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| Question | Answer |
| What is the first stage in a compiler? | Lexical analysis. |
| What is the input to the lexical analyser? | The source code. |
| What is the output from the lexical analyser? | A token stream. |
| What is the second stage in the compiler? | Syntax analysis. |
| What is the final stage of compilation? | Code generation and optimisation. |
| What is remove during lexical analysis? | Whitespace and code comments. |
| Where are identifiers placed? | In the symbol table. |
| What are tokens? | Tokens are a symbolic representation of the input characters. |
| What is the group of characters called which represent a token? | The lexeme. |
| Which is the slowest stage of compilation and why? | Lexical analysis, because it deals with the code in its most abstract form. |
| What is the purpose of the syntax analysis stage? | To check that the source code is syntactically correct based on the rules of the language (often defined by BNF or syntax diagrams). |
| Which stage is the machine code generated? | Code generation and optimisation. |
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