Exam CIPT topic 1 question 55 discussion

D. A count of the century of birth and hash of the last 3 digits of the person’s Aadhaar number provides a broader de-identification strategy. The count of the century of birth is less specific, and hashing the last 3 digits of the Aadhaar number adds an additional layer of obscurity. Together, these methods provide better protection against re-identification compared to the other options. Example Dataset Summary: A: Year 1980 - Count 500; Gender (hashed) 5f4dcc3b5aa765d61d8327deb882cf99 B: January - Count 300; First initial "J" (hashed) 5f4dcc3b5aa765d61d8327deb882cf99 C: 1st - Count 50; First initial "J" (hashed) 5f4dcc3b5aa765d61d8327deb882cf99 D: 2000s - Count 1,000; Last 3 digits (hashed) a9d9c3ef8f83e8c1c8bcb373e1d81799

The correct answer is D. A count of the century of birth and hash of the last 3 digits of the person’s Aadhaar number. This option provides the least amount of identifiable information. The century of birth is a very broad category, and hashing the last 3 digits of the Aadhaar number does not reveal much information about the individual. The other options provide more specific information, such as the year, month, or day of birth, and more identifiable aspects of the person’s name or gender, which could potentially be used to re-identify the individual. Therefore, option D is the most de-identified dataset.

I think is A. Gender and count of year most de-identified.