Description : The dereferencing operator ………….. is used to access a member when we use pointers to both the object and the member. A) ->* B) .* C) Any of the above D) None of the above
Last Answer : A) ->*
Description : Match the following a) : : i) Pointer to member declarator b) : :* ii) Pointer to member operator c) ->* iii) Scope resolution operator A) a-ii, b-iii, c-i B) a-iii, b-i, c-ii C) a-i b-ii, c-iii D) a-iii, b-ii, c-i
Last Answer : B) a-iii, b-i, c-ii
Description : Some of the C++ operators cannot overloaded which are i) Member access operators (. And .*) ii) Conditional operator (? :) iii) Scope resolution operator (: :) iv) Size operator (sizeof) A) only i, ii and iii B) only ii, iii and iv C) only ii and iv D) All i, ii, iii and iv
Last Answer : D) All i, ii, iii and iv
Description : A ……………. takes a reference to an object of the same class as itself as an argument. A) Reference constructor B) Copy Constructor C) Self Constructor
Last Answer : B) Copy Constructor
Description : Automatic initialization of object is carried out using a special member function called ………… A) Friend B) Casting C) Reference Parameter D) Constructor
Last Answer : D) Constructor
Description : Which of the following is true about the static member variable in C++. i) It is initialized to zero when the first object of its class is created. Other initialization is also permitted. ii) It is visible only within ... , ii-True B) ii-False, ii-True C) i-True, ii-False D) i-False, iii-False
Last Answer : B) ii-False, ii-True
Description : State and describe use of pointer operator and address operator. Give one example of each.
Last Answer : Pointer operator:- * It is used to declare a pointer variable. Also used as "value at" operator to read value stored inside the address pointed by pointer. Example: int *ptr; Address operator:-& ... address of a variable can be stored in pointer variable. Example: int a,*ptr; ptr=&a;
Description : A pointer can hold A) Single address at a time B) Two addresses at a time C) Number of addresses at a time D) No address
Last Answer : A) Single address at a time
Description : Pointer holds A) Value of variable B) Address of variable C) Value and address of variable D) Always null
Last Answer : B) Address of variable
Description : Array is A) Primary data type B) Pointer data type C) Heterogeneous data type D) Homogenous data type
Last Answer : D) Homogenous data type
Description : In a queue, the initial values of front pointer f rare pointer r should be ….. and …….. respectively. A) 0 and 1 B) 0 and -1 C) -1 and 0 D) 1 and 0
Last Answer : B) 0 and -1
Description : If the queue is implemented with a linked list, keeping track of a front pointer and a rear pointer, which of these pointers will change during an insertion into a non-empty queue? (A) Neither of ... (B) Only front pointer changes (C) Only rear pointer changes (D) Both of the pointers changes
Last Answer : (C) Only rear pointer changes
Description : What does the following declaration mean ? int (*ptr) [10]; (A) ptr is an array of pointers of 10 integers. (B) ptr is a pointer to an array of 10 integers. (C) ptr is an array of 10 integers. (D) none of the above.
Last Answer : (B) ptr is a pointer to an array of 10 integers.
Description : What does the following expression means ? char *(*(* a[N]) ( )) ( ); (A) a pointer to a function returning array of n pointers to function returning character pointers. (B) a ... to characters (D) an array of n pointers to function returning pointers to functions returning pointers to characters.
Last Answer : Answer: A,B,C,D
Description : Consider an implementation of unsorted single linked list. Suppose it has its representation with a head and a tail pointer (i.e. pointers to the first and last nodes of the linked list). Given the ... the front node of the linked list. (D) Deletion of the last node of the linked list.
Last Answer : (D) Deletion of the last node of the linked list.
Description : The order of a leaf node in a B+ tree is the maximum number of children it can have. Suppose that block size is 1 kilobytes, the child pointer takes 7 bytes long and search field value takes 14 bytes long. The order of the leaf node is ............ (1) 16 (2) 63 (3) 64 (4) 65
Last Answer : Answer: All
Description : What error will be generated if a space is given between the logical AND operator (&&)? Will it be a compile-time or a run-time error?
Last Answer : Example: if(5>2 & & 6
Description : State True or False. i) While overloading operators new operator can be overloaded. ii) The binary operator such as +, -, * and must explicitly return a value. A) True, True B) True, False C) False, True D) False, False
Last Answer : C) False, True
Description : Which of the following operates cannot be overloaded? i) Size of operator (sizeof) ii) Scope resolution Operator iii) Conditional operator (?:) iv) Assignment Operator (=) A) i, ii, iii only B) ii, iii, iv only C) i, iii, iv only D) all i, ii, iii, iv
Last Answer : A) i, ii, iii only
Description : The ……………. Operator is known as insertion operator. A) >> B) > C)
Last Answer : C)
Description : Hierarchy decides which operator A) is most important B) is used first C) is fastest D) Operates on largest numbers
Last Answer : B) is used first
Description : . Costs for a computer based information system include the salaries of the system analysts and computer programmers. costs for a computer based information system include the ... ) Development, Development B) Development, Operating C) Operating, Development C) Operating, Operating
Last Answer : B) Development, Operating
Description : Which of the following is not comparison operator? A) B) < C) =< D) >=
Last Answer : C) =
Description : Which of the following is not a binary operator in relational algebra? A) Join B) Semi-Join C) Assignment D) Project
Last Answer : D) Project
Description : ………………….. operator is basically a join followed by a project on the attributes of first relation. A) Join B) Semi-Join C) Full Join D) Inner Join
Last Answer : B) Semi-Join
Description : Select operator is not a unary operator. ii) Project operator chooses subset of attributes or columns of a relation. A) i-True, ii-False B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False
Last Answer : C) i-False, ii-True
Description : The ............ operator preserves unmatched rows of the relations being joined. A) Inner join B) Outer join C) Union D) Union join
Last Answer : B) Outer join
Description : . Which of the following is a comparison operator in SQL? (A) = (B) LIKE (C) BETWEEN (D) All of the above
Last Answer : D) All of the above
Description : Cartesian product in relational algebra is (A) a Unary operator. (B) a Binary operator. (C) a Ternary operator. (D) not defined.
Last Answer : (B) a Binary operator.
Description : What is the output of the following piece of code when executed in Python shell? >>> a=("Check")*3 >>> a a) (‘Check’,’Check’,’Check’) b) * Operator not valid for tuples c) (‘CheckCheckCheck’) d) Syntax erro
Last Answer : c) (‘CheckCheckCheck’)
Description : What is the output of the following code? >>> a=(1,2,(4,5)) >>> b=(1,2,(3,4)) >>> a
Last Answer : a) False
Description : A fuzzy set A on R is ................. iff A(λx1 + (1 – λ)x2) ≥ min [A(x1), A(x2)] for all x1, x2 ∈ R and all λ ∈ [0, 1], where min denotes the minimum operator. (A) Support (B) α-cut (C) Convex (D) Concave
Last Answer : (C) Convex
Description : Refer the points as listed below: (a) What are the operator precedence rules ? (b) What are the operator associativity rules ? (c) What is the order of operand evaluation ? (d) Are there restrictions on operand evaluation side effects ? ... (d) (C) (a), (b) and (d) (D) (a), (b), (c) and (d)
Last Answer : (D) (a), (b), (c) and (d)
Description : The “PROJECT” operator of a relational algebra creates a new table that has always (A) More columns than columns in original table (B) More rows than original table (C) Same number of rows as the original table (D) Same number of columns as the original table
Last Answer : (C) Same number of rows as the original table
Description : A Boolean operator Ө is defined as follows: 1Ө1=1, 1Ө0=0, 0Ө1=0 and 0Ө0=1 What will be the truth value of the expression (xӨy)Өz = xӨ(yӨz)? (A) Always false (B) Always true (C) Sometimes true (D) True when x, y, z are all true
Last Answer : (B) Always true
Description : The mean-end analysis process centers around the detection of differences between the current state and the goal state. Once such a difference is isolated, an operator that can reduce the difference ... (A) backward planning (B) goal stack planning (C) operator subgoaling (D) operator overloading
Last Answer : (C) operator subgoaling
Description : A byte addressable computer has a memory capacity of 2 m Kbytes and can perform 2 n operations. An instruction involving 3 operands and one operator needs a maximum of (A) 3m bits (B) m + n bits (C) 3m + n bits (D) 3m + n + 30 bits
Last Answer : (D) 3m + n + 30 bits
Description : Which of the following statements is correct? (A) Every class containing abstract method must not be declared abstract. (B) Abstract class cannot be directly initiated with ‘new’ operator. (C) Abstract class cannot be initiated. (D) Abstract class contains definition of implementation.
Last Answer : Answer: B,C
Description : compiler optimization, operator strength reduction uses mathematical identities to replace slow math operations with faster operations. Which of the following code replacements is an illustration of operator strength reduction? (A) Replace P + ... * P or Replace 3 + 4 by 7. (B) Replace P * 32 by P
Last Answer : (B) Replace P * 32 by P
Description : Consider the following statements regarding relational database model: (a) NULL values can be used to opt a tuple out of enforcement of a foreign key. (b) Suppose that table T has only one candidate key. If Q is in 3NF, then it is ... true. (C) (b) and (c) are true. (D) (a), (b) and (c) are true.
Last Answer : (D) (a), (b) and (c) are true.
Description : Using which keyword we can access value of the instance variables and class variables of that class inside the method of that class itself. A) super B) final C) this D) either super or this
Last Answer : C) this
Description : ............... package is used by compiler itself. So it does not need to be imported for use. A) java.math B) java.awt C) java.applet D) java.lang
Last Answer : D) java.lang
Description : In …………….., the virus places an identical copy of itself into other programs or into certain system areas on the disk. A) Dormant phase B) Propagation phase C) Triggering phase D) Execution phase
Last Answer : B) Propagation phase
Description : . …………………….. is a form of virus explicitly designed to hide itself from detection by antivirus software. A) Stealth virus B) Polymorphic Virus C) Parasitic Virus D) Macro Virus
Last Answer : A) Stealth virus
Description : A ………………… attaches itself to executable files and replicates, when the infected program is executed, by finding other executable files to infect. A) Stealth virus B) Polymorphic Virus C) Parasitic Virus
Last Answer : C) Parasitic Virus
Description : State whether true of false. i) A worm mails a copy of itself to other systems. ii) A worm executes a copy of itself on another system. A) True, False B) False, True C) True, True D) False, False
Last Answer : C) True, True
Description : Implicit return type of a class constructor is: (A) not of class type itself (B) class type itself (B) a destructor of class type (D) a destructor not of class type
Last Answer : (B) class type itself
Description : If a function is friend of a class, which one of the following is wrong ? (A) A function can only be declared a friend by a class itself. (B) Friend functions are not members of a class, they are ... are members of a class. (D) It can have access to all members of the class, even private ones.
Last Answer : (C) Friend functions are members of a class.
Description : Implement a program to declare a class city with data members city name and state. Accept and display data for 1 object using pointer to object.
Last Answer : #include<iostream.h> #include<conio.h> class city { char city_name[20],state[20]; public: void accept() { cout<<"\nEnter city data:"; cout<<"\nName:"; ... ); ptr=&c; ptr->accept(); ptr->display(); getch(); }
Description : Describe pointer to object with an example.
Last Answer : When address of an object of a class is stored into the pointer variable of the same class type then it is pointer to object. This pointer can be used to access the data member and member functions of same class. ... (); // Invoking getdata()using pointer to object p1. ptr->display(); }