Q. Which of the following are the actions that operates on stack top?

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Q. A push down automata is said to be _________ if it has atmost one transition around all configurations.

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Q. The transition a Push down automaton makes is additionally dependent upon the:

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Q. A PDA machine configuration (p, w, y) can be correctly represented as:

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Q. |-* is the __________ closure of |-

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Q. With reference of a DPDA, which among the following do we perform from the start state with an empty stack?

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Q. A DPDA is a PDA in which:

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Q. State true or false:
Statement: For every CFL, G, there exists a PDA M such that L(G) = L(M) and vice versa.

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Q. If the PDA does not stop on an accepting state and the stack is not empty, the string is:

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Q. A language accepted by Deterministic Push down automata is closed under which of the following?

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Q. Which of the following is a simulator for non deterministic automata?

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Q. Finite-state acceptors for the nested words can be:

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Q. Which of the following is analogous to the following?
:NFA and NPDA

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Q. Let T={p, q, r, s, t}. The number of strings in S* of length 4 such that no symbols can be repeated.

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Q. Which of the following relates to Chomsky hierarchy?

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Q. A language is accepted by a push down automata if it is:

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Q. Which of the following is an incorrect regular expression identity?

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Q. Which of the following strings do not belong the given regular expression?
(a)*(a+cba)

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Q. Which of the following regular expression allows strings on {a,b}* with length n where n is a multiple of 4.

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Q. Which of the following strings is not generated by the given grammar:
S->SaSbS|e

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