Deck 4: Making Decisions in a Program

Question 1

You use the ____ operator to connect or link together strings.

A) addition
B) concatenation
C) append
D) combination

Answer 1

B

Question 2

The diamond in a flowchart is called the decision symbol, because it is used to represent the condition in both the selection and repetition structures.

Answer 2

True

Question 3

Comparison operators have an order of precedence.

Answer 3

False

Question 4

The condition in a selection structure must evaluate to either a True or False answer only.

Question 5

Comparison operators are also referred to as ____ operators.

A) syntax
B) Boolean
C) arithmetic
D) relational

Question 6

In Visual Basic, ____ is the not equal to operator.

A) >>
B) >=
C) <=
D) <>

Question 7

String comparisons in Visual Basic are case-sensitive.

Question 8

In Visual Basic, ____ is the greater than or equal to operator.

A) >>
B) >=
C) <=
D) <>

Question 9

You use the ____ method to convert a string to uppercase.

A) Upper
B) ConvertUpper
C) ParseUpper
D) ToUpper

Question 10

In a single-alternative selection structure, the tasks to perform when the condition is true are called the ____ path.

A) true
B) right
C) correct
D) specific

Question 11

You use the ____ method to convert a string to lowercase.

A) Lower
B) ConvertLower
C) ParseLower
D) ToLower

Question 12

The numbers chosen from the Visual Basic pseudo-random number generator are completely random because a definite mathematical algorithm is used to select them.

Question 13

Another term for a selection structure is a ____ structure.

A) sequential
B) decision
C) form
D) repetition

Question 14

A variable that has block scope can be used ____.

A) within the procedure in which it is declared
B) only within the statement block in which it is declared
C) within any statement blocks in the program
D) within any procedures in the program

Question 15

The set of statements contained in each path of the If...Then...Else statement is referred to as a(n) ____.

A) statement clause
B) operator block
C) statement block
D) comparison clause

Question 16

In a dual-alternative selection structure, the word "else" to denote the beginning of the ____ path.

A) true
B) false
C) correct
D) wrong

Question 17

You do not always need to include the ____ clause in an If...Then...Else statement.

A) If
B) Then
C) Else
D) End If

Question 18

Visual Basic provides the ____ statement for coding single-alternative and dual-alternative selection structures.

A) If...Then...Else
B) Do...Loop
C) Begin..End
D) Select...Case

Question 19

If intQuantity >= 10 Then dblTotal = intQuantity * 2.5
Else
DblTotal = intQuantity * 3.5
End If
The intQuantity variable contains the number 8 before the code above is processed. What value will be in the dblTotal variable after the code is processed?

A) 0
B) 20
C) 28
D) 35

Question 20

Variables declared within a statement block are referred to as ____ variables.

A) global
B) transient
C) block-level
D) internal

Question 21

When you use the ____ operator to combine two sub-conditions, the resulting compound condition evaluates to True only when both sub-conditions are True.

A) And
B) Or
C) AndAlso
D) OrElse

Question 22

If the intAge variable contains the number 30, the condition If intAge > 20 AndAlso intAge < 30 Then will evaluate to

A) True
B) False
C) Yes
D) No

Question 23

Programmers refer to the process of verifying that the input data is within the expected range as ____.

A) range checking
B) data verification
C) data validation
D) absolute programming

Question 24

____________________ tables summarize how the computer evaluates the logical operators in an expression.

Question 25

Truth tables summarize how the computer evaluates the ____ operators in an expression.

A) integer
B) logical
C) arithmetic
D) string

Question 26

Within a Visual Basic expression, logical operators are evaluated after any arithmetic or ____ operators in an expression.

A) comparison
B) string
C) open
D) closed

Question 27

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
A logical operator where the compound condition evaluates to False only when both sub-conditions are False.

Question 28

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
The concatenation operator.

Question 29

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
Specifies the decision you are making.

Question 30

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
The less than operator.

Question 31

The ____________________ structure indicates that a decision (based on some condition) needs to be made before any further processing can occur.

Question 32

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
The greater than operator.

Question 33

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
The logical operator where the compound condition evaluates to True only when both sub-conditions are True.

Question 34

A(n) ______________________________ is a device that produces a sequence of numbers that meet certain statistical requirements for randomness.

Question 35

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
Advances the insertion point to the next line in a control.

Question 36

You create a Random object by declaring it in a(n) ____________________ statement.

Question 37

____________________ operators allow you to combine two or more conditions into one compound condition.

Question 38

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
Requires a specific set of tasks to be performed only when the condition is true.

Question 39

Match each item with a statement below.
a.ControlChars.NewLine constant
f.AndAlso
b.condition
g.&
c.>
h.single-alternative selection structure
d.dual-alternative selection structure
i.OrElse
e.<
Contains two sets of instructions: one set is processed when the condition is true and the other set is processed when the condition is false.

Question 40

Pseudo-random numbers are chosen with equal probability from a(n) ____ set of numbers.

A) unlimited
B) finite
C) infinite
D) select

Question 41

What two methods does Visual Basic provide that you can use to solve the case problems that occur when comparing strings?

Question 42

How do you use the pseudo-random number generator in a procedure?

Question 43

When do you use a selection structure?

Question 44

Explain logical operators in terms of how they are used and evaluated within an expression. Provide an example of a logical operator.

Question 45

How do you connect or link two strings together?

Question 46

Explain what happens when you use the AndAlso operator.

Question 47

Describe the purpose of the text box CharacterCasing property.

Question 48

What is a pseudo-random number generator?

Question 49

Explain what happens when you use the OrElse operator.

Question 50

What are the similarities and differences between variables declared at the beginning of a procedure and variables declared within a statement block?