Compilation Process Questions and Answers
1. What process in compilation translates the source code into machine code?
Answer: c. Code generation
Explanation: This phase translates the intermediate representation of the code into machine
code.
2. What is the first step in the compilation process?
Answer: Lexical Analysis
Explanation: This phase breaks the source code into tokens.
3. What does the compiler generate after lexical analysis?
Answer: Tokens
Explanation: The lexer produces tokens from the source code for further analysis.
4. Error handling is the task of the final code generation stage.
Answer: False
Explanation: Error handling occurs at multiple stages of compilation, not just the final code
generation.
5. The Symbol Table holds all identifiers and their attributes.
Answer: True
Explanation: The symbol table stores information about identifiers, including types and
scopes.
6. What is the main function of the lexer in the compilation process?
Answer: Convert the source code into a series of tokens.
Explanation: The lexer tokenizes the source code for further processing.
7. During the compilation process, what is the purpose of the parser?
Answer: Analyzing the tokenized source code to check its syntactic structure and build a
parse tree.
Explanation: The parser checks syntax and constructs a hierarchical representation of the
code.
8. What is the process in compilation that converts high-level programming language into low-
level language?
Answer: d. Translation
Explanation: Translation refers to converting high-level code into machine or assembly
language.
9. Type checking strategy is the role of the code optimization phase.
Answer: False
Explanation: Type checking is part of semantic analysis, not the code optimization phase.
10. There is only one output in lexical analysis.
Answer: False
Explanation: The lexer produces tokens and may also generate error messages and track
positions.
11. Semantic analysis can be combined with syntactic analysis.
Answer: True
Explanation: Many compilers perform semantic checks alongside syntax analysis for
efficiency.
12. Intermediate code generation connects:
Answer: c. Semantic Analysis to Code optimization
Explanation: Intermediate code serves as a bridge between these two phases.
13. Which stage of compilation checks the source code with the help of grammar?
Answer: a. Syntax checking
Explanation: Syntax checking verifies the grammatical structure of the code.
14. Three Address Code is an intermediate representation.
Answer: True
Explanation: TAC is a form of intermediate representation used in compilers.
15. During the compilation process, the binary code is immediately generated in memory.
Answer: False
Explanation: Binary code is typically written to a file and loaded into memory when executed.
16. What is the output of semantic analysis in the compilation process?
Answer: d. Symbol table
Explanation: The symbol table stores information about identifiers for semantic verification.
17. Code generation is based on register allocation.
Answer: True
Explanation: Efficient register allocation is crucial for optimizing the generated code.
18. Abstract Parse Tree is the result of syntax checking.
Answer: False
Explanation: Syntax checking produces an Abstract Syntax Tree (AST), not an Abstract Parse
Tree.
