Which of the following MOST accurately describes the difference between tokenization and masking? (Select the best answer.)

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The question asks which statement most accurately distinguishes tokenization from masking. 
Option A: 'Masking is a type of tokenization.' This is not correct because masking and tokenization are distinct techniques used for data protection; masking is typically a reversible or non-reversible obfuscation applied to data to hide portions, while tokenization replaces data with a reference token that maps to the original data in a secure vault. 
Option B: 'Tokenization is a type of masking.' This is also inaccurate for similar reasons—tokenization does not simply act as masking; it relies on a secure mapping to a token vault, rather than merely obscuring or altering the appearance of the data. 
Option C: 'Tokenization is a unique mapping, whereas masking is not.' This statement aligns with common definitions: tokenization provides a one-to-one or highly constrained mapping from the original data to a token, with the ability to look up the original data in a vault, whereas masking generally does not guarantee a unique, reversibly-lookup-friendly mapping and is mainly about hiding or concealing data in place. 
Option D: 'Masking is a unique mapping, whereas tokenization is not.' This contradicts how tokenization functions, since tokenization relies on the vault-backed mapping and masking does not typically offer a stable, reversible, unique mapping. 
In summary, the core distinction rests on the idea that tokenization creates a dedicated, secure mapping to tokens, while masking focuses on concealing content and typically lacks a guaranteed one-to-one, reversible mapping.

CS 410.01-Spring 2025 ST: Cyber Security Quiz 9

Which of the following MOST accurately describes the difference between tokenization and masking? (Select the best answer.)

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