Compiler Design MCQ Questions and Answers for Practice

1. How many parts of compiler are there?

1. 1
2. 2
3. 4
4. 8

2. What is the output of lexical analyzer?

1. A parse tree
2. A list of tokens
3. Intermediate code
4. Machine code

3. Three address code invloves

1. exactly 3 address
2. at the most 3 address
3. no unary operators
4. none of these

4. When a computer is first turned on or resrarted, a special type of absolute loader is executed called

1. Compile and GO loader
2. Boot loader
3. Boot strap loader
4. Relating loader

5. When is the type checking usually done?

1. During syntax directed translation
2. During lexical analysis
3. During code optimization
4. During syntax analysis

6. In a compiler, when is the keyboards of a language are recognized?

1. During the lexical analysis of a program
2. During parsing of the program
3. During the code generation
4. During the data flow analysis

7. Scissoring enables

1. a part of data to be displayed
2. entire data to be displayed
3. full data display on full area of screen
4. no data to be displayed

8. The graph that shows basic blocks and their successor relationship is called

1. DAG
2. Flow graph
3. control graph
4. Hamiltonion graph

9. Which of the following groups is/are token together into semantic structures?

1. Syntax analyzer
2. Intermediate code generation
3. Lexical analyzer
4. Semantic analyzer

10. Relocation bits used by relocating loader are specified by

1. relocating loader itself
2. linker
3. assembler
4. macro processor

11. The identification of common sub-expression and replacement of run-time computations by compile-time computations is

1. local optimization
2. loop optimization
3. constant folding
4. data flow analysis

12. What information need to be included in an object module, if a linker is given object modules for a set of programs that were compiled separately?

1. Names and locations of all external symbols defined in the object module
2. Object code
3. Absolute addresses of internal symbols
4. Relocation bits

13. Compiler should report the presence of ......... in the source program, in translation process

1. Classes
2. Objects
3. Errors
4. Text

14. Lexical analysis is about breaking a sequence of characters into

1. Groups
2. Packets
3. Lines
4. Tokens

15. In a compiler, the data structure responsible for the management of information about variables and their attributes is

1. Semantic stack
2. Parser table
3. Symbol table
4. Abstract syntax-tree