(tco 1) | Computer Science homework help

Question 17.

17. (TCO 3) If you have only two choices to offer the user, you should use two ____ rather than a list box. (Points : 5)

check boxes

text boxes

combo boxes

radio buttons

Question 1.

1. (TCO 7) The ____ method performs a case-sensitive search, which means that the case of the substring must match the case of the string for the method to return the True value. (Points : 5)

Insert

IndexOf

Contains

Substring

Question 2.

2. (TCO 7) Each character in a string is assigned a unique number that indicates its position in the string. The number is called a(n) ____. (Points : 5)

charpos

index

chardex

pos

Question 3.

3. (TCO 7) The ____ allows you to use pattern-matching characters to determine whether one string is equal to another string. (Points : 5)

Insert method

Like operator

Contains method

MenuStrip control

Question 4.

4. (TCO 4) When you pass a variable ____, the computer passes only the contents of the variable to the receiving procedure. (Points : 5)

by reference

by parameter

by data type

by value

Question 5.

5. (TCO 4) The procedure footer in a Function procedure is always ____. (Points : 5)

End Function

End Procedure

End Sub

End Sub Procedure

Question 6.

6. (TCO 3) An array called state() is declared and initialized as follows.

Dim state() As String = {“Ohio”, “Michigan”, “California”, “Arizona”}

What is the value of the subscript used to reference Arizona? (Points : 5)

Question 7.

7. (TCO 3) The statement ____ assigns the string “Arctic” to the element located in the second row, first column in the strOceans array. (Points : 5)

strOceans(1, 1) = {Arctic}

strOceans(0, 0) = (Arctic)

strOceans(1, 0) = “Arctic”

strOceans(0, 1) = “Arctic”

Question 8.

8. (TCO 2) The members of a structure can be variables, constants, or ____. (Points : 5)

structures

classes

procedures

control characters

Question 9.

9. (TCO 5) The purpose of a(n) ____ in OOP is to encapsulate the properties that describe an object, the methods that allow the object to perform tasks, and the events that allow the object to respond to actions. (Points : 5)

event

class

method

attribute

Question 10.

10. (TCO 2) The first word in a method name should be a(n) ____. (Points : 5)

verb

noun

adjective

preposition

Question 11.

11. (TCO 3) One advantage of using a structure is that a structure variable can be stored in an array _____. (Points : 5)

when its members have the same data types

even when its members have different data types

anytime there are no members

anytime there are less than three members

Question 12.

12. (TCO 8) The ____ object is responsible for retrieving the appropriate information from the database and storing it in the DataSet. (Points : 5)

TableAdapter

TblEmployBindingSource

BindingSource

DataGridView

Question 13.

13. (TCO 8) A database table is composed of _____. (Points : 5)

a group of related records

columns and rows

multiple tables

formatted reports

Question 14.

14. TCO 9) A server that hosts software such as the database-management system SQL Server or Oracle is considered a(n) _____. (Points : 5)

fax server

file server

e-mail server

application server

Question 15.

15. (TCO 9) Which of the following in NOT considered a network protocol? (Points : 5)

TCP/IP

ADO.net

NetBIO/NetBEUI

IPX/SPX

Question 16.

16. (TCO 10) __________ refers to the process of controlling who has access to a network. (Points : 5)

Authorization

Encryption

Authentication

Password control

Question 1.

1. (TCO 8) Define a bound control and describe the two ways to bind an object to a control. Give examples of when you might use a bound control and of when you would use an unbound control. (Points : 10)

Question 2.

2. (TCO 6)

A. Given a large array named intOunceArray, which stores weight in ounces, use a loop to set the value of each element in the array to the value of the subscript (index) of the element. For example, if the first element is set to the value 0, then the second element will be set to the value 1, and so on.

B. Write a Visual Basic statement to sort the elements in the inOunceArray. (Points : 10)

Question 3.

3. (TCO 5) Explain the functionality of arrays, including the benefits of storing data in an array. Explain how variables are distinguished in a one-variable array. (Points : 10)

Question 4.

4. (TCO 3) Name and describe the functionality of three different selection structures. Provide examples of when each might be used.

(Points : 10)

Question 1.

1. (TCO 2) You recently accepted the position as donations coordinator of your favorite charitable organization. You are surprised to learn that all the records are kept on 3×5 cards. Your first project is to transfer the data on the cards to a database. After that is complete, you want to be able to display all the items in the database. To that end, use the space below to define a class that will store the donor’s name, the item donated, and the date of the donation. Be sure to restrict access to these variables to methods that belong to the class. At this time, the only method you need to define for your class is a method to create a message box to display the donor’s name and the item donated and the donation date. Set the caption of the message box to the name of the club (you name it). Each item should be displayed on a separate line. For example, the message box for a member’s donation could look like this.

Donor’s Name: Sam Bradley

Item Donated: $50 cash

Donation Date: May 29, 2011 (Points : 15)

Question 2.

2. (TCO 5)

A. You are asked to create a form with a textbox named txtQty, a label named lblStatus, and a button named btnGetStatus. In the space below, write the Visual Basic code to be placed in the button-click event handler. After your code declares variables and retrieves the quantity on hand entered by the user, create a three-alternative selection statement that does the following.

• sets a string named strStatus to “Surplus” if the quantity entered by the user is greater than or equal to 100

• sets a string named strStatus to “Reorder” if the quantity entered by the user is less than 35

• sets a string named strStatus to “No Action” if neither of the conditions above is true

The last step is to display the status string in the label.

B. What will be the Handles clause at the end of the sub procedure? (Points : 15)

Question 3.

3. (TCO 3) You are part of a team given the task of designing an application to determine a student’s letter grade for a short course. The application will process a quiz, a project, a midterm exam, and a final exam to determine the total score. The result of dividing the total score by the total points available will be used to determine the letter grade for the student. The application will then display the total score with one place to the right of the decimal point and the letter grade. The calculations will require a constant to store the total points available for the course.

A. Your first task is to declare each variable and constant that the form’s event handler sub procedure will need. Use an appropriate naming convention.

B. What name will you give the form?

Note: Your answer will be more readabl

(tco 1) | Computer Science homework help

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