Self Review Exercises 5

Question 1

SRE 5

True or False: The Case Else is required in the Select … Case selection statement

Answer 1

False. The Case Else is optional

Question 2

SRE 5

True or False: The expression x > y And a < b is true if either x > y is true or a < b is true.

Answer 2

False. BOTH of the simple conditions must be true for the entire expression to be true.

Question 3

SRE 5

True or False: An expression containing the Or operator is true if either or both of its operands are true

Answer 3

True

Question 4

SRE 5

True or False: The expression x <= 4 is true if x is less than or equal to y and y is greater than 4

Answer 4

True

Question 5

SRE 5

True or False: Logical operator Or performs short-circuit evaluation

Answer 5

False. Logical Operator Or always evaluates both of its operands

Question 6

SRE 5

A unary operator _____

a) requires exactly one operand
b) requires two operands
c) must use the AndAlso keyword
d) can have no operands

Answer 6

a) requires exactly one operand

Question 7

SRE 5

The ____ operator is used to ensure that two conditions are both true

a) Xor
b) AndAlso
c) Also
d) OrElse

Answer 7

b) AndAlso

Question 8

SRE 5

Counter controlled repetition _____ the control variable after each iteration

a) increments
b) initializes
c) decrements
d) Either answer 1 or 3

Answer 8

d) Either answer 1 or 3

Question 9

SRE 5

Select Case is a ______ selection statement

a) multiple
b) double
c) single
d) None of the above

Answer 9

a) multiple

Question 10

SRE 5

When does the Case Else body execute?

a) Every time a Select Case statement executes
b) When more than one Case matches the controlling expression
c) When the controlling expression does not match any other cases
d) None of the above

Answer 10

c) When the controlling expression does not match any other cases

Question 11

SRE 5

A Case that handles all values larger than a specified value must precede the > operator with keyword ___

a) Select
b) Is
c) Case
d) All

Answer 11

b) Is

Question 12

SRE 5

Use a(n) ____ to separate multiple conditions in a Case statement

a) period
b) asterisk
c) comma
d) colon

Answer 12

c) comma

Question 13

SRE 5

True or False: The Exit Do, Exit For, and Exit While statements, when executed in a repetition statement, cause immediate exit from only the current iteration of the repetition statement.

Answer 13

False.

These statements, when executed in a repetition statement, cause immediate exit from the repetition statement. The Continue Do, Continue For, and Continue While statements, when executed in a repetition statement, cause immediate exit from the current iteration of the repetition statement.

Question 14

SRE 5

True or False: The Do… Loop While statement tests the loop-continuation condition before the loop body is performed

Answer 14

False.

The Do… Loop While statement tests the loop-continuation condition after the loop body is performed.

Question 15

SRE 5

True or False: The Or operator has a higher precedence than the And operator.

Answer 15

False.

The And operator has higher precedence than the Or operator.

Question 16

SRE 5

Which property specifies whether a CheckBox is selected?

a) Selected
b) Checked
c) Clicked
d) Check

Answer 16

b) Checked

Question 17

SRE 5

Call the ____ method of class MessageBox to display a message dialog.

a) Display
b) Message
c) Open
d) Show

Answer 17

d) Show

Question 18

SRE 5

The Do…Loop While statement body repeats when the loop-continuation condition ____.

a) is False after the body executes
b) is False before the body executes
c) is True after the body executes
d) is True before the body executes

Answer 18

c) is True after the body executes

Question 19

SRE 5

An infinite loop occurs when the loop-continuation condition in a Do While… Loop or Do…Loop While statement ______.

a) never becomes True
b) never becomes False
c) is False
d) is tested repeatedly

Answer 19

b) never becomes False

Question 20

SRE 5

The Do…Loop Until statement checks the loop-termination condition ______.

a) for False after the body executes
b) for False before the body executes
c) for True after the body executes
d) for True before the body executes

Answer 20

c) for True after the body executes

Question 21

SRE 5

What aspect of the control variable determines whether looping should continue?

a) name
b) initial value
c) type
d) final value

Answer 21

b) initial value

Question 22

SRE 5

If the Step is omitted, the increment of a For…Next statement defaults to ____.

a) 1
b) -1
c) 0
d) Either answer 1 or 2

Answer 22

a) 1

Question 23

SRE 5

The value before the To keyword in a For…Next statement specifies the _____.

a) initial value of the counter variable
b) final value of the counter variable
c) increment
d) number of times the statement increments

Answer 23

a) initial value of the counter variable

Question 24

SRE 5

Which of the following is the appropriate For…Next header for varying the control variable over the following sequence of values: 25, 20, 15, 10, 5?

a) For i As Integer = 5 to 25 Step 5
b) For i As Integer = 25 to 5 Step -5
c) For i As Integer = 5 to 25 Step -5
d) For i As Integer = 25 to 5 Step 5

Answer 24

b) For i As Integer = 25 to 5 Step -5

Question 25

SRE 5

Which of the following statements describes the For…Next header shown below?

For i As Integer = 81 to 102

a) Vary the control variable from 81 to 102 in increments of 1
b) Vary the control variable from 81 to 102 in increments of 0
c) Vary the control variable from 102 to 81 in increments of -1
d) Vary the control variable from 81 to 102 in increments of 2

Answer 25

a) Vary the control variable from 81 to 102 in increments of 1

Question 26

SRE 5

The _____ property determines by how much the current number in a NumericUpDown control changes when the user clicks the up arrow or the down arrow

a) Amount
b) Step
c) Increment
d) Next

Answer 26

c) Increment

Question 27

SRE 5

Which For…Next header alters the control variable from 0 to 50 in increments of 5?

a) For i = 0 to 50 Step 50
b) For 0 to 50 Step 5
c) For i = 0 to 50 Step = 5
d) For i = 0 to 50 Step 5

Answer 27

d) For i = 0 to 50 Step 5