ADITYA KISHOR 
                                                                        from
                                                                        dps, gaya
                                                                    
                                                                        
                                                                    
                                                                    (A) (B)  (C) (D)
Ans 1:
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Ans 2:
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Class : Class 7 
                                                                                                
                                                                                                the answer is magnetic tape because in magnetic tape the information is encrypted magnetically 
                                                                                            
                                                                                             
             
             
        