The Global Open University 2012-1st Year M.C.A Global open University of Object Oriented Analysis - Question Paper

c. a class of objects
d. a classification of objects
41) In UML diagram of a class
a. state of object cannot be represented
b. state is irrelevant
c. state is represented as an attribute
d. state is represented as a outcome of an
operation
42) Attributes are assigned value
a. when operations are performed on an
object
b. when instances of objects are described
c. when methods are invoked
d. when classes are identified
43) A query operation on a object
a. has side effect
b. has no side effects
c. modifications the state of an object
d. is not allowed
44) An instance of an object is created by
a
a. query operation
b. update operation
c. constructor operation
d. open operation
45) Equal to is a ____ operator.
a. Compiler
b. Variable
c. Logical
d. Comparison
46) An update operation in an object
instance
a. updates the class
b. has no side effects
c. deletes an instance
d. alters values of attribute(s) of an object
instance
47) In object-oriented design
a. operations and methods are iden2cal
b. methods specify algorithms whereas
operations only state what is to be done
c. methods do not change values of
attributes
d. methods and constructor are identical
48) By abstraction in object-oriented
modelling we mean picking
a. only attributes improper to model an
object
b. only operations
c. both opera2on and attributes with
operations improper to model an object
d. the improper abstract data kind
49) By encapsulation in object-oriented
modelling we mean
a. encapsula2ng data and programs
b. hiding attributes of an object from users
c. hiding operations on object from users
d. hiding implementation details of methods
from users of objects
50) Inheritance in object-oriented
system is used to
a. create new classes from existing classes
b. add new operations to exis2ng operations
c. add new attributes to exis2ng attributes
d. add new states to exis2ng states
51) When a subclass is created using
inheritance the resulting class
a. may have only attributes of parent class
b. may have only operations of parent class
c. may have new operations only in addition
to those in parent class
d. may have new attributes and new
operations in addition to those of the
parent class
52) By polymorphism in object-oriented
modelling we mean
a. the ability to manipulate objects of
various distinct classes
b. . the ability to manipulate objects of
various distinct classes knowing only their
common properties
c. use of polymorphic operations
d. use of similar operations to do similar
things
53) A polymorphic operation
a. has identical name
b. has identical name but uses various
methods depending on class
c. uses various methods to perform on the
identical class
d. uses polymorphic method
54) An object is opted for modelling a
system given
a. its attributes are invariant during opera2on
of the system
b. its attributes change during opera2on of
the system
c. it has numerous attributes
d. it has no attributes relevant to the system
55) An object is considered an external
entity in object-oriented modelling
a. its attributes are invariant during opera2on
of the system
b. its attributes change during opera2on of
the system
c. it has numerous attributes
d. it has no attributes relevant to the system
56) Object-oriented system modelling
using CRC method provide
a. Java programs for the system
b. C++ programs for the system
c. Classes of the system, their responsibili2es
and collabora2ng classes
d. Objective C programs for the system
57) The expansion of the acronym CRC is
a. Collec2ng Responsibili2es Classes
b. Collabora2ng with Relevant Classes
c. Class Responsibili2es and Collaborators
d. Crea2ng Relevant Classes
58) An Interaction Diagram should be
associated with:
a. a Use Case
b. an Ac2vity Diagram.
c. a CRC card.
d. a State Transition Diagram
59) Classes should be grouped into
packages by:
a. project team organiza2on.
b. classes that are related to the identical overall
services.
c. classes that work together in the identical
interac2on diagrams.
d. the class diagrams they appear in
60) Which of the subsequent is NOT a UML
mechanism used to arrange use cases?
a. Generaliza2on
b. Override
c. Extend
d. Include
61) In a well-designed layered
architecture, which layers should know
about which?
a. Model knows View and Persistence, View
knows Model and Persistence
b. View knows Model, Model knows
Persistence
c. View knows Model, Persistence knows View
and Model
d. View knows Model, Model knows View and
Persistence, Persistence knows Model
62) Abstraction, encapsulation,
inheritance, polymorph area.
Procedural programming
b. Objects
c. OOPS concepts
d. Algorithmic
63) GUI stands for
a. great user interface
b. graphical user interface
c. graphics usable implementation
d. graphical user implementation
64) HTML stands for
a. hyper text made lay
b. high text making lay
c. hyper text markup language
d. hyper text mark language
65) An exception in which we try to
access on object through a null reference
a. Null exception
b. pointer exception
c. zero exception
d. no exception
66) A character variable can at time store
a. one character
b. eight character
c. 254 character
d. none of the above
67). C++ is a -
a. MLL
b. HLL
c. ALL
d. fourth gen. Lang
68) Bitwise operator allows youa.
Bit coordina2on
b. Complement
c. Bit manipula2on
d. Assignment
69) Ternary operator are basically
shorthand ofa.
Go to
b. While
c. If else
d. If else while
70) What variables can a method MF3
access?
a. A2,B2.C2
b. C2,C1
c. A2,,B2,B1,C2,,C1
d. A1,A2,B1,B2.C1,C2

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