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Welcome to the Phases of Compiler MCQs Page

Dive deep into the fascinating world of Phases of Compiler with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Phases of Compiler, a crucial aspect of Systems Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Phases of Compiler, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Systems Programming.

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Check out the MCQs below to embark on an enriching journey through Phases of Compiler. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Systems Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Phases of Compiler. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Phases of Compiler MCQs | Page 10 of 11

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Q91.
Reduction in strength means

a.

replacing a costly operation by a relatively cheaper one

b.

replacing run-time computation by compile time computation

c.

Both (a) & (b)

d.

removing loop invariant computation

Discuss
Answer: (c).Both (a) & (b)
Q92.
Substitution of values for names whose values are constant, is done in

a.

constant folding

b.

loop optimization

c.

local optimization

d.

none of these

Discuss
Answer: (a).constant folding
Q93.
Function of the syntax phase is to

a.

build a uniform symbol table.

b.

build a literal table and an identifier table.

c.

parse the source program into the basic elements or tokens of the language.

d.

recognize the major constructs of the language and to cal the appropriate action routines that wil generate the intermediate form or matrix for these constructs

Discuss
Answer: (d).recognize the major constructs of the language and to cal the appropriate action routines that wil generate the intermediate form or matrix for these constructs
Q94.
Which of the following features cannot be captured by CFG ?

a.

matching nested paranthesis

b.

syntax of recursive procedures

c.

syntax of if-then-else statements

d.

whether a variable is declared before its use

Discuss
Answer: (a).matching nested paranthesis
Q95.
Which of the following statement is true ?

a.

SLR parser is more powerful than LALR

b.

Canonical LR parser is nore powerful than LALR parser

c.

LALR parser is more powerful than Canonical LR parser

d.

the parsers SLR, Canonical LR, and LALR  have the same power

Discuss
Answer: (b).Canonical LR parser is nore powerful than LALR parser
Q96.
Which is not true about syntax and semantic parts of a computer language?

a.

Semantics is the responsibility of the programmer.

b.

Semantics is checked mechanically by a computer.

c.

Both (a) and (b)

d.

Syntax is generally checked by the programmer.

Discuss
Answer: (c).Both (a) and (b)
Q97.
The table created by lexical analysis to describe all literals used in the source program is

a.

Reductions

b.

Literal table

c.

Identiier table

d.

Terminal table

Discuss
Answer: (b).Literal table
Q98.
The task(s) of the Lexial analysis phase is/are:

a.

to build a uniform symbol table

b.

to build a literal table and an identifier table

c.

to parse the source program into the basic elements or tokens of the language

d.

All of the above

Discuss
Answer: (d).All of the above
Q99.
The table created by lexical analysis to describe all literals used in the source program, is:

a.

Reductions

b.

Literal table

c.

Identifier table

d.

Terminal table

Discuss
Answer: (b).Literal table
Q100.
The function(s) of the Syntax phase is/ are:

a.

to build a uniform symbol table

b.

to build a literal table and an identifier table

c.

to parse the source program into the basic elements or tokens of the language

d.

to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs

Discuss
Answer: (d).to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs
Page 10 of 11

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