MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 916 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Programming knowledge and support exam preparation. Choose a topic below to get started.
| 701. |
In multi-level inheritance(all public) , the public members of parent/superclass will ________ |
| A. | Will continue to get inherited subsequently |
| B. | Will not be inherited after one subclass inheritance |
| C. | Will not be available to be called outside class |
| D. | Will not be able to allocated with any memory space |
| Answer» B. Will not be inherited after one subclass inheritance | |
| 702. |
If a class doesn’t have public members, then________ |
| A. | None of its members will be able to get inherited |
| B. | None of its instance creation will be allowed |
| C. | None of its member function can be called outside the class |
| D. | None of its data members will be able to get initial value |
| Answer» D. None of its data members will be able to get initial value | |
| 703. |
Which among the following is true for public class? |
| A. | There can be more than one public class in a single program |
| B. | Public class members can be used without using instance of class |
| C. | Public class is available only within the package |
| D. | Public classes can be accessed from any other class using instance |
| Answer» E. | |
| 704. |
Which specifier can be used to inherit protected members as protected in subclass but public as public in subclass? |
| A. | Private |
| B. | Default |
| C. | Public |
| D. | Protected |
| Answer» D. Protected | |
| 705. |
A class has its default constructor defined as public. Class B inherits class A privately. The class: |
| A. | B will not be able to have instances |
| B. | Only A can have instances |
| C. | Only B can have instances |
| D. | Both classes can have instances |
| Answer» E. | |
| 706. |
Which among the following for public specifier is false? |
| A. | The static members can’t be public |
| B. | The public members are available in other packages too |
| C. | The subclasses can inherit the public members privately |
| D. | There can be only one public class in java program |
| Answer» B. The public members are available in other packages too | |
| 707. |
How many public class(s) (outermost) can be there in a java program? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | As required |
| Answer» B. 2 | |
| 708. |
If members of a super class are public, then________ |
| A. | All those will be available in subclasses |
| B. | None of those will be available in subclasses |
| C. | Only data members will be available in subclass |
| D. | Only member functions will be available in subclass |
| Answer» B. None of those will be available in subclasses | |
| 709. |
We can reduce the visibility of inherited methods. |
| A. | True |
| B. | false |
| Answer» C. | |
| 710. |
Which among the following can be used for outermost class access specifier in java? |
| A. | Private |
| B. | Public |
| C. | Default |
| D. | Default or Public |
| Answer» E. | |
| 711. |
Which among the following have least security according to the access permissions allowed? |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Public |
| Answer» E. | |
| 712. |
If the members have to be accessed from anywhere in program and other packages also, which access specifier should be used? |
| A. | Public |
| B. | Private |
| C. | Protected |
| D. | Default |
| Answer» B. Private | |
| 713. |
If a class have default constructor defined in private access, and one parameter constructor in protected mode, how will it be possible to create instance of object? |
| A. | Define a constructor in public access with different signature |
| B. | Directly create the object in the subclass |
| C. | Directly create the object in main() function |
| D. | Not possible |
| Answer» B. Directly create the object in the subclass | |
| 714. |
Protected access is same as default access that is given implicitly in java if no specifier is mentioned. |
| A. | True |
| B. | False |
| Answer» C. | |
| 715. |
Which among the following can use protected access specifier? |
| A. | Members which may be used in other packages |
| B. | Members which have to be secure and should be used by other packages/subclass |
| C. | Members which have to be accessed from anywhere in the program |
| D. | Members which have to be as secure as private but can be used by main() function |
| Answer» C. Members which have to be accessed from anywhere in the program | |
| 716. |
If protected members are to be accessed from outside the class then__________ |
| A. | Members must be inherited publicly in subclass |
| B. | Members must accessed using class pointers |
| C. | Members must be accessed as usual |
| D. | Members must be made public |
| Answer» E. | |
| 717. |
If protected inheritance is used then _____ |
| A. | Public members become public in subclass |
| B. | Protected members become public in subclass |
| C. | Protected members become protected in subclass |
| D. | Protected and Public members become protected in subclass |
| Answer» E. | |
| 718. |
If all the members are defined in protected specifier then ( Constructors not considered ): |
| A. | Instance of class can’t be created |
| B. | Instance of class can be created anywhere |
| C. | Instance of class can be created only in subclasses |
| D. | Instance of class can be created only in main() function |
| Answer» C. Instance of class can be created only in subclasses | |
| 719. |
Protected members differ from default members as_______ |
| A. | Protected members can be accessed outside package using inheritance, but default can’t |
| B. | Default members can be accessed outside package using inheritance, but protected can’t |
| C. | Protected members are allowed for inheritance but Default members are not allowed |
| D. | Both are same |
| Answer» B. Default members can be accessed outside package using inheritance, but protected can’t | |
| 720. |
If the protected members are to be made accessible only to the nearest subclass and no further subclasses, which access specifier should be used in inheritance? |
| A. | The sub class should inherit the parent class privately |
| B. | The sub class should inherit the parent class as protected |
| C. | The sub class should inherit the parent class as public |
| D. | The sub class can use any access modifier |
| Answer» B. The sub class should inherit the parent class as protected | |
| 721. |
If a constructor is defined in protected access, then. |
| A. | It’s instance can be created inside the subclasses |
| B. | It’s instance can be created anywhere in the program |
| C. | It’s instance can be created inside the subclasses and main() function |
| D. | It’s instance can be created inside the parent class only |
| Answer» B. It’s instance can be created anywhere in the program | |
| 722. |
Which among the following best describes the protected specifier? |
| A. | Members are most secure and can’t be used outside class |
| B. | Members are secure but can be used outside the class |
| C. | Members are secure as private, but can be inherited |
| D. | Members are secure like private, but can’t be inherited |
| Answer» D. Members are secure like private, but can’t be inherited | |
| 723. |
Private member functions can be overloaded. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 724. |
Choose the correct option for the code given below class A{ static int c=0; public: A(){ c++; } }; |
| A. | Constructor will make c=1 for each object created |
| B. | Constructor will make c=0 for each object created |
| C. | Constructor will keep number of objects created |
| D. | Constructor will just initialize c=0 then increment by 1 |
| Answer» D. Constructor will just initialize c=0 then increment by 1 | |
| 725. |
Which access specifier is/are most secure during inheritance? |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Protected |
| Answer» B. Default | |
| 726. |
If private members has to be accessed directly from outside the class but the access specifier must not be changed, what should be done? |
| A. | Specifier must be changed |
| B. | Friend function should be used |
| C. | Other public members should be used |
| D. | It is not possible |
| Answer» C. Other public members should be used | |
| 727. |
Which among the following is correct to call a private member from outside the class? |
| A. | object.memberfunction( parameters ); |
| B. | object->memberfunction( parameters ); |
| C. | object->memberfunction( parameteres); or object.memberfunction( parameters ); |
| D. | Not possible |
| Answer» E. | |
| 728. |
If a function has to be called only by using other member functions of the class, what should be the access specifier used for that function? |
| A. | Private |
| B. | Protected |
| C. | Public |
| D. | Default |
| Answer» B. Protected | |
| 729. |
Which specifier should be used for member functions of a class? |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Public |
| Answer» E. | |
| 730. |
Which access specifier is usually used for data members of a class? |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Public |
| Answer» B. Default | |
| 731. |
Which access specifier should be used so that all the parent class members can be inherited and accessed from outside the class? |
| A. | Private |
| B. | Default or public |
| C. | Protected or private |
| D. | Public |
| Answer» E. | |
| 732. |
If an abstract class has all the private members, then _________ |
| A. | No class will be able to implement members of abstract class |
| B. | Only single inheritance class can implement its members |
| C. | Only other enclosing classes will be able to implement those members |
| D. | No class will be able to access those members but can implement. |
| Answer» B. Only single inheritance class can implement its members | |
| 733. |
If class B inherits class A privately. And class B has a friend function. Will the friend function be able to access the private member of class A? |
| A. | Yes, because friend function can access all the members |
| B. | Yes, because friend function is of class B |
| C. | Yes, because friend function is of class B |
| D. | No, because friend function can access private member of class A also |
| Answer» D. No, because friend function can access private member of class A also | |
| 734. |
On which specifier’s data, does the size of a class’s object depend? |
| A. | All the data members are added |
| B. | Only private members are added |
| C. | Only public members are added |
| D. | Only default data members are added |
| Answer» B. Only private members are added | |
| 735. |
Which access specifier should be used in a class where the instances can’t be created? |
| A. | Private default constructor |
| B. | All private constructors |
| C. | Only default constructor to be public |
| D. | Only default constructor to be protected |
| Answer» C. Only default constructor to be public | |
| 736. |
If class A has add() function with protected access, and few other members in public . Then class B inherits class A privately. Will the user will not be able to call _________ from object of class B. |
| A. | Any function of class A |
| B. | The add() function of class A |
| C. | Any member of class A |
| D. | Private, protected and public members of class A |
| Answer» E. | |
| 737. |
If a class has all the private members, which specifier will be used for its implicit constructor? |
| A. | Private |
| B. | Public |
| C. | Protected |
| D. | Default |
| Answer» C. Protected | |
| 738. |
Which specifier allows a programmer to make the private members which can be inherited? |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Protected and default |
| Answer» D. Protected and default | |
| 739. |
Which access specifier is used when no access specifier is used with a member of class (java)? |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Public |
| Answer» C. Protected | |
| 740. |
Which among the following can restrict class members to get inherited? |
| A. | Private |
| B. | Protected |
| C. | Public |
| D. | All three |
| Answer» B. Protected | |
| 741. |
Which among the following can be used together in a single class? |
| A. | Only private |
| B. | Private and Protected together |
| C. | Private and Public together |
| D. | All three together |
| Answer» E. | |
| 742. |
How many types of access specifiers are provided in OOP (C++)? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 743. |
What happens when an object is passed by reference? |
| A. | Destructor is not called |
| B. | Destructor is called at end of function |
| C. | Destructor is called when function is out of scope |
| D. | Destructor is called when called explicitly |
| Answer» B. Destructor is called at end of function | |
| 744. |
When an object is passed to a function, its copy is made in the function and then: |
| A. | The destructor of the copy is called when function is returned |
| B. | The destructor is never called in this case |
| C. | The destructor is called but it is always implicit |
| D. | The destructor must be user defined |
| Answer» B. The destructor is never called in this case | |
| 745. |
Which among the following is correct for destructors concept? |
| A. | Destructors can be overloaded |
| B. | Destructors can have only one parameter at maximum |
| C. | Destructors are always called after object goes out of scope |
| D. | There can be only one destructor in a class |
| Answer» E. | |
| 746. |
When is it advised to have user defined destructor? |
| A. | When class contains some pointer to memory allocated in class |
| B. | When a class contains static variables |
| C. | When a class contains static functions |
| D. | When a class is inheriting another class only |
| Answer» B. When a class contains static variables | |
| 747. |
Global destructors execute in ___________ order after main function is terminated |
| A. | Sequential |
| B. | Random |
| C. | Reverse |
| D. | Depending on priority |
| Answer» D. Depending on priority | |
| 748. |
Destructors can be ________ |
| A. | Abstract type |
| B. | Virtual |
| C. | Void |
| D. | Any type depending on situati |
| Answer» C. Void | |
| 749. |
Destructors doesn’t accept parameters. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 750. |
How the constructors and destructors can be differentiated? |
| A. | Destructor have a return type but constructor doesn’t |
| B. | Destructors can’t be defined by the programmer, but constructors can be defined |
| C. | Destructors are preceded with a tilde (~) symbol, and constructor doesn’t |
| D. | Destructors are same as constructors in syntax |
| Answer» D. Destructors are same as constructors in syntax | |