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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.

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Phases of Compiler MCQs | Page 9 of 11

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Q81.
Which of the following is a phase of a compilation process ?

a.

Lexical analysis

b.

Code generation

c.

Both (a) and (b)

d.

None of these

Discuss
Answer: (c).Both (a) and (b)
Q82.
Uniform symbol table

a.

contains all constants in the program

b.

a permanent table which lists all key words and special symbols of the language in symbolic form.

c.

is a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure.

d.

consists of full or partial list of the token's as they appear in the program created by Lexical analysis and used for syntax analysis and interpretation.

Discuss
Answer: (d).consists of full or partial list of the token's as they appear in the program created by Lexical analysis and used for syntax analysis and interpretation.
Q83.
In operator precedence parsing, precedence relations are defined

a.

to delimit the handle

b.

for all pair of terminals

c.

for all pair of non-terminals

d.

none of these

Discuss
Answer: (c).for all pair of non-terminals
Q84.
LR parsers are attractive because

a.

it does not back track

b.

it can be constructed to recognize CFG corresponding to almost all programming constructs

c.

both (a) and (b)

d.

none of these

Discuss
Answer: (c).both (a) and (b)
Q85.
The most powerful parser is

a.

SLR

b.

LALR

c.

Canonical LR

d.

Operator-precedence

Discuss
Answer: (c).Canonical LR
Q86.
Let ( Z,* ) be an algebraic structure, where Z is set of integers and the operation * is defined by n * m =maximum ( n , m ) Which of the following statements is true for ( Z, * ) ?

a.

( Z,* ) is a group

b.

( Z,* ) is a monoid

c.

( Z,* ) is an algebraic group

d.

none of these

Discuss
Answer: (d).none of these
Q87.
The identification of common sub-expression and replacement of run-time computations by compile-time computations is

a.

constant folding

b.

data flow analysis

c.

loop optimization

d.

local optimization

Discuss
Answer: (a).constant folding
Q88.
An intermediate code form is

a.

syntax trees

b.

postfix notation

c.

three address codes

d.

all of these

Discuss
Answer: (d).all of these
Q89.
The best way to compare the different implementations of symbol table is to compare the time required to

a.

make an inquiry

b.

add a new name

c.

add a new name and make an inquiry

d.

all of these

Discuss
Answer: (d).all of these
Q90.
To recover from an error, the operator precedence parser may

a.

delete symbols from the input

b.

delete symbols from the stack

c.

insert symbols onto the stack and onto the input

d.

all of these

Discuss
Answer: (d).all of these
Page 9 of 11

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