Online Access Free PCAP-31-03 Exam Questions

What is true about Object-Oriented Programming in Python? (Select two answers)

• A.the arrows on a class diagram are always directed from a superclass towards its subclass
• B.inheritance is the relation between a superclass and a subclass
• C.encapsulation allows you to protect some data from uncontrolled access
• D.an object is a recipe for a class

What is the expected output of the following code?

• A.an exception is raised
• B.2
• C.4
• D.3

What is the expected behavior of the following code?

• A.it outputs [2, 4]
• B.it outputs [0, 1, 2, 3, 4]
• C.the code is erroneus and it will not execute
• D.it outputs [4, 2]

Which of the following statements are true? (Select two answers)

• A.instd, outstd, errstd are the names of pre-opened streams
• B.if invoking open () fails, the value None is returned
• C.open () is a function which returns an int that represents a physical file handle
• D.the second open () argument is optional

What is the expected output of the following code?
def foo(x,y,z):
return x(y) - x(z)
print{f00(lambda x: x % 2, 2, 1) )

• A.0
• B.-1
• C.an exception is raised
• D.1