What is the best answer for this quiz. Q.1 If you said \"&aVariable\" in C++, ho
ID: 3906599 • Letter: W
Question
What is the best answer for this quiz.
Q.1
If you said "&aVariable" in C++, how would you say it in English?
"aVariable of the same type previously declared"
"thing pointed to by aVariable"
"pointer aVariable"
"address of aVariable"
Q.2
Which of the following statements about bags is ALWAYS true?
A bag is unordered, so it is not concerned with the ordering of the items it contains.
A bag prevents duplicate values from being inserted.
bag is implemented as an interface to a static data structure.
bag is implemented as an interface to a dynamic data structure.
Q.3
In general, what does the const keyword indicate?
Something that cannot be changed or cause change.
Something that is shared by all objects of a class.
Something whose size in memory is fixed.
Something that can be accessed directly through a class name.
Q.4
Which of the following is an advantage of using typedef?
It allows us to access the physical memory address of a variable.
It allows us to make a member variable visible to external client classes.
It allows us to define a type just once, which makes it easier to change datatypes later if we need to.
It makes variables dynamic so they can expand if necessary.
Q. 5
If we declare double *total, which of the following statements is true?
We can get the value that total is pointing to by using &(*total).
We can get the value that total is pointing to by using *total.
We can get the value that total is pointing to by using &total.
We can get the value that total is pointing to by using total.
Q. 6
A destructor is:
a runtime exception which propagates from its source point through the call stack and terminates the program prematurely.
a fatal error that crashes a program in an unrecoverable way.
a special function whose job is to clean up any resources that an object has allocated before it is destroyed.
a keyword or operator that deletes an object from memory.
Q.7
The term "member variable" refers to:
an object that is constantly changing
functions that perform an object's operations
variables that store the attributes of an object
parameters declared in a member function header
Q. 8
How does a dynamic array work?
It allocates additional contiguous memory space adjacent to an existing array.
It creates a new array, copies the old array's contents into it, and then deletes the old array.
It hides a linked structure behind the scenes and has an interface that behaves like an array.
It allocates space for one additional element each time an overflow is detected.
Q.9
The process of using object-oriented concepts to make a plan for solving a problem is called ____.
Object Oriented Analysis (OOA)
Object Oriented Database Management System (OODBMS)
Object Oriented Programming (OOP)
Object Oriented Design (OOD)
Q.10
Which statement regarding C++ constructors is FALSE?
Constructors have the same name as their class.
Constructors are responsible for initializing an object's attributes.
Constructors are not declared with a return type.
Constructors must return the same data type that main() returns.
Q.11
Which of the following is a disadvantage of using typedef?
Without looking directly at the typedef statement, it is not obvious what type is actually being used.
It permanently locks the size of a data structure so it cannot be expanded.
It requires additional definitions and declarations in order to use it.
It produces variables and objects whose values are not easily modified.
Q.12
How does a sequence differ from a bag?
A sequence is dynamic and a bag is static.
A sequence allows duplicate values and a bag does not.
A sequence is ordered and a bag is unordered.
A sequence cannot be indexed like a bag can.
Q.13
If we had a class named MapData, how would we declare its destructor?
~MapData();
NULL_PTR this->MapData();
destructor* MapDataDestructor();
delete[] MapData();
Q.14
If we declare char c, how would we make a pointer point to it?
char *p = p->c;
char p = *c;
char *p = &c;
pointer p = pointerTo(c);
Q.15
The main idea behind object orientation is that ____.
we manage the development process as a series of iterations
we build software systems using only pre-existing components like libraries and frameworks
we view a problem as a set of objects that have attributes and behaviors
we build applications by first assembling user interface objects before writing code
Q.16
When used to declare a class member, what does static mean?
Its value cannot be changed.
It is shared by all objects of the class and can be accessed directly through the class name.
It cannot be overloaded.
Its size in memory is fixed.
Q 17
What is a memory leak?
When a local variable is declared but never used.
When memory is allocated but never released back to the system.
When an unnecesssary parameter is passed to a member function.
When an invalid array index references memory outside of the array's bounds.
Q18
The use of object-oriented concepts to help us understand a problem is called ____.
Object Oriented Analysis (OOA)
Object Oriented Database Management System (OODBMS)
Object Oriented Design (OOD)
Object Oriented Programming (OOP)
Q19
What are the main advantage and disadvantage of inline member functions?
They execute more efficiently but lead to larger memory consumption.
They have broader visibility to other objects but increase the risk of receiving invalid values.
They are easier to reuse but more difficult to write.
They compile faster but are difficult to debug.
Q. 20
In object-oriented terms, a container is:
a static data structure.
a mechanism for preventing the propagation of errors through a system.
an object that contains a collection of items.
an environment in which an application runs.
Thank you,
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