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MCQ

The lexical analysis for a modern language such as Java needs the power of which one of the following machine models in a necessary and sufficient sense?

Finite state automata

Deterministic pushdown automata

Non-deterministic pushdown automata

Turing machine

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MCQ

What is the relation between NFA-accepted languages and DFA accepted languages?

Discussion

MCQ

The lexical analysis for a modern language such as Java needs the power of which one of the following machine models in a necessary and sufficient sense?

Finite state automata

Deterministic pushdown automata

Non-deterministic pushdown automata

Turing machine

Discussion

MCQ

Given the language L = {ab, aa, baa}, whih of the following strings are in L*?

i) abaabaaabaa
ii) aaaabaaaa
iii) baaaaabaaaab
iv) baaaaabaa

i, ii and iii

ii, iii and iv

i, ii and iv

i, iii and iv

Discussion

MCQ

A deterministic finite automation (DFA)D with alphabet ? = {a,b} is given below. Which of the following is a valid minimal DFA which accepts the same language as D?

Discussion

MCQ

Which of the following problems occur?

i) Does a given program ever produce an output?
ii) If L is a CFL, then is L



            
                                                            
                            
                            A
                            
                                i, ii, iii, iv                            
                        
                                            
                            
                            B
                            
                                i, ii                            
                        
                                            
                            
                            C
                            
                                ii, iii, iv                            
                        
                                            
                            
                            D
                            
                                iii, iv                            
                        
                                                

            
                Correct Answer: D
                i) Is a variation of Turing Machine Halting problem and it is undecidable.



        
            
            
                            
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