> > Analysis MCQs > Memory management Analysis MCQs

Memory management Analysis MCQ

Dynamic memory allocation occurs ________.

Assigns an address to the variable named ptr

A memory address

When a new variable is created at runtime

Created with the new operator

Answer

Correct Answer: When a new variable is created at runtime

Note: This Question is unanswered, help us to find answer for this one

What is one of the advantages of Paging?

It does not suffer from external fragmentation.

Paper cuts.

It does not suffer from internal fragmentation.

Answer

Correct Answer: It does not suffer from external fragmentation.

Note: This Question is unanswered, help us to find answer for this one

In CPP, dynamic memory allocation is done using ______________ operator.

Calloc()

Malloc()

New

Allocate

Answer

Correct Answer: New

Note: This Question is unanswered, help us to find answer for this one

Which of the following is not a false statement about new operator?

All

It returns garbage value when memory allocation fails

It can’t be overloaded

It automatically computes the size of the data object

Answer

Correct Answer: It automatically computes the size of the data object

Note: This Question is unanswered, help us to find answer for this one

What is the Process Input Queue?

A collection of processes on the disk that are waiting to be brought into memory for execution.

A collection of processes.

A collection of processes on the disk that have already executed.

Answer

Correct Answer: A collection of processes on the disk that are waiting to be brought into memory for execution.

Note: This Question is unanswered, help us to find answer for this one

Can we allocate memory for the objects dynamically in CPP?

Yes

Answer

Correct Answer: Yes

Note: This Question is unanswered, help us to find answer for this one

Which of the following is/are valid ways to allocate memory for an integer by dynamic memory allocation in CPP?

int *p = new int(100);

Int *p; p = new int; *p = 100;

Only 1,2

Int *p = NULL; p = new int; *p=100;

All

Answer

Correct Answer: All

Note: This Question is unanswered, help us to find answer for this one

What is Swapping?

The process of moving a process within memory to backing store.

The process of moving a process to memory.

The process of moving a process within memory to and from the backing store.

Answer

Correct Answer: The process of moving a process within memory to and from the backing store.

Note: This Question is unanswered, help us to find answer for this one

During dynamic memory allocation in CPP, new operator returns__________ value if memory allocation is unsuccessful.

Zero

False

None

NULL

Answer

Correct Answer: NULL

Note: This Question is unanswered, help us to find answer for this one

Which of the following operators is used to release the dynamically allocated memory in CPP?

Free

Free And remove

Delete

Remove

Answer

Correct Answer: Delete

Note: This Question is unanswered, help us to find answer for this one

What does Contiguous Memory Allocation suffer from?

Only External or Internal memory fragmentation.

The Bird Flu.

External and/or Internal memory fragmentation.

Answer

Correct Answer: External and/or Internal memory fragmentation.

Note: This Question is unanswered, help us to find answer for this one