312-50V9 Question #370: Real Exam Question with Answer & Explanation

The correct answer is D: 10001011. XOR (exclusive OR) produces a 1 when the corresponding bits differ and a 0 when they are the same, yielding 10001011 for the given operands.

Question

XOR is a common cryptographic tool. 10110001 XOR 00111010 is?

Options

A10111100
B11011000
C10011101
D10001011

Explanation

XOR (exclusive OR) produces a 1 when the corresponding bits differ and a 0 when they are the same, yielding 10001011 for the given operands.

Common mistakes.

A. 10111100 is an incorrect result that does not match a correct bitwise XOR of the two operands.
B. 11011000 is an incorrect result that does not match a correct bitwise XOR of the two operands.
C. 10011101 is an incorrect result that does not match a correct bitwise XOR of the two operands.

Concept tested. Bitwise XOR operation in cryptography

Reference. https://csrc.nist.gov/glossary/term/exclusive_or

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