Unit 6 and 7 Review

Question 1

What is the value of dblAnswer after the following code executes?
Private Sub btnAverage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAverage.Click
Dim dblNum1, dblNum2, dblNum3, dblAnswer As Double
dblNum1 = 10
dblNum2 = 20
dblNum3 = 30
FindAverage(dblNum1, dblNum2, dblNum3, dblAnswer)
End Sub
Private Sub FindAverage(ByVal dblNumber1 As Double, ByVal dblNumber2 As Double, ByVal dblNumber3 As Double, ByRef dblAns As Double)
dblAns = (dblNumber1 + dblNumber2 + dblNumber3) / 3
End Sub

A. 20
B. 30
C. 10
D. 0

Answer 1

A. 20

Question 2

Which would correctly call the sub procedure defined below?
Private Sub CalcTotalPrice (ByVal dblPrice As Double, ByVal intTaxRate As Integer,ByRef dblTotalPrice As Double)
A. dblTotalPrice = CalcTotalPrice(dblPrice, intTaxRate)
B. CalcTotalPrice(dblTotalPrice, intTaxRate, dblPrice)
C. CalcTotalPrice(dblPrice, intTaxRate, dblTotalPrice)
D. CalcTotalPrice(dblPrice, dblTotalPrice, intTaxRate)

Answer 2

C. CalcTotalPrice(dblPrice, intTaxRate, dblTotalPrice)

Question 3

Given the following statements:
    Dim intX As Integer = 0
    Me.lblAnswer.Text = Math.Sign(intX)
What is displayed in the label?
A. 1
B. 0
C. -1
D. intX

Answer 3

B. 0

Question 4

What is the result of the following code?
strNumEntered = “Five”
Result = Int16.TryParse(strNumEntered, intTest)
A. Result = False, intTest = 5
B. Result = False, intTest = 0
C. Result = True, intTest = 0
D. Result = True, intTest = 5

Answer 4

B. Result = False, intTest = 0

Question 5

Assuming that a ListBox named lstAnswer exists, which statement correctly adds an item to the ListBox?
A. lstAnswer.Item.Add("Answer")
B. lstAnswer.AddItems("Answer")
C. lstAnswer.Items.Add = "Answer"
D. lstAnswer.Items.Add("Answer")

Answer 5

D. lstAnswer.Items.Add(“Answer”)

Question 6

Which event should be used with a MenuStrip?

A. .Click
B. Selected
C. Changed
D. .CheckChanged

Answer 6

A. .Click

Question 7

Which best describes the purpose of function procedures?
A. To alter arguments after they have been passed
B. To perform a specific task and then return one value
C. They must be called from another procedure using the CALL statement
D. To perform several related tasks

Answer 7

B. To perform a specific task and then return one value

Question 8

What are the variables called that are shown in the procedure header for a SUB procedure?

A. Parameters
B. Constants
C. Arguments
D. Values

Answer 8

A. Parameters

Question 9

Which statement would correctly read input in from an InputBox into the string variable
A. strNumerator = InputBox(“Enter a numerator”, “Numerator”)
B. InputBox(“Enter a numerator”, “Numerator”) = strNumerator
C. intNumerator = InputBox(“Enter a numerator”, “Numerator”)
D. strNumerator InputBox(“Enter a numerator”, “Numerator”)

Answer 9

A. strNumerator = InputBox(“Enter a numerator

Question 10

Which segment of code will correctly test a Boolean expression to see if input from a TextBox can beconverted to an double?

A. If Double.TryParse(txtInput.Text, dblNum) Then
B. If TryParse. Double(dblNum, txtInput) Then
C. If TryParse(txtInput.Text, dblNum) Then
D. If TryParse. Double(txtInput.Text, dblNum) Then

Answer 10

A. If Double.TryParse(txtInput.Text, dblNum) Then

Question 11

Which is the correct syntax to declare the function CalcNum’s header?

A. Function CalcNum (ByVal intNum1 As Integer, ByVal intNum2 As Integer) As Integer
B. Sub CalcNum (ByVal intNum1 As Integer, ByVal intNum2) As Integer
C. Function CalcNum (ByRef intNum1 As Integer, ByVal intNum2 As Integer) As Intege
D. Function CalcNum (ByVal intNum1 As Integer, ByVal intNum2 As Integer)

Answer 11

A. Function CalcNum (ByVal intNum1 As Integer, ByVal intNum2 As Integer) As Integer

Question 12

Which statement will return True if the user selects the Yes button of a Message Box?
Selected Answer:

A. If MessageBox.Show(“Would you like to continue?”, “Continue”,MessageBoxButtons.YesNo)=DialogResult.Yes
B. If MessageBox.Show(“Would you like to continue?”, “Continue”, MessageBoxButtons.YesNo) =Result.Yes
C. If MessageBox.Show(“Would you like to continue?”, “Continue”, MessageBoxButtons.YesNo = OK)
If MessageBox.Show(“Would you like to continue?”, “Continue”, MessageBoxButtons.YesNo) =DialogResult.No

Answer 12

A. If MessageBox.Show(“Would you like to continue?”, “Continue”,MessageBoxButtons.YesNo)=DialogResult.Yes

Question 13

Given the function header, which statement below is written to correctly call the function?
    Function calcTotalPrice (ByVal dblPrice As Double, ByVal intQuantity As Integer) As Double
A. calcTotalPrice(intQuantity, dblPrice)
B. dblAnswer = calcTotalPrice(dblPrice, dblTaxRate, intQuantity)
C. dblAnswer (calcTotalPrice(intQuantity, dblPrice))
D. dblAnswer = calcTotalPrice(intQuantity, dblPrice)

Answer 13

D. dblAnswer = calcTotalPrice(intQuantity, dblPrice)

Question 14

Which correctly calls a function procedure?
A. Call Function (strGrade)
B. strGrade=GPA(numDouble )
C. Call GPA() Function
D. Function = GPA( )

Answer 14

B. strGrade=GPA(numDouble )

Question 15

What is the value of dblGPA after the following statement executes if the value 3.10 is entered into theTextBox?
blnAnswer = Double.TryParse(txtGPAInput.Text, dblGPA)
A. There is not enough information to determine.
B. 3.1
C. “3.10”
D. 0

Answer 15

B. 3.1

Question 16

Which code segment would return the position number of the letter “m” in the string strName?

A. strName.IndexOf(“m”)
B. strName.Index(“m”)
C. strName.IndexOf(m)
D. strName.Index(m)

Answer 16

A. strName.IndexOf(“m”)

Question 17

Which declares an integer array with 4 elements?
A. Dim myArray(4) Integer
B. Dim myArray(3) As Integer
C. As Integer Declare myArray(4)
D. Declare Array As Integer myArray(4)

Answer 17

B. Dim myArray(3) As Integer

Question 18

Given the following block of code, what is the output if the value “two” is entered?
If Int16.TryParse( txtNum.Text, intNum) Then
intNum = Convert.ToInt16(txtNum.Text) MessageBox.Show(“Your number is: & intNum.ToString)
Else MessageBox.Show(“Enter numeric values.”)
End If

A. Enter numeric values.
B. 2
C. Two
D. 0

Answer 18

A. Enter numeric

Question 19

Which code would be used to display a message box on a form?
A. Display("String")
B. Display("String")
C. ShowMessage("String")
D. MessageBox.Show("String")

Answer 19

D. MessageBox.Show(“String”)

Question 20

Using the code segment below, what is the SelectedIndex value of Apple?
lstItems.Items.Add(“Apple”)
lstItems.Items.Add(“Banana”)
lstItems.Items.Add(“Pear”)

A. 0
B. 1
C. 2
D. 3

Answer 20

A. 0

Question 21

Given the following code, what is the value of strParent after execution?
Dim strParent As String = “Dad”
strParent = strParent.Replace(“D”, “L”)
A. Dad
B. Lad
C. LaL
D. Dal

Answer 21

B. Lad

Question 22

What is the result of the following code?
strNumEntered = “45”
Result = Int32.TryParse(strNumEntered, intTest)
A. Result = True, intTest = 0
B. Result = True, intTest = 45
C. Result = False, intTest = 0
D. Result = False, intTest = 45

Answer 22

B. Result = True, intTest = 45

Question 23

Which statement correctly creates and initializes the array?
A. Dim dblQuiz() As Double = (96.5, 87.6, 87.4, 92.8)
B. Dim dblQuiz(3) As Double = {96.5, 87.6, 87.4, 92.8}
C. Dim dblQuiz() As Double = {96.5, 87.6, 87.4, 92.8}
D. Dim dblQuiz(3) As Double = (96.5, 87.6, 87.4, 92.8)

Answer 23

C. Dim dblQuiz() As Double = {96.5, 87.6, 87.4, 92.8}

Question 24

Which function is used to convert a string entry in a textbox to a double number?
A. Convert(txtAge.Text)
B. Convert.ToInt32(txtAge.Text)
C. Convert.ToInt16(txtAge.Text)
D. Convert.ToDouble(txtAge.Text)

Answer 24

D. Convert.ToDouble(txtAge.Text)