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Welcome to the Memory Allocation and Variable Scope MCQs Page

Dive deep into the fascinating world of Memory Allocation and Variable Scope with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Memory Allocation and Variable Scope, a crucial aspect of Object Oriented Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Memory Allocation and Variable Scope, 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 Object Oriented Programming.

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Check out the MCQs below to embark on an enriching journey through Memory Allocation and Variable Scope. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming.

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

Memory Allocation and Variable Scope MCQs | Page 5 of 6

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Q41.
Does java contain auto or register keywords?

a.

Yes, for declaring every type of variable

b.

Yes, only to declare cache registers

c.

No, because java doesn’t support automatic variables

d.

No, java supports local variable concept

Discuss
Answer: (d).No, java supports local variable concept
Q42.
The automatic variables _________________________

a.

Must be declared after its use

b.

Must be declared before using

c.

Must be declared, can be anytime

d.

Must not be initialized

Discuss
Answer: (b).Must be declared before using
Q43.
Which error is produced if the automatic variables are used without declaration?

a.

Undefined symbol

b.

Memory error

c.

Type mismatch

d.

Statement missing

Discuss
Answer: (a).Undefined symbol
Q44.
In perl, using which operator are the local variables created?

a.

Dot

b.

Arrow

c.

Scope resolution

d.

my

Discuss
Answer: (d).my
Q45.
How are automatic variables different from the instance variables?

a.

Automatic variables are initialized automatically but instances are not

b.

Automatic variables are given zero values initially and not instances

c.

Instance variables have to be initialized explicitly and automatic implicitly

d.

Instance variables are initialized implicitly while automatic are not

Discuss
Answer: (d).Instance variables are initialized implicitly while automatic are not
Q46.
What is extern variable?

a.

Variables to be used that are declared in another object file

b.

Variables to be used that are declared in another source file

c.

Variables to be used that are declared in another executable file

d.

Variables to be used that are declared in another program

Discuss
Answer: (b).Variables to be used that are declared in another source file
Q47.
Which among the following is a correct statement for variables?

a.

Variable can be declared many times

b.

Variable can be declared only one time

c.

Variable declaration can’t be done more than ones

d.

Variable declaration is always done more than one time

Discuss
Answer: (a).Variable can be declared many times
Q48.
Which among the following is true for the variables?

a.

Variable can be defined only once

b.

Variable can be defined any number of times

c.

Variable must be defined more than one time

d.

Variable can be defined in different files

Discuss
Answer: (a).Variable can be defined only once
Q49.
To use extern variable _____________________

a.

The source file must not be included in the new file code

b.

The source file itself must be used for new program

c.

The source file must be included in the new file

d.

The source file doesn’t matter for extern variables

Discuss
Answer: (c).The source file must be included in the new file
Q50.
What does a header file contain for an extern variable?

a.

Only declaration of variables

b.

Only definition of variables

c.

Both declaration and definition of variables

d.

Neither declaration nor definition

Discuss
Answer: (a).Only declaration of variables
Page 5 of 6

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