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Question 29Asked in BEL PE Computer Science, 20 Dec 2025 (5:00 PM)

During lexical analysis, which component is primarily responsible for recognising tokens from the input stream of characters?

  1. AParser, using syntax-directed translation rules
  2. BFinite automaton, driven by regular expressions for token patterns
  3. CSemantic analyzer, based on attribute grammars
  4. DSymbol table manager, by assigning identifiers unique addresses
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Correct answer: (B) Finite automaton, driven by regular expressions for token patterns

From BEL PE Computer Science PYQ, 20 Dec 2025 (5:00 PM)

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