Finite state machine can recognize language generated by ________.

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UGC NET Computer Science (Paper 3) Nov 2017 Official Paper
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  1. Only context free grammar
  2. Only context sensitive grammar
  3. Only regular grammar
  4. any unambiguous grammar

Answer (Detailed Solution Below)

Option 3 : Only regular grammar
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UGC NET Paper 1: Held on 21st August 2024 Shift 1
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Detailed Solution

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The correct answer is "option 3".

CONCEPT: 

The finite state machine, also known as a finite automaton, is a model of computation that can be used to model problems in various fields like Artificial Intelligence & has only finite internal memory, that's why called a finite state machine. 

It can be only in one of any definite states at any instant of time and changes the state when receiving input

EXPLANATION: 

Option1: 

Push Down automata can recognize language generated by a context-free grammar.

Option2:  

Linear Bounded automata can recognize language generated by Context-sensitive grammar.

Option3:  

Finite state machine can recognize language generated by regular grammar.

Option4: 

Unambiguous grammar is the grammar that doesn't have ambiguity i.e. does not have more than one left or rightmost derivation for an input string.

Hence, language generated by the regular grammar is accepted by the finite state machines. 

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