Python Institute PCAP-31-03 Online Practice Questions and Exam Preparation

Python Institute PCAP-31-03 Online Questions & Answers

• Question 21:

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

  A. closing an open file is performed by the closefile ( ) function
  B. the second open ( ) argument describes the open mode and defaults to `w'
  C. if open ( ) `s second argument is `r' the file must exist or open will fail
  D. if open ( )'s second argument is `w' and the invocation succeeds, the previous file's content is lost
  C. if open ( ) `s second argument is `r' the file must exist or open will fail
  D. if open ( )'s second argument is `w' and the invocation succeeds, the previous file's content is lost

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  Explanation

• Question 22:

  What is the expected behavior of the following code?

  

  A. it outputs 0
  B. it outputs 1
  C. it raises an exception
  D. it outputs 2
  B. it outputs 1

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  Explanation

• Question 23:

  The __bases__ property contains:

  A. base class location (addr)
  B. base class objects (class)
  C. base class names (str)
  D. base class ids (int)
  B. base class objects (class)

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  Explanation

• Question 24:

  A property that stores information about a given class's super-classes is named:

  A. __upper__
  B. __super__
  C. __ancestors__
  D. __bases__
  D. __bases__

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  Explanation

• Question 25:

  What is the expected output of the following code?

  

  A. 21
  B. 2
  C. 3
  D. 12
  A. 21

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  Explanation

• Question 26:

  You are going to read just one character from a stream called s. Which statement would you use?

  A. ch = read (s, 1)
  B. ch= s.input (1)
  C. ch= input (s, 1)
  D. ch= s.read (1)
  D. ch= s.read (1)

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  Explanation

  https://stackoverflow.com/questions/510357/python-read-a-single-character-from-the-user

• Question 27:

  What is the expected output of the following code?

  

  A. abcef
  B. The program will cause a runtime exception/error
  C. acdef
  D. abdef
  B. The program will cause a runtime exception/error

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  Explanation

  

• Question 28:

  What is the expected behavior of the following code?

  

  A. it outputs 2
  B. it raises an exception
  C. it outputs 1
  D. it outputs 0
  C. it outputs 1

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  Explanation

• Question 29:

  What is the expected behavior of the following code?

  

  A. it outputs 321
  B. it outputs 123
  C. it outputs 6
  D. it raises an exception
  C. it outputs 6

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  Explanation

• Question 30:

  Assuming that the math module has been successfully imported, which of the following expressions evaluate to True? (Select two answers)

  A. math.hypot(3, 4) == math.sqrt(25)
  B. math.hypot(2, 5) == math.trunc(2.5)
  C. math.hypot(2, 5) == math.trunc(2.5)
  D. math.ceil(2.5) == math.floor(2.5)
  A. math.hypot(3, 4) == math.sqrt(25)
  B. math.hypot(2, 5) == math.trunc(2.5)

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  Explanation