COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It cannot be reached anytime
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There is no necessity of the state
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If control enters no way to come out from the state
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If control enters FA deads
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Detailed explanation-1: -Which of the following statement is true for Dead State? Explanation: It is a rejecting state for if the control enters it reaches the dead end and cannot reach an accepting state.
Detailed explanation-2: -Dead State-A rejecting state that is essentially a dead end. Once the machine enters a dead state, there is no way for it to reach an accepting state, so we already know that the string is going to be rejected.
Detailed explanation-3: -Trap state in DFA If a transition goes to a state from which it can never escape. Such a state is called a trap state. It is called the dead state. In the above example, q2 is a trap or dead state because it can’t reach the final state.
Detailed explanation-4: -Dead Configuration or Trap State-In Non-Deterministic Finite Automata, The result of a transition function may be empty. In such a case, automata gets stopped forcefully after entering that configuration. This type of configuration is known as dead configuration.
Detailed explanation-5: -Even minimal DFAs must include dead states; otherwise, they’re either (a) not DFAs or (b) not accepting the same language as their non-minimal counterparts.