CISSP Practice question #89

Replacing one character with another is called?
A: Confusion.
B: Diffusion.
C: Substition.
D: Permutation.

CBK 3: Security Engineering
Source: practice tests


C: Substitution replaces one character for another, this provides diffusion.

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  1. Answer: C: Substitution.

    To replace or substitute all occurrences of one character with another character, you can use the substitute function.

    The SUBSTITUTE function is full automatic. All you need to do is supply “old text” and “new text”. SUBSTITUTE will replace every instance of the old text with the new text.

    If you need to perform more than one replacement at the same time, you’ll need to nest multiple SUBSTITUTE functions.

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