PCEP-30-02 1.1 Understand Fundamental Terms and Definitions PCEP-30 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What does the semantics of a programming language describe?

   • AThe rules for forming valid statements.
   • BThe process of translating source code to bytecode.
   • CThe meaning or effect of syntactically correct code when executed.
   • DThe basic vocabulary elements of the language.
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2. 17application · medium

   A developer is using an interactive Python shell (REPL) to test a small snippet. They type a line and press Enter, and the result appears immediately. What does this behavior illustrate about the Python interpreter?

   • AThe interpreter translates the line to machine code and runs it directly on the CPU.
   • BThe interpreter stores all lines in memory and only executes them when the session ends.
   • CThe interpreter compiles the entire session to bytecode before executing any line.
   • DThe interpreter reads, compiles, and executes each line individually, providing immediate feedback.
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4. 18application · medium

   A developer writes the following code and expects it to print 'Hello': ```python print('Hello') ``` But the interpreter raises a SyntaxError. What is the most likely cause?

   • AThe code uses a single quote instead of a double quote for the string literal.
   • BThe code is missing a semicolon at the end of the statement.
   • CThe `print` function is not a keyword, so it cannot be used without importing it first.
   • DThe code is syntactically correct, so a SyntaxError would not occur; the error must be something else like a missing parenthesis.
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5. 19expert · hard

   A team is porting a Python application to a new embedded platform that has limited memory. They are concerned about the overhead of the Python interpreter. Which approach would best address their concern while keeping the application in Python?

   • ARewrite the application in a compiled language like C, as Python cannot run on embedded platforms.
   • BCompile the Python source to a standalone machine-code executable using a tool like Cython or Nuitka.
   • CUse the standard CPython interpreter but disable bytecode caching to save disk space.
   • DUse a pure interpreter approach and avoid any compilation, as that reduces memory usage.
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6. 20foundation · easy

   What does the syntax of a programming language define?

   • AThe meaning of each statement and expression.
   • BThe process of executing code line by line.
   • CThe basic vocabulary elements like keywords and operators.
   • DThe set of rules that govern the structure of valid statements and expressions.
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