26953268
Beschreibung
Quiz von PathaPadha Support, aktualisiert more than 1 year ago
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Erstellt von PathaPadha Support
vor fast 4 Jahre
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Frage 1
Frage
Which of the following represents a distinctly identifiable entity in the real world?
Antworten
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A class
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An object
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A method
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A data field
Frage 2
Frage
Which of the following represents a template, blueprint, or contract that defines objects of the same type?
Antworten
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A class
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An object
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A method
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A data field
Frage 3
Frage
Which of the following keywords mark the beginning of the class definition?
Antworten
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def
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return
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class
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All of the above.
Frage 4
Frage
Which of the following is required to create a new instance of the class?
Antworten
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A constructor
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A class
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A value-returning method
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A None method
Frage 5
Frage
Which of the following statements is most accurate for the declaration x = Circle()?
Antworten
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x contains an int value.
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x contains an object of the Circle type.
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x contains a reference to a Circle object.
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You can assign an int value to x.
Frage 6
Frage
What will be the output of the following code snippet?
class Sales:
def __init__(self, id):
self.id = id
id = 100
val = Sales(123)
print (val.id)
Antworten
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SyntaxError, this program will not run
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100
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123
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None of the above
Frage 7
Frage
Which of the following statements are correct?
Antworten
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A reference variable is an object.
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A reference variable refers to an object.
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An object may contain other objects.
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An object can contain the references to other objects.
Frage 8
Frage
What will be the output of the following?
s = "\t\tWelcome\n"
print(s.strip())
Antworten
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\t\tWelcome\n
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Welcome\n
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\t\tWELCOME
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Welcome
Frage 9
Frage
What will be the output of the following code snippet?
class Person:
def __init__(self, id):
self.id = id
sam = Person(100)
sam.__dict__['age'] = 49
print (sam.age + len(sam.__dict__))
Antworten
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1
-
2
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49
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50
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51
Frage 10
Frage
Which of the following can be used to invoke the __init__ method in B from A, where A is a subclass of B?
Antworten
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super().__init__()
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super().__init__(self)
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B.__init__()
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B.__init__(self)
Frage 11
Frage
Which of the following statements are correct about the given code snippet?
class A:
def __init__(self, i = 0):
self.i = i
class B(A):
def __init__(self, j = 0):
self.j = j
def main():
b = B()
print(b.i)
print(b.j)
main()
Antworten
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Class B inherits A, but the data field “i” in A is not inherited.
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Class B inherits A, thus automatically inherits all data fields in A.
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When you create an object of B, you have to pass an argument such as B(5).
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The data field “j” cannot be accessed by object b.
Frage 12
Frage
Which of the following statements is true ?
Antworten
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By default, the __new__() method invokes the __init__ method.
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The __new__() method is defined in the object class.
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The __init__() method is defined in the object class.
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The __str__() method is defined in the object class.
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The __eq__(other) method is defined in the object class.
Frage 13
Frage
What will be the output of the following code snippet?
class A:
def __init__(self):
self.calcI(30)
print("i from A is", self.i)
def calcI(self, i):
self.i = 2 * i;
class B(A):
def __init__(self):
super().__init__()
def calcI(self, i):
self.i = 3 * i;
b = B()
Antworten
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The __init__ method of only class B gets invoked.
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The __init__ method of class A gets invoked and it displays “i from A is 0”.
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The __init__ method of class A gets invoked and it displays “i from A is 60”.
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The __init__ method of class A gets invoked and it displays “i from A is 90”.
Frage 14
Frage
What will be the output of the following code snippet?
class A:
def __init__(self):
self.calcI(30)
def calcI(self, i):
self.i = 2 * i;
class B(A):
def __init__(self):
super().__init__()
print("i from B is", self.i)
def calcI(self, i):
self.i = 3 * i;
b = B()
Antworten
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The __init__ method of only class B gets invoked.
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The __init__ method of class A gets invoked and it displays “i from B is 0”.
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The __init__ method of class A gets invoked and it displays “i from B is 60”.
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The __init__ method of class A gets invoked and it displays “i from B is 90”.
Frage 15
Frage
Which of the following statements can be used to check, whether an object “obj” is an instance of class A or not?
Antworten
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obj.isinstance(A)
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A.isinstance(obj)
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isinstance(obj, A)
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isinstance(A, obj)
Frage 16
Frage
What relationship correctly fits for University and Professor?
Antworten
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association
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composition
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inheritance
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All of the above
Frage 17
Frage
What relationship is suited for Course and Faculty?
Antworten
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association
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composition
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inheritance
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None of the above
Frage 18
Frage
What relationship is best suited for Employee and Person?
Antworten
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association
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composition
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inheritance
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None of the above
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