Python Syntax and Concepts JN0-224 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is the purpose of the __name__ == '__main__' idiom in a Python script?

   • ATo import the main module
   • BTo check if the script is being run directly or imported as a module
   • CTo declare global variables
   • DTo define the main function of the script
   Reveal Solution Discussion Select an answer first
2. 17application · easy

   A network engineer is writing a Python script that uses PyEZ to collect interface statistics from a device and writes the output to a log file. The script must append the output to the existing log file without overwriting previous entries. Which file mode should be used when opening the file?

   • A'x'
   • B'a'
   • C'r+'
   • D'w'
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   What is the output of the following code? def add(a, b): return a + b result = add(3, 4) print(result)

   • A7
   • B34
   • CNone
   • DError
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5. 19foundation · easy

   Which mode string is used to open a file for writing in Python?

   • A'w'
   • B'r'
   • C'a'
   • D'x'
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   In PyEZ, what is the role of a Table?

   • ATo define how to parse and structure operational command output
   • BTo define the structure of a database
   • CTo manage device connections
   • DTo store configuration data
   Reveal Solution Discussion Select an answer first