Assess students' ability to recall and state precise definitions and basic examples: the axioms and examples of a sigma-algebra (including generated sigma-algebra), the definition of a measurable function relative to given sigma-algebras (including simple measurable functions), and the Lebesgue integral (definition for nonnegative/simple functions, extension to integrable functions, and basic properties like linearity and monotone convergence). Scope: graduate-entry, introductory recall.