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Compiler Design · Lexical Analysis
Official IIT answer key · IISc Bangalore · Audited Aug 2026
GATE CSE 2024 Set 2 Q21 · MCQ · 1 mark
Key concept
Topic notes
Lexical Analysis in GATE CS is consistently tested as a 1-mark foundational topic covering tokenization mechanics, formal automaton models, error classification, and compiler data structure lifecycle. Recent years have shifted from purely definitional phase-matching questions toward practical token segmentation using the maximal munch rule and formal construction of NFA/DFA models from regular expressions.
Full Lexical Analysis guide →Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.