A Level Computer Science OCR Practice Exam

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Which of the following symbols represents the XOR operation?

  1. ¯

  2. ⊕

  3. ∨

  4. ∧

The correct answer is: ⊕

The symbol that represents the XOR (exclusive OR) operation is indeed the one that looks like a plus sign enclosed in a circle, which is commonly denoted as ⊕. The XOR operation is a logical operation that outputs true or 1 only when the number of true inputs is odd. For two binary inputs, XOR returns true if exactly one of the inputs is true, which differs from the standard OR operation that would return true if at least one input is true. The other symbols represent different logical operations: the overline (¯) typically denotes negation or NOT, the v (∨) symbol represents the OR operation, and the caret (∧) symbol signifies the AND operation. Therefore, ⊕ is uniquely associated with the XOR operation and is the correct choice.

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