1.2.2b Translators, compilation stages, linkers and loaders Quiz: OCR Computer Science, Unit 2

The 20 questions

1. What type of translator converts high-level source code into machine code line by line at runtime?

   • Interpreter
   • Compiler
   • Linker
   • Assembler

2. Which stage of compilation removes comments and whitespace from source code?

   • Optimisation
   • Code generation
   • Syntax analysis
   • Lexical analysis

3. What replaces keywords, constants, and identifiers during the lexical analysis stage?

   • Tokens
   • Symbol tables
   • Op-codes
   • Parse trees

4. Which compilation stage checks that code follows the grammatical rules of the programming language?

   • Syntax analysis
   • Code generation
   • Optimisation
   • Lexical analysis

5. What is the main purpose of the code optimisation stage during compilation?

   • Remove source comments
   • Improve execution efficiency
   • Generate initial tokens
   • Check syntax rules

6. Which tool combines multiple compiled object code files into a single executable file?

   • Assembler
   • Linker
   • Interpreter
   • Loader

7. What is the primary role of an operating system loader?

   • Compile high-level code
   • Translate source code
   • Load executables into RAM
   • Link external libraries

8. Which type of linker embeds library code directly into the executable file at compile time?

   • Dynamic linker
   • Lexical analyser
   • Static linker
   • Runtime loader

9. Where are identifier names, data types, and scope information stored during compilation?

   • Symbol table
   • Call stack
   • System registry
   • Parse tree

10. Which translator converts low-level assembly language directly into executable machine code?

    • Interpreter
    • Compiler
    • Transpiler
    • Assembler

11. What intermediate code is generated by compiling Java source code before execution on a virtual machine?

    • Assembly code
    • Bytecode
    • Machine code
    • Source code

12. An error message stating 'Mismatched brackets' is produced during which compilation stage?

    • Lexical analysis
    • Syntax analysis
    • Optimisation
    • Code generation

13. Where is a new variable identifier stored during lexical analysis?

    • Symbol table
    • Control stack
    • Data dictionary
    • Heap memory

14. Which compilation output contains machine instructions but still requires memory address resolution?

    • Source code
    • Bytecode file
    • Object code
    • Executable file

15. Which system utility converts relative memory addresses in an executable into absolute RAM addresses?

    • Loader
    • Assembler
    • Linker
    • Compiler

16. Which stage of compilation checks for semantic errors, such as type mismatch in variable assignments?

    • Code generation
    • Semantic analysis
    • Lexical analysis
    • Syntax analysis

17. What is a major advantage of using an interpreter instead of a compiler during software development?

    • Source code protection
    • Easier error debugging
    • Optimised machine code
    • Faster execution speed

18. Which compiler generates executable code intended to run on a different operating system or architecture?

    • Just-in-time compiler
    • Cross compiler
    • Bytecode compiler
    • Decompiler

19. Which stage of compilation translates the checked syntax tree into machine code or assembly language instructions?

    • Code optimisation
    • Semantic analysis
    • Code generation
    • Lexical analysis

20. What is a main advantage of using intermediate code like Java bytecode?

    • Direct hardware control
    • Faster compilation
    • No virtual machine
    • Platform independence

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