Question 11 When should a program explicitly use the this reference? A. Accessin

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Question 11

When should a program explicitly use the this reference?

A. Accessing a private variable
B. Accessing a public variable
C. Accessing a local variable
D. Accessing a field that is shadowed by a local variable

Question 12

Composition is sometimes referred to as a(n) __________ relationship.

A. is-a
B. has-a
C. have-a
D. one-to-many

Question 13

How many parameters does the default constructor that C# creates for you have?

A. 3
B. 1
C. 0
D. Varies

Question 14

A class’s __________ initializes members of that class.

A. constructor
B. utility method
C. access modifier
D. None of the above.

Question 15

In a method in which a parameter has the same name as an instance variable, using the this reference allows you to refer to:

A. the parameter.
B. the instance variable.
C. It varies depending on the situation.
D. None of the above

Question 16

Stacks are commonly referred to as __________ data structures.

A. first-in, last-out
B. first-in, first-out
C. last-in, first-out
D. None of the above

Question 17

Failure to release resources when the program is no longer using them can cause:

A. buffer overflows.
B. resource leaks.
C. exceptions.
D. None of the above

Question 18

Which of the following is FALSE?

A. A static method or property must be used to access private static instance variables.
B. A static method has no this reference.
C. A static method can be accessed even when no objects of its class have been instantiated.
D. A static method can call instance methods directly.

Question 19

Which of the following describes a static variable?

A. A variable with one copy shared by all class objects
B. A variable whose value may not be changed
C. All of the above
D. None of the above

Question 20

Abstract Data Types:

A. elevate the importance of data.
B. are approximations or models of real-world concepts and behaviors.
C. capture two notions—data representation and operations.
D. All of the above

Explanation / Answer

Question 11
When should a program explicitly use the this reference?
A. Accessing a private variable
B. Accessing a public variable
C. Accessing a local variable
D. Accessing a field that is shadowed by a local variable
Ans: D. Accessing a field that is shadowed by a local variable

Question 12

Composition is sometimes referred to as a(n) __________ relationship.
A. is-a
B. has-a
C. have-a
D. one-to-many

Ans: b. has-a

Question 13

How many parameters does the default constructor that C# creates for you have?
A. 3
B. 1
C. 0
D. Varies
Ans :c.0

Question 14
A class’s __________ initializes members of that class.
A. constructor
B. utility method
C. access modifier
D. None of the above.
Ans: A. Constructor

Question 15
In a method in which a parameter has the same name as an instance variable, using the this reference allows you to refer to:
A. the parameter.
B. the instance variable.
C. It varies depending on the situation.
D. None of the above
Ans: B. the instance variable.

Question 16
Stacks are commonly referred to as __________ data structures.
A. first-in, last-out
B. first-in, first-out
C. last-in, first-out
D. None of the above
Ans : C. last-in, first-out

Question 17
Failure to release resources when the program is no longer using them can cause:
A. buffer overflows.
B. resource leaks.
C. exceptions.
D. None of the above
Ans: B. resource leaks.

Question 18
Which of the following is FALSE?
A. A static method or property must be used to access private static instance variables.
B. A static method has no this reference.
C. A static method can be accessed even when no objects of its class have been instantiated.
D. A static method can call instance methods directly.
Ans: D. A static method can call instance methods directly.

Question 19
Which of the following describes a static variable?
A. A variable with one copy shared by all class objects
B. A variable whose value may not be changed
C. All of the above
D. None of the above
Ans: A. A variable with one copy shared by all class objects

Question 20
Abstract Data Types:
A. elevate the importance of data.
B. are approximations or models of real-world concepts and behaviors.
C. capture two notions—data representation and operations.
D. All of the above
Ans: D. All of the above

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