Question 1

When declaring a variable of type String, you must specify a length for the string.

Accepted Answer

A) True 
 B)False

Question 2

The following lines are valid.
Dim h As String = "Hello" 
txtBox.Text = CStr(h.IndexOf("h"))

Accepted Answer

A) True 
 B)False

Question 3

What will be the output of the following statement? 
txtBox.Text = (2/3).ToString("P4")

Accepted Answer

A)  0.6666 
B)  0.6667 
C)  66.66% 
D)  66.6667%

Question 4

What value will be assigned to the numeric variable x when the following statement is executed? x = 2 + 3 * 4

Accepted Answer

A)  20 
B)  14 
C)  92 
D)  234

Question 5

If TAX_RATE is a named constant of type Double, which of the following statements is valid?

Accepted Answer

A)  TAX_RATE += 1 
B)  dblVar = TAX_RATE + 1 
C)  TAX_RATE = 2 * TAX_RATE 
D)  All of the above

Question 6

The value assigned to a class-level named constant can be changed in any procedure.

Accepted Answer

A) True 
 B)False

Question 7

What will be the output of the following statement? 
txtBox.Text = CStr(Math.Round(17 / 2))

Accepted Answer

A)  8 
B)  9 
C)  8.5 
D)  17.00

Question 8

If strVar.Length is 5, then the value of 
strVar.Substring(4, 1) 
is the last character of the 
value of strVar.

Accepted Answer

A) True 
 B)False

Question 9

A numeric variable that has not been assigned a value has the default value zero.

Accepted Answer

A) True 
 B)False

Question 10

What message will be displayed by the following statement: MessageBox.Show("This is a test.", "Test")

Accepted Answer

A)  This is a test. 
B)  Nothing. 
C)  Test 
D)  This is a test. Test

Question 11

Which of the following statements removes all text from lstBox?

Accepted Answer

A)  lstBox.Clear 
B)  lstBox.Items.Clear 
C)  lstBox.Text.Clear 
D)  lstBox.Items.Add("")

Question 12

What will be the output of the following lines? Dim alphabet, soup As string
alphabet - "abcdefghijklmnopqrstuvwxyz"
soup = alphabet. ToUpper
txtBox.Text - alphabet.Substring $( 0,5 ) \&$ soup. Sabstring $( 0,5 )$

Accepted Answer

A)  abcdeABCDE 
B)  ABCDEABCDE 
C)  eE 
D)  EE

Question 13

Assume that x, y, and temp are Integer variables. Which of the following lines of code swaps the values of x and y?

Accepted Answer

A)  x = y 
y = x 
B)  x = temp 
x = y 
y = temp 
C)  temp = x
 x = y
 y = temp 
D)  x = y temp = x y = 
temp

Question 14

The Trim method is used to remove all blank space before and after a string.

Accepted Answer

A) True 
 B)False

Question 15

What will be the output of the following statement? 
txtBox.Text = (1234.56789).ToString("N3")

Accepted Answer

A)  1234.568 
B)  1230 
C)  1,234.568 
D)  1,230

Question 16

When the Mask property of a masked text box is set to LL, at most two characters (consisting of letters or spaces) can be entered into the masked text box.

Accepted Answer

A) True 
 B)False

Question 17

What will be the output of the following line? 
txtBox.Text = "2" & 3

Accepted Answer

A)  23 
B)  2 3 
C)  5 
D)  Syntax error

Question 18

After the statement txtBox.Text = "" is executed, the text box will be clear and the cursor will appear inside the text box.

Accepted Answer

A) True 
 B)False

Question 19

A string literal is a sequence of characters that is treated as a single entity.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following expressions will yield the string "John Doe", where name1 = "John Blake" and name2 = "Janet Doe"?

Accepted Answer

A)  name1.Substring(0, 4) & name2.Substring(6, 8) 
B)  name1.Substring(0, 4) & name2.Substring(0, 3) 
C)  name1.Substring(0, 5) & name2.Substring(6, 3) 
D)  None of the above

Exam 3: Variables, Input, and Output

When declaring a variable of type String, you must specify a length for the string.

The following lines are valid. Dim h As String = "Hello" txtBox.Text = CStr(h.IndexOf("h"))

What will be the output of the following statement? txtBox.Text = (2/3) .ToString("P4")

What value will be assigned to the numeric variable x when the following statement is executed? x = 2 + 3 * 4

If TAX_RATE is a named constant of type Double, which of the following statements is valid?

The value assigned to a class-level named constant can be changed in any procedure.

What will be the output of the following statement? txtBox.Text = CStr(Math.Round(17 / 2) )

If strVar.Length is 5, then the value of strVar.Substring(4, 1) is the last character of the value of strVar.

A numeric variable that has not been assigned a value has the default value zero.

What message will be displayed by the following statement: MessageBox.Show("This is a test.", "Test")

Which of the following statements removes all text from lstBox?

What will be the output of the following lines? Dim alphabet, soup As string alphabet - "abcdefghijklmnopqrstuvwxyz" soup = alphabet. ToUpper txtBox.Text - alphabet.Substring $( 0,5 ) \&$ soup. Sabstring $( 0,5 )$

Assume that x, y, and temp are Integer variables. Which of the following lines of code swaps the values of x and y?

The Trim method is used to remove all blank space before and after a string.

What will be the output of the following statement? txtBox.Text = (1234.56789) .ToString("N3")

When the Mask property of a masked text box is set to LL, at most two characters (consisting of letters or spaces) can be entered into the masked text box.

What will be the output of the following line? txtBox.Text = "2" & 3

After the statement txtBox.Text = "" is executed, the text box will be clear and the cursor will appear inside the text box.

A string literal is a sequence of characters that is treated as a single entity.

Which of the following expressions will yield the string "John Doe", where name1 = "John Blake" and name2 = "Janet Doe"?

Exam 3: Variables, Input, and Output

When declaring a variable of type String, you must specify a length for the string.

The following lines are valid. Dim h As String = "Hello" txtBox.Text = CStr(h.IndexOf("h"))

What will be the output of the following statement? txtBox.Text = (2/3) .ToString("P4")

What value will be assigned to the numeric variable x when the following statement is executed? x = 2 + 3 * 4

If TAX_RATE is a named constant of type Double, which of the following statements is valid?

The value assigned to a class-level named constant can be changed in any procedure.

What will be the output of the following statement? txtBox.Text = CStr(Math.Round(17 / 2) )

If strVar.Length is 5, then the value of strVar.Substring(4, 1) is the last character of the value of strVar.

A numeric variable that has not been assigned a value has the default value zero.

What message will be displayed by the following statement: MessageBox.Show("This is a test.", "Test")

Which of the following statements removes all text from lstBox?

What will be the output of the following lines? Dim alphabet, soup As string alphabet - "abcdefghijklmnopqrstuvwxyz" soup = alphabet. ToUpper txtBox.Text - alphabet.Substring (0,5) &( 0,5 ) \&(0,5) & soup. Sabstring (0,5) ( 0,5 ) (0,5)

Assume that x, y, and temp are Integer variables. Which of the following lines of code swaps the values of x and y?

The Trim method is used to remove all blank space before and after a string.

What will be the output of the following statement? txtBox.Text = (1234.56789) .ToString("N3")

When the Mask property of a masked text box is set to LL, at most two characters (consisting of letters or spaces) can be entered into the masked text box.

What will be the output of the following line? txtBox.Text = "2" & 3

After the statement txtBox.Text = "" is executed, the text box will be clear and the cursor will appear inside the text box.

A string literal is a sequence of characters that is treated as a single entity.

Which of the following expressions will yield the string "John Doe", where name1 = "John Blake" and name2 = "Janet Doe"?

What will be the output of the following lines? Dim alphabet, soup As string alphabet - "abcdefghijklmnopqrstuvwxyz" soup = alphabet. ToUpper txtBox.Text - alphabet.Substring $( 0,5 ) \&$ soup. Sabstring $( 0,5 )$