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Compiler Design MCQs and Answers With Explanation – For those seeking to learn about Compiler Design, this article on MCQs on Compiler Design provides essential knowledge. We assure aspiring candidates who are appearing for interviews or placement tests related to compiler design that this article, “Compiler Design MCQ Quiz,” can be helpful. Before exploring the Top 50 Compiler Design MCQs, it’s essential to understand what compiler design is. Compiler design is a fundamental subject in computer science that plays a crucial role in programming language development. A compiler is a software program that converts high-level programming language source code into an executable machine code format. This conversion process includes several phases, such as lexical analysis, syntax analysis, code optimization, and code generation.
Compiler Design MCQ With Answers
With the help of this Compiler Design MCQ Quiz, we will test your understanding of various aspects of compiler design, including the different phases of compilation, types of parsers, code optimization techniques, and common errors encountered during the compilation process.
Compiler Design Multiple Choice Questions
| Name | Compiler Design |
| Exam Type | MCQ (Multiple Choice Questions) |
| Category | Technical Quiz |
| Mode of Quiz | Online |
Top 50 Compiler Design MCQs | Practice Online Quiz
1. Which of the following is not a phase in the compilation process?
a) Lexical Analysis
b) Syntax Analysis
c) Code Optimization
d) Program Execution
Answer: d) Program Execution
Explanation: Program Execution is not a part of the compilation process, it comes after the compilation process is complete.
2. The main function of a lexer is to:
a) Convert high-level code into low-level code
b) Convert source code into tokens
c) Generate optimized code
d) Transform code into a parse tree
Answer: b) Convert source code into tokens
Explanation: A lexer scans the source code and breaks it down into tokens, which are the basic building blocks of the language.
3. Which of the following is not a type of parser?
a) Top-down parser
b) Bottom-up parser
c) Recursive descent parser
d) Intermediate parser
Answer: d) Intermediate parser
Explanation: There is no such thing as an “intermediate parser”. Top-down, bottom-up, and recursive descent parsers are all common types of parsers.
4. Which of the following is not a common intermediate representation used by compilers?
a) Abstract Syntax Tree (AST)
b) Three-address code
c) Quadruple
d) Double-ended queue
Answer: d) Double-ended queue
Explanation: A double-ended queue is not an intermediate representation used by compilers. The other three options are all commonly used representations.
5. Which of the following is not a type of code optimization?
a) Constant folding
b) Loop unrolling
c) Dead code elimination
d) Type inference
Answer: d) Type inference
Explanation: Type inference is not an optimization technique, it is a feature of some programming languages that allows the compiler to infer the type of a variable based on its usage.
6. The process of transforming code from one programming language to another is called:
a) Parsing
b) Translation
c) Interpretation
d) Compilation
Answer: b) Translation
Explanation: Translation is the process of transforming code from one programming language to another. Compilation is a specific type of translation that produces executable code.
7. Which of the following is not a type of code generation technique?
a) Direct execution
b) Indirect execution
c) Binary translation
d) Just-in-time compilation
Answer: b) Indirect execution
Explanation: There is no such thing as “indirect execution”. The other three options are all common code generation techniques.
8. Which of the following is not a property of a good compiler?
a) Efficiency
b) Correctness
c) Portability
d) Interactivity
Answer: d) Interactivity
Explanation: Interactivity is not a property of a good compiler. Efficiency, correctness, and portability are all important properties.
9. Which of the following is not a step in the lexical analysis phase?
a) Removing comments and whitespace
b) Breaking down code into tokens
c) Identifying keywords and identifiers
d) Checking for syntax errors
Answer: d) Checking for syntax errors
Explanation: Checking for syntax errors is not a step in the lexical analysis phase, it is part of the syntax analysis phase.
10. Which of the following is not a common type of error detected during lexical analysis?
a) Missing semicolon
b) Undefined variable
c) Illegal character
d) Unexpected end of file
Answer: b) Undefined variable
Explanation: Undefined variable errors are typically detected during semantic analysis, not lexical analysis.
11. Which of the following is not a common type of error detected during syntax analysis?
a) Missing semicolon
b) Undefined variable
c) Unexpected token
d) Mismatched parentheses
Answer: b) Undefined variable
Explanation: The process of analyzing a program to determine the meaning of its statements is called:
12. Which of the following is not a common type of error detected during semantic analysis?
a) Type mismatch
b) Undeclared variable
c) Division by zero
d) Syntax error
Answer: d) Syntax error
Explanation: Syntax errors are typically detected during syntax analysis, not semantic analysis.
13. The process of transforming source code into executable code is called:
a) Interpretation
b) Translation
c) Compilation
d) Execution
Answer: c) Compilation
Explanation: Compilation is the process of transforming source code into executable code. Interpretation is a different process where code is executed directly without being compiled.
14. Which of the following is not a common optimization technique used by compilers?
a) Loop fusion
b) Dead code elimination
c) Register allocation
d) Runtime profiling
Answer: d) Runtime profiling
Explanation: Runtime profiling is not an optimization technique used by compilers, it is a technique for analyzing the performance of a program while it is running.
15. The process of transforming code into an intermediate representation is called:
a) Parsing
b) Translation
c) Code generation
d) Optimization
Answer: a) Parsing
Explanation: Parsing is the process of transforming code into an intermediate representation, typically a parse tree or an abstract syntax tree.
16. Which of the following is not a common type of parser?
a) LR parser
b) Recursive descent parser
c) Packrat parser
d) Greedy parser
Answer: d) Greedy parser
Explanation: There is no such thing as a “greedy parser”. LR, recursive descent, and packrat parsers are all common types of parsers.
17. Which of the following is not a step in the code optimization phase?
a) Loop unrolling
b) Constant folding
c) Register allocation
d) Code generation
Answer: d) Code generation
Explanation: Code generation is not a step in the code optimization phase, it is the final phase of the compilation process.
18. Which of the following is not a common type of optimization performed by compilers?
a) Constant propagation
b) Common subexpression elimination
c) Method overloading
d) Loop optimization
Answer: c) Method overloading
Explanation: Method overloading is not an optimization performed by compilers, it is a feature of many programming languages that allows multiple functions with the same name to be defined.
19. Which of the following is not a common type of loop optimization?
a) Loop unrolling
b) Loop fusion
c) Loop interchange
d) Loop Expansion
Answer: d) Loop Expansion
Explanation: Loop expansion is not a common type of loop optimization, it involves replacing a loop with multiple copies of its body.
20. Which of the following is not a common type of data flow analysis performed by compilers?
a) Live variable analysis
b) Available expressions analysis
c) Constant propagation
d) Type checking
Answer: d) Type checking
Explanation: Type checking is not a data flow analysis, it is a type of semantic analysis.
21. Which of the following is not a common type of register allocation algorithm?
a) Graph coloring
b) Linear scan
c) Spilling
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a register allocation algorithm, it is a loop optimization technique.
22. Which of the following is not a common type of control flow optimization?
a) Dead code elimination
b) Jump threading
c) Loop fusion
d) Strength reduction
Answer: c) Loop fusion
Explanation: Loop fusion is not a control flow optimization, it is a loop optimization technique.
23. Which of the following is not a common type of instruction scheduling algorithm?
a) List scheduling
b) Static scheduling
c) Dynamic scheduling
d) Hybrid scheduling
Answer: d) Hybrid scheduling
Explanation: There is no such thing as a “hybrid scheduling” algorithm for instruction scheduling.
24. Which of the following is not a common type of peephole optimization?
a) Constant folding
b) Dead code elimination
c) Common subexpression elimination
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a peephole optimization, it is a loop optimization technique.
25. Which of the following is not a common type of code size optimization?
a) Function inlining
b) Dead code elimination
c) Loop unrolling
d) Instruction scheduling
Answer: d) Instruction scheduling
Explanation: Instruction scheduling is not a code size optimization, it is a performance optimization.
26. Which of the following is not a common type of code generation technique for object-oriented languages?
a) Virtual method table
b) Interface table
c) Method dispatch table
d) Type table
Answer: d) Type table
Explanation: There is no such thing as a “type table” in the context of code generation for object-oriented languages.
27. Which of the following is not a common type of garbage collection algorithm?
a) Mark and sweep
b) Reference counting
c) Copying
d) Bubble sort
Answer: d) Bubble sort
Explanation: Bubble sort is not a garbage collection algorithm, it is a sorting algorithm.
28. Which of the following is not a common type of lexical analysis tool?
a) Lex
b) Flex
c) Bison
d) Yacc
Answer: c) Bison
Explanation: Bison is not a lexical analysis tool, it is a parser generator.
29. Which of the following is not a common type of syntax analysis tool?
a) Bison
b) Yacc
c) LL parser
d) LR parser
Answer: c) LL parser
Explanation: LL parser is a type of syntax analysis tool, but it is not a separate tool like Bison or Yacc.
30. Which of the following is not a common type of intermediate representation used by compilers for functional programming languages?
a) Lambda calculus
b) Continuation passing style
c) Static single assignment
d) Three-address code
Answer: d) Three-address code
Explanation: Three-address code is not commonly used as an intermediate representation for functional programming languages, it is more commonly used for imperative languages.
31. Which of the following is not a common type of loop transformation?
a) Loop unrolling
b) Loop fusion
c) Loop interchange
d) Loop differentiation
Answer: d) Loop differentiation
Explanation: Loop differentiation is not a common type of loop transformation, it is not a well-known technique in the field of compilers.
32. Which of the following is not a common type of optimization for distributed computing?
a) Load balancing
b) Data partitioning
c) Code mobility
d) Program tracing
Answer: d) Program tracing
Explanation: Program tracing is not a common type of optimization for distributed computing, it is more commonly used for debugging.
33. Which of the following is not a common type of optimization for parallel computing?
a) Loop parallelization
b) Task parallelization
c) Memory hierarchy optimization
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a common type of optimization for parallel computing, it is more commonly used for single-threaded performance optimization.
34. Which of the following is not a common type of parallel programming model?
a) Message passing
b) Shared memory
c) Data parallelism
d) Object-oriented programming
Answer: d) Object-oriented programming
Explanation: Object-oriented programming is not a parallel programming model, it is a programming paradigm.
35. Which of the following is not a common type of parallel architecture?
a) SIMD
b) MIMD
c) Shared memory
d) Object-oriented architecture
Answer: d) Object-oriented architecture
Explanation: Object-oriented architecture is not a common type of parallel architecture, it is not a well-defined concept in the field of computer architecture.
36. Which of the following is not a common type of parallel algorithm?
a) Map
b) Reduce
c) Merge
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a parallel algorithm, it is a loop optimization technique.
37. Which of the following is not a common type of processor architecture?
a) Von Neumann
b) Harvard
c) RISC
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a processor architecture, it is a loop optimization technique.
38. Which of the following is not a common type of instruction format used by processors?
a) CISC
b) RISC
c) VLIW
d) Object-oriented
Answer: d) Object-oriented
Explanation: Object-oriented is not a type of instruction format used by processors, it is a programming paradigm.
39. Which of the following is not a common type of processor instruction?
a) Load
b) Store
c) Jump
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a processor instruction, it is a loop optimization technique.
40. Which of the following is not a common type of branch prediction algorithm?
a) Static
b) Dynamic
c) Gshare
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a branch prediction algorithm, it is a loop optimization technique.
41. Which of the following is not a common type of cache replacement algorithm?
a) LRU
b) FIFO
c) Random
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a cache replacement algorithm, it is a loop optimization technique.
42. Which of the following is not a common type of virtual memory replacement algorithm?
a) LRU
b) FIFO
c) Optimal
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a virtual memory replacement algorithm, it is a loop optimization technique.
43. Which of the following is not a common type of software testing?
a) Unit testing
b) Integration testing
c) Regression testing
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a software testing technique, it is a loop optimization technique.
44. Which of the following is not a common type of software maintenance?
a) Corrective maintenance
b) Adaptive maintenance
c) Perfective maintenance
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a software maintenance technique, it is a loop optimization technique.
45. Which of the following is not a common type of software development process?
a) Waterfall
b) Agile
c) Spiral
d) Loop unrolling
Answer: d) Loop unrolling
Explanation: Loop unrolling is not a software development process, it is a loop optimization technique.
46. Which of the following is the first phase in the compilation process?
a) Parsing
b) Optimization
c) Code generation
d) Lexical analysis
Answer: d) Lexical analysis
Explanation: The first phase in the compilation process is lexical analysis, which involves converting the input source code into a sequence of tokens.
47. Which of the following is responsible for creating a symbol table during the compilation process?
a) Lexical analyzer
b) Parser
c) Semantic analyzer
d) Code generator
Answer: c) Semantic analyzer
Explanation: The semantic analyzer is responsible for creating a symbol table during the compilation process, which is used to keep track of the identifiers used in the program.
48. Which of the following is responsible for checking the type compatibility of expressions in a program during the compilation process?
a) Lexical analyzer
b) Parser
c) Semantic analyzer
d) Code generator
Answer: c) Semantic analyzer
Explanation: The semantic analyzer is responsible for checking the type compatibility of expressions in a program during the compilation process, which is necessary to ensure that the program behaves correctly.
49. Which of the following is responsible for generating machine code during the compilation process?
a) Lexical analyzer
b) Parser
c) Code generator
d) Semantic analyzer
Answer: c) Code generator
Explanation: The code generator is responsible for generating machine code during the compilation process, which can be executed on the target hardware.
50. Which of the following is responsible for optimizing the generated code during the compilation process?
a) Lexical analyzer
b) Parser
c) Code generator
d) Optimizer
Answer: d) Optimizer
Explanation: The optimizer is responsible for optimizing the generated code during the compilation process, which can improve the performance of the resulting program.
Compiler Design is a crucial aspect of programming that involves transforming source code into executable code through various phases. These phases include lexical analysis, syntax analysis, code optimization, and code generation, each of which plays a significant role in producing efficient and correct code. We hope this article on Compiler Design Multiple Choice Questions has helped you gain insight into Compiler Design concepts. Kindly continue to follow our website, Freshersnow, daily to stay updated on more technical quizzes