C++ Programming Online Test2 preparation for interview

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1.Which of the following operators can be overloaded?
. (dot or member access operator)	& (address-of operator)
sizeof operator	?: (conditional operator)

2.How do we declare an abstract class?
By providing at least one pure virtual method (function signature followed by ==0;) in a class	By declaring at least one method abstract using the keyword ‘abstract’ in a class
By declaring the class abstract with the keyword ‘abstract’	It is not possible to create abstract classes in C++

3.How do we declare an ‘interface’ class?
By making all the methods pure virtual in a class	By making all the methods abstract using the keyword ‘abstract’ in a class
By declaring the class as interface with the keyword ‘interface’	It is not possible to create interface class in C++

4.How many copies of a class static member are shared between objects of the class?
A copy of the static member is shared by all objects of a class	A copy is created only when at least one object is created from that class
A copy of the static member is created for each instntiation of the class	No memory is allocated for static members of a class

5.Which of the following is true about const member functions?
const members can be invoked on both const as well as nonconst objects	const members can be invoked only on const objects and not on nonconst objects
nonconst members can be invoked on const objects as well as nonconst objects	none of the above

6.When is std::bad_alloc exception thrown?
When new operator cannot allocate memory	When alloc function fails
When type requested for new operation is considered bad, this exception is thrown	When delete operator cannot delete the allocated (corrupted) object

7.Which header file should we include for using std::auto_ptr?
<memory>	<alloc>
<autoptr>	<smartptr>

8.STL is based on which of the following programming paradigms?
Structured Programming	Object Oriented Programming (OOP)
Functional Programming	Aspect Oriented Programming (AOP)

9.Which of the following correctly describes the meaning of ‘namespace’ feature in C++?
Namespaces refer to the memory space allocated for names used in a program	Namespaces refer to space between teh names in a program
Namespaces refer to space between the names in a program	namespaces provide facilities for organizing the names in a program to avoid name clashes

10.Which of the following is the most general exception handler that catches exception of any type?
catch(std::exception)	catch(std::any_exception)
catch(…)	catch()

11.STL is based on which of the following programmingparadigms?
Structured Programming	Object Oriented Programming (OOP)
Functional Programming	Aspect Oriented Programming (AOP)

12.Which of the following correctly describes the meaning of‘namespace’ feature in C++?
Namespaces refer to the memory space allocated for names used in a program	Namespaces refer to space between the names in a program
Namespaces refer to packing structure of classes in a program	Namespaces provide facilities for organizing the names in aprogram to avoid name clashes

13.Which of the following is the most general exception handler that catches exception of ‘any type’?
catch(std::exception)	catch(std::any_exception)
catch(…)	catch()

14.Which of the following relationship is known as inheritancerelationship?
‘has-a’ relationship	‘is-a’ relationship
association relationship	none of the above

15.Which of the following operators can be implemented as a nonmember operator?
= (assignment operator)	() (function call operator)
[] (array access operator)	+ (addition operator)

16.Which of the STL containers store the elements contiguously (in adjecent memory locations)?
std::vector	std::list
std::map	std::set

17.Which of the following is not recommended in a header file?
Type definitions (typedefs)	Class definitions
Function definitions	Template definitions

18.If the class name is X, what is the type of its “this” pointer (in a nonstatic, non-const member function)?
const X* const	X* const
X*	X&

19.Which of the following is the most preferred way of throwing and handling exceptions?
Throw by value and catch by reference.	Throw by reference and catch by reference.
Throw by value and catch by value	Throw the pointer value and provide catch for teh pointer type.

20.If class A is friend of class B and if class B is friend of class C, which of the following is true?
Class C is friend of class A	Class A is friend of class C
Class A and Class C do not have any friend relationship	None of the above