PCEP-30-02 4.2 Organize Interaction Between the Function and Its Environment PCEP-30 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What is the rule for combining positional and keyword arguments in a single function call?

   • AOnly one positional argument can be used with keywords.
   • BKeyword arguments must come before positional arguments.
   • CPositional arguments must come before keyword arguments.
   • DThey can be mixed in any order.
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2. 22foundation · easy

   What does it mean when a local variable shadows a global variable?

   • AThe local variable is used instead of the global one inside the function.
   • BThe global variable is deleted.
   • CThe function cannot access any global variables.
   • DThe global variable is copied to the local scope.
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4. 23foundation · easy

   For `def configure(host, port):`, which statement is true about keyword arguments?

   • AThey must be passed in the same order as the parameters.
   • BThey allow arguments to be passed in any order.
   • CThey can only be used with functions that have default values.
   • DThey must be enclosed in square brackets.
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5. 24foundation · easy

   In the function definition `def greet(name):`, what is `name` technically called?

   • AA parameter
   • BA local variable
   • CA return value
   • DAn argument
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6. 25expert · hard

   A developer has a global variable `total = 0` and a function that needs to add to it. The function also uses a local variable named `total` for a temporary calculation. Which approach correctly updates the global `total` while still using a local `total`?

   • AUse a different name for the local variable, e.g., `temp`, and use `global total` to update the global.
   • BUse `global total` only in the line that updates the global, and use `total` locally elsewhere.
   • CDo not use `global`; just assign to `total` inside the function.
   • DUse `global total` at the top of the function, then assign to `total` for both the local calculation and the global update.
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