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In an absolute loading scheme which loader function is accomplished by assembler?

Re-allocation

Allocation

Linking

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An optimizer Compiler __________

Is optimized to occupy less space

Is optimized to occupy less space & Optimize the code

Optimize the code

None of the mentioned

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Which is the most powerful parser?

SLR

LALR

Canonical LR

Operator PrecedenceThe most powerful parser is Canonical LR

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The top-down parsing method is also called

Operator precedence parsing

Recursive descent parsing

Shift reduce parsing

None of these

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Consider the following two sets of LR (1) items of an LR (1) grammar.

X -> c.X, c/d
   X -> .cX, c/d
   X -> .d, c/d
   X -> c.X, $
   X -> .cX, $
   X -> .d, $

Which one is false?

1. Cannot be merged since look ahead



            
                                                            
                            
                            A
                            
                                1 only                            
                        
                                            
                            
                            B
                            
                                2 only                            
                        
                                            
                            
                            C
                            
                                1 and 4 only                            
                        
                                            
                            
                            D
                            
                                1, 2, 3 and 4 only                            
                        
                                                

            
                Correct Answer: D
                All these are valid reasons.



        
            
            
                            
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                5.
                When the parser starts constructing the parse tree from the start symbol and then tries to transform the start symbol to the input, it is called?
            

            
                                                            
                            
                            A
                            
                                bottom-up parsing                            
                        
                                            
                            
                            B
                            
                                top-down parsing                            
                        
                                            
                            
                            C
                            
                                Both A and B                            
                        
                                            
                            
                            D
                            
                                None of the above                            
                        
                                                

            
                Correct Answer: B
                When the parser starts constructing the parse tree from the start symbol and then tries to transform the start symbol to the input, it is called top-down parsing.
            
        

        
            
            
                            
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