.22".

When repurposing workstations that contained confidential information, the best way to securely dispose of the data is to erase the disks by degaussing. Degaussing uses a strong magnetic field to destroy the magnetic domains on the disk, making data recovery virtually impossible. Why not the others? A. Overwrite the disks with random data ➤ Effective but time-consuming and may not be fully reliable for some types of media. B. Reformat the disks ➤ Only removes pointers to data; data can still be recovered using specialized tools. D. Delete the disk partitions ➤ Does not remove data; partitions can be recreated and data recovered.

Re-purpose is the key word. we need to re-use the stations, so degaussing is not an option.

Answer: A

disc will be reused , so should A

A is answer.

A is the correct answer here. Degaussing will render the disk useless, and that goes against the requirement here, which is to RE-PURPOSE the workstation

C is better than A

Key word is confidential, no other option but C is acceptable

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.protondata.com/blog/data-security/what-is-degaussing/&ved=2ahUKEwju7PrS5tj_AhUaUd4KHS2NCkQQFnoECA0QAQ&usg=AOvVaw2r4w8HzJQFM2d0h_cMwqty

i think its C. A quick google search on this topic revealed that A isn't the right answer for modern disk drives whereas degaussing is characterized as one of the only methods viable for safely removing data from modern drives.

i dont think its A but idk which one is the right answer. Refer to the following https://security.stackexchange.com/questions/127745/why-use-random-value-when-overwriting-files

A. Overwrite the disks with random data. Overwriting the disks with random data is considered the best practice for secure data disposal. This process involves writing random data patterns over the existing data, making it extremely difficult to recover the original information. By overwriting the disks, the confidential information is effectively erased, ensuring that it cannot be easily retrieved or reconstructed.

The A is the correct answer for me, Because degaussing doesn't work on SSDs. Degaussing uses a magnetic field to wipe data on a magnetic platter of hard disks and is very expensive

C with no doubt

Definitely C