Std 12 Computer Chapter 6 object oriented concept important mcqs
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This document presents a series of multiple-choice questions focused on object-oriented programming concepts and principles, including definitions, methodologies, and properties associated with programming languages like Java. It covers topics such as the characteristics of objects, abstraction, encapsulation, inheritance, and polymorphism, as well as distinctions between different programming paradigms. The content is structured to facilitate understanding and assessment in the field of object-oriented programming.
Std 12 Computer Chapter 6 object oriented concept important mcqs
- 1. CHAPTER 6 Object Oriented Concepts Presented by Hiral K Soni Guided by Nuzhat Mam
- 2. Important MCQs……. 1)What is the full form of RAD? a) RapidAccess Development b) RapidApplication Development c) RandomAccess Development d) Read Application Development 2) Java programming language uses which type of methodology to analysis, design and implementation of software? a) Structure/Procedure Programming b) Object Oriented Programming c) Both ( and ( d) System Oriented programming language PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 3. 3) Software developed using which methodology are proclaimed to be more reliable , easier to maintain , reuse and enhance? a) Binary level programming b) Higher level programming c) Object oriented programming d) None of these 4) By using which kind of programming language, flexibility is gained by being able to change or replace modules without disturbing other parts of code? a) Procedural programming b) Higher level programming language c) Object-Oriented programming language d) None of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 4. 5) When did object-oriented programming start? a) 1950 b) 1960 c) 1970 d) 1980 6) Since _______ object oriented programming become the main paradigm to create new software. a) Mid 1999s b) Mid 1980s c) Mid 1970s d) Mid 1960s PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 5. 7)Which of the following power of programming language who enables the programmer to create modular, reusable and extendable code? a) Procedure language programming b) Object oriented programming c) Object open programming d) None of these 8) Which of the following best suits to java? a) A procedure Programming language b) An object oriented Programming c) A Query language d) All of the above PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 6. 9) The way of programming can be divided into how many categories? a) 2 b) 3 c) 4 d) 5 10)Which of the following is a way of programming ? a) Structure/Procedure Programming b) Object oriented Programming c) Both ( A)and (B) d) None of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 7. 11) In which way of programming, the focus is on writing function or procedures which operate on data? a) Object oriented Programming b) Procedure Programming c) A Query language d) All of the given options 12) Which are the two core elements for any computer program? a) Function and Method b) Data and Layout c) Layout and Method d) Data and Function PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 8. 13) In the structured programming data and method are called ______elements. a) Same b) Different c) Symbolic d) Special 14) In the object oriented programming data and method are called _____elements. a) Same b) Different c) Symbolic d) Special PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 9. 15) In object oriented methodology, the focus is on which of the following entities? a) Data b) Functions c) Object d) All of these 16) In object oriented programming, the focus is on object which contain both _________ together. a) Class and object b) Data and Functionality c) Function and Method d) Attribute andVariable PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 10. 17) Which of the following programming language does not support object-oriented programming? a) asp.net b) java c) PHP d) C 18) How many specific properties must be supported by an object oriented computer language? a) 2 b) 3 c) 4 d) 5 PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 11. 19) A computer language is object oriented, if they support which of the following object properties? a) abstract, extract, concept, inheritance b) abstraction, encapsulation, polymorphism, inheritance c) abstraction, extract, polymorphism, inheritance d) abstraction, capsulation, polymorphism, inheritance 20)Which of the following statement is true for object oriented programming language? i. It uses object as its fundamental building block ii. Similar objects are classified using a concept of class iii. Abstraction, Encapsulation, Polymorphism and Inheritance is its basic properties a) only (i) & (ii) b) only (ii) & (iii) c) only (i) & (iii) d) (i), (ii) & (iii) PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 12. 21) In real world , object can be explained through _________things. a) 2 b) 3 c) 4 d) 5 22) Objects can be of explained through which things (name)? a) Data and Function b) Procedure-oriented and Object-oriented c) Concrete and Abstract d) All of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 13. 23) The objects that we can’t see and touch are called _______objects. a) Concrete objects b) Abstract objects c) Both ( A) and (B) d) None of these 24) _______is the example of abstract object. a) Concepts like date and time b) Persons cars computers c) Both (A) and(B) d) none of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 14. PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM 25) In object-oriented terminology, characteristics of an object are known as _______ a) Properties b) Attributes c) Entity d) Both (A) or (B) 26) Which of the following is used to distinguish object from each other? OR To identify the objects, we use the values of these attributes, these values are called what? a) Attributes b) State c) Behavior d) All of these
- 15. 27) In object oriented concept, the behavior associated with objects is known as which of the following? a) Attribute b) State c) Method d) All of these 28) Any real world object can be described in terms of what? a) Identity (What it is called) b) Its state ( what it is) c) Its behaviour (what it does) d) All of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 16. 29) In object oriented programming, the attributes that describe the object are also referred to as ____. a) Method b) Behavior c) State d) Data field 30) The data attributes and behavioral methods associated with an object are collectively referred to as its ________________ a) Method or function b) Members or features c) State or characteristic d) None of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 17. 31) Which of the following is used to define common features of similar objects? a) Class b) Object c) Methods d) Variable 32) ______ can be considered as a blueprint for various objects. a) State b) Class c) Behavior d) Object PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 18. PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM 33) A _____ is a template for multiple objects with similar features. a) State b) Class c) Behavior d) Object 34) Which of the following describes a group of objects with similar attributes and common behavior? a) State b) Class c) Behavior d) Object
- 19. 35) Which of the following is a general concept used to embody all the common features of a particular set of objects? a) Procedures b) Polymorphism c) Data field d) Class 36) What is instance of class or What is real world entities? a) Behavior b) Attribute c) Value d) Object PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 20. 37) In object oriented programming, which of the following property keeps the data safe from unintended actions and inadvertent access by outside objects? a) Messaging b) Polymorphism c) Encapsulation d) Data abstraction 38) In object oriented programming, data and methods that manipulate data are guarded against modification or misuse by other components of program are known as what? a) Abstraction b) Encapsulation c) Messaging d) Polymorphism PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 21. 39) Which of the following is the mechanism of providing protection of data and methods of a program? a) Abstraction b) Messaging c) Encapsulation d) Polymorphism 40)Which of the following is provided using encapsulation? a) Data protection b) Data sharing c) Separation of data & methods d) All of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 22. 41) In encapsulation only the object that ____ the data can change its content. a) Owner b) Owns c) Private d) Members 42) Which of the following enables to represent data in which the implementation details are hidden? a) Encapsulation b) Abstraction c) Both (A) and (B) d) Inheritance PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 23. 43)Which of the following is enabled by data abstraction? a) Data protection b) Data hiding c) To hide implementation details of method manipulating the data d) All of these 44)Which of the following is a concept that hides the complexity, it says what is does, but not how it is done? a) Polymorphism b) Message c) Abstraction d) Data PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 24. 45) Data abstraction is a technique that relies on the separation of ____ and implementation. a) Programming b) Implemented c) Interface d) Functions 46) The data abstraction provides _____ for our use. a) Skeleton/templates b) Data hiding c) Internal implementation d) Abstract behavior PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 25. 47) What is the full form ofADT? a) Absolute DataType b) Above DataTypes c) Abstract DataTypes d) Abstract DataTransfer 48) In ADT , we simply define a ___ and ___ on it. a) Implementation and abstraction b) Data and type c) Operations and types d) Data type and set of operations PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 26. 49) Which are examples of Data abstraction ? a) asp.net b) PHP c) classes in C / java d) structures in C/C++ 50) In object oriented terminology a call to a method is called what? a) Behavior b) Class c) Message d) Abstract data type PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 27. 51) What is known as feature in object oriented programming allows defining more than one method having same name but different signature in single class? a) Overloading b) Messaging c) Encapsulation d) Polymorphism 52) Polymorphism is achieved using how many types of overloading? a) 2 b) 3 c) 4 d) 5 PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 28. 53) Which features of object oriented programming allows defining more than one method having same name but different signature in single class? a) Messaging b) Method overloading c) Aggregation d) Encapsulation 54) In polymorphism method having same name but different number of parameters and type is called________ a) Composition b) Signature c) Message d) Polymorphism PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 29. 55) With which of the following options polymorphism cannot be achieved? a) Method Overloading b) Operator Overloading c) Data hiding d) All of the above 56) Which of the following is the part of object oriented class diagram? a) Data encapsulation b) Data abstraction c) Polymorphism d) All of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 30. 57) An aggregation model refers to which of the following relationships? a) ‘is-a’ relationship b) ‘is-like’ relationship c) ’ a-part-of’ relationship d) All of these 58) Aggregation represents which type of relationship between two classes? a) Non exclusive b) Exclusive c) is-a-kind-of d) None of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 31. 59) When objects of one class are composed of objects of other class is called what ? a) Aggregation b) Encapsulation c) Inheritance d) Polymorphism 60) Aggregation represents which type of relationship between classes? a) is-a b) is-a-kind-of c) have-a d) has-a PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 32. 61) If an object of aggregating class is ______ , its part class object also will get deleted. a) Deleted b) Updated c) Appended d) Modified 62) _____ is a strong type of aggregation where the lifetime of the part class depends on the existence of the owner class. a) Aggregation b) Composition c) Inheritance d) Polymorphism PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 33. 63) Composition model refers to which of the following relationships? a) Non exclusive b) Exclusive c) ‘a-kind-of’ relationship d) None of the given options 64) In class diagram, composition is represented using which of the following symbols? a) Empty diamond b) Filled diamond c) Empty triangle d) All of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 34. 65) In object oriented concept, which symbol is used to represent aggregation? a) Empty diamond b) Filled diamond c) Rectangle d) Square 66) The class that is contained in owner class is known as _____________ a) Subject class b) Part class c) Aggregated class d) All of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 35. 67) The class that contains object of other class is known as ___________ a) Owner class b) Aggregated class c) Sub class d) All of these 68) In which of the following, the class that forms part of the owner class can exist independently and the life of an object of the part class is not determined by the owner class? a) Inheritance b) Aggregation c) Polymorphism d) Data-Abstraction PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 36. 69) Aggregation or composition represents _____relationship between classes. a) ‘has –a’ or ‘a-part of’ b) ‘complete’ or ‘a-part –of’ c) ‘complete’ or ‘is –not-part-of’ d) ‘incomplete’ or ‘a-part-of’ 70) An Inheritance model refers to which of the following relationships? a) ‘is-a’ relationship b) ‘has-a’ relationship c) ’ a-part-of’ relationship d) All of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 37. 71) What is other name of Inheritance? a) 'is-a' relationship b) Generalization c) 'a kind of ' relationship d) All of these 72) In object oriented terminology, which of the following statement is true for class? (i) New class is called sub class or child class or derived class (ii) Existing class is called super class or parent class or base class a) only (i) b) only (ii) c) Both (i) and (ii) d) None of these PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 38. 73) What is called new class in object oriented terminology? a) Sub class b) Child class c) Derived class d) All of these 74) In class diagram, which symbol is used to represent inheritance? a) Empty diamond b) Filled diamond c) Arrow symbol d) Empty triangle PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 39. 75) In object oriented terminology, sub class or child class or derived class indicated what for inheritance? a) Base class b) Existing class c) Super class d) New class 76) In inheritance, which type of relationship exists between super class and sub class? a) a kind of b) exclusive c) is-like d) non-exclusive PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 40. PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM 77) In Inheritance , common attributes and methods are defined in ______ class in inheritance a) Sub class b) Super class c) Sub / super class d) Public 78) Which class is specialized version with additional attributes and methods? a) Super class b) Sub class c) Child class d) Both (B) and (C)
- 41. 79) In object oriented terminology, existing class is also known as which class in inheritance? a) Owner class b) Parent class c) sub class d) Both (A) or (B) 80) Which of the following refers to the capability of defining a new class of objects that inherits the characteristics of another existing class? a) Encapsulation b) Inheritance c) Messaging d) Abstract PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 42. 81) In Object-oriented terminology, with reference to Inheritance, existing class is also called which of the following? a) Super class b) Parent class c) Base class d) All of the above 82) ‘Teacher is a kind of person’ is an example of which of the following options? a) Aggregation b) Inheritance c) Data Abstraction d) Encapsulation PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 43. 83) Inheritance is of how many types ? a) 2 b) 4 c) 3 d) 5 84) The class that is derived from one class is known as which type of inheritance ? a) Sub class b) Multiple inheritance c) Multilevel inheritance d) Derived inheritance PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 44. 85) The class that is derived from two or more class is known as which type of inheritance ? a) Multiple inheritance b) Composed inheritance c) Additional inheritance d) Multilevel inheritance 86) There may be a classical ______of inheritance between classes. a) Hierarchy b) Relations c) Indication d) Logic PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM
- 45. PREPARED BY HIRAL SONI | GUIDED BY NUZHAT MAM