Itse 1331: Introduction To Vb.net Ch. 7 - 9

Front 1

A Windows application’s default start up object is:

The first form created.
Any procedure.
Any form created.
A procedure named Main.

Back 1

The first form created.

Front 2

Which statements about Form Name Properties and Form Files are true?

i. You assign a name to a form in its Name property, using the standard prefix of frm.

ii. A form should be assigned a name that describes the form’s purpose..

iii. The code associated with a form created in Visual Basic is stored in a Form File with a .vb extension added to the form’s Name property.

iv. If you change a form’s file name, the Name property changes automatically to match the file’s name .

Back 2

all are true

Front 3

At design time you can switch between forms by double clicking the form’s entry in the ________________ window.

Project
Solution Explorer
Code
Design

Back 3

Solution Explorer

Front 4

A ______________ is a program structure that describes an object’s properties and methods.

Variable
Stuct
Class
Code

Back 4

Class

Front 5

Which statements about modal forms are true?

i. You show the form using either the ShowDialog method or the Show method.

ii. When a modal form is displayed, no other form can be displayed until the form is closed or hidden.

iii. When a modal form is displayed, no other statements in the procedure will execute until the form is closed or hidden.

iv. The general format to close a modal form is me.close(). .

Back 5

all but i

Front 6

A procedure or variable declarations used in more than one file should be stored in a ___________ Module.

Public
Private
Form
Standard

Back 6

Standard

Front 7

Which of these statements are false?

i. You can designate either a form or a public procedure called Main as an applications startup object.

ii. A procedure designated as a startup object will display the default form automatically after all its statements are executed.

iii. Main can be written as a function instead of a procedure returning an integer value to indicate the success or failure of the code’s execution..

iv. You can designate either a form or a private procedure called Main as an applications startup object.

Back 7

ii and iv only

Front 8

Using the ___________ keyword makes a class level variable available to methods outside of the class.

Private
Public
Dim
Standard

Back 8

Public

Front 9

To disable a menu item you:

set the Enabled property to false.
set the Show property to false.
set the Disabled property to true.
set the Visible property to false.

Back 9

set the Enabled property to false.

Front 10

Which one of the following is not a standard menu item that should always be added to your menu systems?

File
An About command on the Help menu.
An Exit command on the File menu
An Exit command on the Help menu.
Help

Back 10

An Exit command on the Help menu.

Front 11

Which are characteristics of an Array?

i. An array stores multiple values of the same type using one name.

ii. Values stored within an array are called elements.

iii. An index is a number used to identify a specific element within the array.

iv. If n is the number of elements within an array, the index of the first element in the array would be 0 and the index of the last element in the array would be n-1.

Back 11

all are true

Front 12

In the declaration: Dim studentID(10) As Integer the number 10 refers to:

None of the above.

The maximum number of characters each element in the array can contain.

The initial value of the first element in the array

The index number for the last value in the array.

The number of elements in the array.

Back 12

The index number for the last value in the array.

Front 13

Assigning an integer to a variable, and then using that variable as a subscript to an array, allows you to utilize a ____________ to access each element of the array.

sub procedure or function
class
loop
command

Back 13

loop

Front 14

A special loop designed specifically to read values from arrays, but not to modify the values, is called:

a For…Next loop
a Do…Each loop
a For…Each loop
a Do…Until loop
a Do…While loop

Back 14

a For…Each loop

Front 15

If an array is declared with the following syntax: Dim studentID(10) As Integer the number statement studentID.Length will return a value of:

The maximum number of characters each element in the array contains.
11
10
0

Back 15

11

Front 16

What would the following snippet of code using an array named intValue of 50 integer values accomplish? Dim temp As Integer Dim i As Integer Dim j As Integer

For i = 0 to (intValue.Length - 2)
For j = (i + 1) to (intValue.Length - 1)
If intValue(i) < intValue(j) Then
temp = intValue(i)
intValue(i) = intValue(j)
intValue(j) = temp
End If
Next j
Next i


It would sort the array from highest to lowest, so that intValue(0) would contain the largest value in the array, and intValue(49) would contain the smallest value in the array.

It would sort the array from lowest to highest, so that intValue(0) would contain the smallest value in the array, and intValue(49) would contain the largest value in the array.

It would make IntValue(0) the smallest value in the array

It would make all the array values in intValue alike.

Back 16

It would sort the array from highest to lowest, so that intValue(0) would contain the largest value in the array, and intValue(49) would contain the smallest value in the array.

Front 17

Which statements about arrays are true?


i. The word Preserve is optional, and when used with a ReDim statement makes sure that any existing values within the array are not destroyed.

ii. A ReDim statement redefines the dimension of an existing array

iii. A ReDim statement is used when the number of elements an array will contain is known at design time.

iv. The statement: Dim intValue() as Integer is incorrect syntax because the array size is missing.

Back 17

all but iii and iv are true

Front 18

To pass an array to a procedure or function, the parameter variable is declared as an array with

An array can not be passed to a procedure or a function.

the upper subscript left blank as open parenthesis

the upper subscript as a variable to be defined by the user within the sub procedure or function

the upper subscript defined

Back 18

the upper subscript left blank as open parenthesis

Front 19

In the multidimensional array declaration: Dim intValues(4, 15) as Integer the number 15 stands for:

The number of total values that can be stored in the array

The last dimension, where the array intValue starts at subscript 4 and ends at subscript 15.

The highest column subscript

The highest row subscript

Back 19

The highest column subscript

Front 20

In the multidimensional array declaration: Dim newValues(2, 5, 15) as Decimal the array dimension is:

15
5
Can not be determined
2
3

Back 20

3

Front 21

Which statements are true about Timer Controls?


i. A Timer Control is used to automatically execute code at regular intervals during the run of an application.

ii. A Timer Control responds to a Tick Event. To generate a Tick Event procedure, double click a Timer Control that has been placed within a form.

iii. A Timer Control has three important properties; Enable, Visible, and Interval.

iv. The Interval property works in milliseconds; therefore if the property is set to 100, the interval will restart every second.

Back 21

all but iii and iv are true

Front 22

When a control is ___________, it is positioned directly against one of the edges of a form.

anchored
docked
created
sized

Back 22

docked

Front 23

Which statements about the random class are true?


i. The random seed value is based on the time of day down to the nano-second.

ii. The random seed value provides the initial input that generates the next random number in the series.

iii. The statement: Private rand As New Random(12) creates an instance of the Random class with a variable name rand, and with a seed of 12.

iv. The statements: Private rand As New Random Dim intNum As Integer = rand,next(100) assigns to intNum a randomly generated integer value somewhere between 0 and 99.

Back 23

all but i is true

Front 24

In a ______________ file, the data in the file must read from its beginning until its end.

text
sequential access
random access
binary

Back 24

sequential access

Front 25

Which statements are correct for declaring and writing to a file:



Dim myFile as System.Streamwriter
myFile = WriteLine.File.Createtext(myData.txt)



Dim myFile as System.IO.Streamwriter
myFile = System. CreateText(“myData.txt”)



Dim myFile as Streamwriter
myFile = .File.CreateText(“myData.txt”)



Dim myFile as System.Streamwriter
myFile = File.Createtext(“myData.txt”)

Back 25

Dim myFile as Streamwriter
myFile = .File.CreateText(“myData.txt”)

Front 26

What does the WriteLine method of the StreamWriter class do?

It writes a line of data to a file, then writes a newline character immediately after the data.

It writes a line of data to a file, then writes a space character immediately after the data.

It writes a line of data to a file, then writes a tab character immediately after the data.

It writes a line of data to a file.

Back 26

It writes a line of data to a file, then writes a newline character immediately after the data.

Front 27

What is the difference between the WriteLine method and the Write method of the StreamWriter class?

The WriteLine method only writes text, while the Write method writes any data type.

The Write method writes a line of data to a file and writes a new line character at the end of the line; while the WriteLine method writes only the line of data,.

The WriteLine method writes a line of data to a file and writes a new line character at the end of the line; while the Write method writes only the line of data,.

There is no difference.

Back 27

The WriteLine method writes a line of data to a file and writes a new line character at the end of the line; while the Write method writes only the line of data,.

Front 28

The ________ method writes any unsaved information remaining in the file buffer and releases memory allocated by the StreamWriter object.

Write
WriteLine
Save
Close
Open

Back 28

Close

Front 29

To determine a file exists, you should use the following method syntax:

File.Exists(filename)
File.Exist(filename)
File.Close(filename)
File.Open(filename)

Back 29

File.Exists(filename)

Front 30

To display a standard Windows.Save As dialog box, use the _________control.

SaveFileDialog
ColorDialog
OpenFileDialog
FontDialog

Back 30

SaveFileDialog

Front 31

To print output to the printer, you use the _________control.

PrintFile
PrintDocument
PrintOutput
PrintPage

Back 31

PrintDocument

Front 32

To print a 3 column output of 10 spaces in each column, you would use the method:

String.Output
e.Graphics
String.Format
Print.Output

Back 32

String.Format

Front 33

A ______________ is a data type that is user created, containing one or more variables known as fields.

Class
Object
Function
Structure
File

Back 33

Structure