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picture1_Computer Science Thesis Pdf 120278 | Computer Instructor Trb Exam 2019 Model Question Paper With Answer Key 11 English Medium


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File: Computer Science Thesis Pdf 120278 | Computer Instructor Trb Exam 2019 Model Question Paper With Answer Key 11 English Medium
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                                                                      Padasalai
            
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                 ADHITHYA TRB - TET COACHING CENTRE  KANCHIPURAM  
                                                                SUNDER  MATRIC SCHOOL  - 9786851468  
                PG  - TRB                  COMPUTER SCIENCE                    TEST  - 11      
                      
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            1. What is new operator? 
                     a)       Allocates memory for an object or array 
                     b)       Allocates memory for an object or array and returns a particular pointer 
                     c)       Used as return type when an object is created 
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                     d)       Used to declare any new thing in a program 
            
            2.    What happens when new fails? 
                     a)       Returns zero always 
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                     b)       Throws an exception always 
                     c)       Either throws an exception or returns zero 
                     d)       Terminates the program 
                     
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            3.    The objects allocated using new operator ________________ 
                     a)       Are destroyed when they go out of scope 
                     b)       Are not destroyed even if they go out of scope 
                     c)       Are destroyed anytime 
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                     d)       Are not destroyed throughout the program execution 
                  
            4.    If new operator is defined for a class and still global new operator have to  
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                     be used, which operator should be used with the keyword new? 
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                     a)       Colon                                         b)   Arrow 
                     c)       Dot                                           d)   Scope resolution 
                     
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            5.    Which operator returns address of unallocated blocks in memory? 
                     a)       The delete operator                           b)  The empty operator 
                     c)    The new operator                                 d)   All of them 
                     
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            6.    In CPP, dynamic memory allocation is done using ______________  
                     operator.  
                     a.       calloc()                                      b.   malloc() 
                     c.       allocate                                      d.   New 
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           7.        Which of the following is not a false statement about new operator?  
                     a.       It can’t be overloaded. 
                     b.       It returns garbage value when memory allocation fails. 
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                     c.       It automatically computes the size of the data object. 
                     d.       All of these 
            
           8.        Which of the following operator is used to release the dynamically allocated 
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                     memory in CPP?  
                     a.       remove                                        b.   free 
                     c.       delete                                        d.   both b and c 
            
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                          AADHITHYA PG-TRB COMPUTER SCIENCE ,  KANCHEEPURAM- 9786851468 
            
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                                                          Padasalai
          
          
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          9.      Which of the following is/are valid ways to allocate memory for an integer by 
                  dynamic memory allocation in CPP?  
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                  a.     int *p = new int(100);                 
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                  b.     int *p; p = new int; *p = 100; 
                  c.     int *p = NULL; p = new int; *p=100;                    
                  d.     All of these 
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         10.     During dynamic memory allocation in CPP, new operator returns _________  
                  value if memory allocation is unsuccessful. 
                  a.     False                                 b.   NULL 
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                  c.     Zero                                  d.   None of these 
          11.     Does delete return any value? 
                  a)     Yes, positive value                   b)   Yes, negative value 
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                  c)     Yes, zero value                       d)   No 
           
          12.   Which type of value is resulted from the delete operator? 
                  a)    void                                   b)   void pointer 
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                  c)     null pointer                          d)   null 
           
          13.   When delete operator is used ___________________ (If object has a 
                  destructor) 
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                  a)     Object destructor is called after deallocation 
                  b)     Object destructor is called before deallocation 
                  c)     Object destructor is not used 
                  d)     Object destructor can be called anytime during destruction 
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         14)      Which is the correct syntax to delete a single object? 
                  a)     delete *objectName;                   b)   objectName delete; 
                  c)     delete objectName;                    d)   objectName *delete; 
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         15.    Which of the following are member dereferencing operators in CPP? 
                  1.     * 
                  2.     :: 
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                  3.     ->*  
                  4.      ::* 
                  5.     -> 
                  a.     Only 1, 3, 4                          b.   Only 1 and 5 
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                  c.     Only 3 and 4                          d.   Only 3,4,5 
          
         16.      Which of the followings is/are pointer-to-member declarator?  
                  a.     ->*                                   b.   .* 
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                  c.     ::*                                   d.   both a and b 
          
          
          
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                      AADHITHYA PG-TRB COMPUTER SCIENCE ,  KANCHEEPURAM- 9786851468 
          
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                                              Padasalai
        
        
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       17.    What is meaning of following declaration? int(*p[5])(); 
              a.    p is pointer to function. 
              b.    p is array of pointer to function. 
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              c.    p is pointer to such function which return type is array. 
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              d.    p is pointer to array of function. 
        
       18.    A void pointer cannot point to which of these? 
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              A.   methods in c++                  B.   class member in c++ 
              C.   both a & b                      D.   none of the mentioned 
        
       19.    What we can’t do on a void pointer? 
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              A.   pointer arithemetic             B.   pointer functions  
              C.   both of the mentioned           D.   none of the mentioned 
        
       20.    Choose the right option string* x, y; 
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              A.   x is a pointer to a string, y is a string  
              B.   y is a pointer to a string, x is a string  
              C.   both x and y are pointer to string types  
              D.   none of the mentioned 
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       21.    Which of the following is illegal? 
              A.   int *ip;                        B.   string s, *sp = 0; 
              C.     int i; double* dp = &i;       D.   int *pi = 0; 
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       22.    What will happen in this code? 
              int a = 100, b = 200; 
              int *p = &a, *q = &b; 
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               p = q; 
              A.   b is assigned to a              B.   p now points to b  
              C.   a is assigned to b              D.   q now points to a 
        
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       23.    By default, all the files are opened in ___________mode .  
              a.    Binary                         b.   Text 
              c.    Can’t say                      d.   NULL 
        
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       24.    Which of the following is not a file opening mode ____ .  
              a.    ios::ate                       b.   ios::nocreate 
              c.    ios::noreplace                 d.   ios::truncate 
        
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        25.    __________ is return type of is_open() function.  
              a.    int                            b.   bool 
              c.    float                          d.   char * 
        
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        26.   If we have object from fstream class, then what is the default mode of 
              opening the file?  
               a.   ios::in|ios::out               b.   ios::in|ios::out|ios::trunc 
               c.   ios::in|ios::trunk             d.   Default mode depends on compiler 
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                  AADHITHYA PG-TRB COMPUTER SCIENCE ,  KANCHEEPURAM- 9786851468 
        
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                                                                   Padasalai
            
            
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           27.     To create an output stream, we must declare the stream to be of class ____ 
                      a.     ofstream                                     b.   ifstream 
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                     c.      iostream                                     d.   None of these 
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            28.      Streams that will be performing both input and output operations must be 
                     declared as class _________ .  
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                     a.      iostream                                     b.   fstream 
                     c.      stdstream                                    d.   Stdiostream 
            
           29.       To perform File I/O operations, we must use _____________ header file.  
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                     a.      < ifstream>                                  b.   < ofstream> 
                     c.      < fstream>                                   d.   Any of these 
            
            30.   Which of the following is not used to seek a file pointer?  
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                     a. ios::cur                                          b.   ios::set 
                     c. ios::end                                          d.   ios::beg 
            
            31.   Which operator is used to insert the data into file? 
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                     a)    >>                                             b)    << 
                     c)      <                                            d)   None of the mentioned 
           32.    Which function is used to position back from the end of file object? 
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                     a)      seekg                                        b)   seekp   
                     c)      both seekg & seekp                           d)   none of the mentioned 
            33.   Which is used to do the dereferencing? 
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                     a)    pointer without asterix                        b)   value without asterix 
                     c)      pointer with asterix                         d)   value with asterix 
           34.    To which does the function pointer point to? 
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                     a)      variable                                     b)   constants 
                     c)      function                                     d)   absolute variables 
           35)    What will we not do with function pointers? 
                    a)    allocation of memory                            b)   deallocation of memory 
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                    c)       both allocation & deallocation of memory 
                    d)       none of the mentioned 
           36)    What is the mandatory part to present in function pointers? 
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                     a)      &                                            b)   return values 
                     c)      data types                                   d)   none of the mentioned 
           37)    What is the meaning of the following declaration? 
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                     int(*ptr[5])(); 
                     a)      ptr is pointer to function                   b)   ptr is array of pointer to function 
                     c)      ptr is pointer to such function which return type is array 
                     d)      ptr is pointer to array of function 
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                         AADHITHYA PG-TRB COMPUTER SCIENCE ,  KANCHEEPURAM- 9786851468 
            
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...Padasalai www net adhithya trb tet coaching centre kanchipuram sunder matric school pg computer science test what is new operator a allocates memory for an object or array b and returns particular pointer c used as return type when created d to declare any thing in program happens fails zero always throws exception either terminates the objects allocated using are destroyed they go out of scope not even if anytime throughout execution defined class still global have be which should with keyword colon arrow dot resolution address unallocated blocks delete empty all them cpp dynamic allocation done calloc malloc allocate following false statement about it can t overloaded garbage value automatically computes size data these release dynamically remove free both aadhithya kancheepuram valid ways integer by int p null during unsuccessful none does yes positive negative no resulted from void has destructor called after deallocation before destruction correct syntax single objectname member d...

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