The following OOPS Concepts MCQs have been compiled by our experts through research, in order to test your knowledge of the subject of OOPS Concepts. We encourage you to answer these 60+ multiple-choice questions to assess your proficiency.
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A. To increase reusability and maintainability of code.
B. To increase speed of writing code.
C. To increase data coupling.
D. Because other programming paradigms have become obsolete.
A. magic methods on all classes
B. how wrestling referees determine a winner
C. an optimization for compilers
D. a way of managing object lifetimes
A. True
B. False
A. True
B. False
A. The public methods.
B. All of the code in the program.
C. The Java console.
D. The private methods.
A. Singleton class
B. Abstract class
C. Friend class
D. Virtual class
A. New properties written from scratch.
B. One object generating another object.
C. One object writing new properties for another.
D. One object acquiring the properties of another.
A. False
B. True
A. The class, “clsCalculation” with two functions, both named “Add”.
B. Two classes named “clsCalculation” with the single function, “add”.
C. Two functions named “clsCalculation”.
D. Two classes named “add”.
A. False
B. True
A. The definition of semantic models.
B. The understanding of programming models.
C. The comprehension of relational models.
D. The definition of logistic models.
A. updater
B. getter
C. setter
D. deleter
A. A class variable.
B. A varying variable.
C. An early variable.
D. An instance variable.
A. The difference in interface.
B. The total differences.
C. The common interface.
D. The multiple interfaces.
A. True
B. False
A. Only contain abstract methods
B. Be subclassed
C. Be instantiated
A. True
B. False
C. depends
A. A program corruption.
B. Syntactically legal strings have occurred.
C. Syntactically illegal strings have occurred.
D. A system failure.
A. Overhauled, static.
B. Overloaded, static.
C. Overloaded, late.
D. Overloaded, dynamic.
A. Classes describe different features.
B. Classes are used to manage metadata.
C. Classes are used to define specific types.
D. Classes define objects.
A. make any copies of this object
B. to create a second copy of all contained subobjects
C. make any copies of the parent object
D. make any copies of children objects
A. OOPS-based and object-based
B. System based and program-based.
C. Logic-based and inference-based.
D. Prototype-based, or class-based.
A. where virtually nothing is inherited
B. the base class is replicated for each derived class
C. not an OOP term
D. where only one base class object is created
A. Feline, Canine
B. Canine, Mammal
C. Feline, Animal
D. Feline, Lion
A. Programming metadata.
B. Accentuated grammars.
C. Attribute phonetics.
D. Attribute grammars.
A. only to subclasses
B. True
C. only through methods
D. False
A. Syntactic congruency.
B. Logical assumptions.
C. Mathematical truths.
D. Termination proofs.
A. interfaces cannot have properties whereas abstract classes can
B. interfaces can provide default implementation whereas abstract classes cannot provide implementations
C. abstract classes can provide default implementation whereas interfaces cannot provide implementations
D. interfaces cannot have methods whereas abstract classes can
A. Composition has complex namespace clashes.
B. It isn't considered a simpler method.
C. Composition lacks the namespace clash, and the complicated inheritance hierarchies.
D. It is filled with complicated inheritance hierarchies.
A. It is a means of achieving object-oriented behavior sharing.
B. In Prototyping, a similar object can be defined by referring to the original one as a template and then listing how the new object differs from the original one.
C. JavaScript is a common example of prototyping model.
D. None of the above
A. It can be a friend of any other class
B. It implements early binding
C. Prototype of function in base and derived class must be identical
D. It implements polymorphism
A. Insulating data from being accessed by the program
B. Insulating data from being accessed by the program directly
C. Insulating data from being accessed by the members directly
D. None of the above
A. A class is an instance factory
B. A class is a template for creating an entity
C. A class is a set of all the instances of a pattern
D. None of the above
A. Yes
B. No
A. 2 bytes
B. 8 bytes
C. 16 bytes
D. 0 byte
A. True
B. False
A. 5
B. 8
C. 4
D. Any number of times
A. Class A
B. Class B
C. Class C
D. Class B and Class C
A. It saves the overhead of calling function
B. It must contain only a few lines of code
C. It allows recursion
D. It should not contain static variables
A. C
B. FORTRAN
C. Small talk
D. Cobol
A. True
B. False
A. Single
B. Multiple
C. Hierarchical
D. Ternary
E. Multilevel
A. Polymorphism is a process by which a class can exist in multiple forms
B. Polymorphism is a process by which a class can exist in only two forms
C. Polymorphism is a process by which different instances of a class displays different behavior
D. Polymorphism is a process by which different instances of a class displays similar behavior
A. Static keyword
B. Converting all member functions into 'const'
C. Converting a function into virtual
D. Converting a function into pure virtual
A. Multiple inheritance
B. Hybrid inheritance
C. Multi-level inheritance
D. Multi-class inheritance
A. True
B. False
A. Early binding
B. Late binding
C. Pre-Mature binding
D. None of the above
A. A is a B
B. B is a A
C. C is a B
D. B is a C
A. Array
B. Class object
C. Reference variable
D. Header File
A. True
B. False