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Welcome to the Compilers MCQs Page

Dive deep into the fascinating world of Compilers with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Compilers, a crucial aspect of Systems Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Compilers, 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 Compilers. 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 Compilers. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Compilers MCQs | Page 3 of 9

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Q21.
The ultimate goal of a compiler is to,

a.

Reduce the clock cycles for a programming task.

b.

Reduce the size of the object code.

c.

Be versatile.

d.

Be able to detect even the smallest of errors.

Discuss
Answer: (a).Reduce the clock cycles for a programming task.
Q22.
Which method is used for resolving data dependency conflict by the compiler itself?

a.

Delayed load

b.

operand forwarding

c.

Pre fetch target instruction

d.

loop buffer

Discuss
Answer: (a).Delayed load
Q23.
Inherited attribute is a natural choice in

a.

Keeping track of variable declaration

b.

Checking for the correct use of L values and R values

c.

Both a and b

d.

None of these

Discuss
Answer: (a).Keeping track of variable declaration
Q24.
A grammar that produces more than one parse tree for some sentence is called

a.

Ambiguous

b.

Unambiguous

c.

Regular

d.

None of these

Discuss
Answer: (a).Ambiguous
Q25.
Pee hole optimization

a.

Loop optimization

b.

Local optimization

c.

Constant folding

d.

Data flow analysis

Discuss
Answer: (c).Constant folding
Q26.
The optimization which avoids test at every iteration is

a.

Loop unrolling

b.

Loop jamming

c.

Constant folding

d.

None of these

Discuss
Answer: (a).Loop unrolling
Q27.
Advantage of panic mode of error recovery is that

a.

It is simple ti implement

b.

It never gets into an infinite loop

c.

Both a and b

d.

None of these

Discuss
Answer: (d).None of these
Q28.
Which of the following is used for grouping of characters into tokens (in a computer)

a.

A parser

b.

Code optimizer

c.

Code generator

d.

Scanner

Discuss
Answer: (d).Scanner
Q29.
A compiler for a high-level language that runs on one machine and produces code for a different machine is called

a.

Optimizing compiler

b.

One pass compiler

c.

Cross compiler

d.

Multipass compiler

Discuss
Answer: (c).Cross compiler
Q30.
Cross-compiler is a compiler

a.

Which is written in a different language from the source language

b.

That generates object code for the machine it’s running on

c.

Which is written in the same language as the source language

d.

That runs on one machine but produces object code for another machine

Discuss
Answer: (d).That runs on one machine but produces object code for another machine
Page 3 of 9

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