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Exam : Microsoft 70-547(VB)
Title : PRO:Design and Develop Web-Basd Apps by Using MS.NET Frmwk


1. You create components for Web-based client applications. You are creating a BankAccount class.
The BankAccount class contains an AccountNumber property and a CreateAccount method. The CreateAccount method is used to create a new account. The method generates a unique random value for the actNumber field.
You need to ensure that the BankAccount class is extendable, and that it serves as the base class for other derived classes. You also need to ensure that each derived class can have its own guidelines to generate account numbers in the CreateAccount method.
Which code segment should you use?
A. Public Class BankAccount
Protected actNumber As Long
Public ReadOnly Property AccountNumber() As Long
Get
Return actNumber
End Get
End Property
Public Overridable Function CreateAccount() As BankAccount
...
End Function
End Class
B. Public Class BankAccount
Private actNumber As Long
Public ReadOnly Property AccountNumber() As Long
Get
Return actNumber
End Get
End Property
Public Overridable Function CreateAccount() As BankAccount
...
End Function
End Class
C. Public Class BankAccount
Protected actNumber As Long
Public ReadOnly Property AccountNumber() As Long
Get
Return actNumber
End Get
End Property
Public Function CreateAccount() As BankAccount
...
End Function
End Class
D. Public Class BankAccount
Private actNumber As Long
Public ReadOnly Property AccountNumber() As Long
Get
Return actNumber
End Get
End Property
Public Function CreateAccount() As BankAccount
...
End Function
End Class
Answer: A

2. You create Web-based client applications. You create a component named Orders for a company named Northwind Traders.
This component is used to retrieve and update data in the Orders table of the company's database. The schema of the Orders table is as shown in the following Exhibit. (Click the Exhibit button.)
The Orders component permits the client application to perform the following tasks:
An instance of the Order class represents a single order that is identified by the OrderID parameter. An instance of the Order class permits the client application to perform the following tasks:
You need to create the design for the component.
What should you do?
To answer, drag the appropriate members to the correct locations in the member type column.
Answer:

3. You create Web-based client applications. You create a class library that is named Fabrikam.dll. Ten applications will use Fabrikam.dll.
Fabrikam.dll contains two classes that are named Order and OrderDetail. The class library must meet the following requirements:
You need to design the interface for the OrderDetail class.
Which code segment should you choose?
A. Public NotInheritable Class OrderDetail
Friend Sub New()
End Sub
End Class
B. Friend NotInheritable Class OrderDetail
Friend Sub New()
End Sub
End Class
C. Public NotInheritable Class OrderDetail
Public Sub New()
End Sub
End Class
D. Public NotInheritable Class OrderDetail
Private Sub New()
End Sub
End Class
Answer: A

4. You create Web-based client applications. You are creating a class named Product. The Product class will be used by a Web-based application to retrieve and modify product information.
When you create an instance of the Product class, you retrieve the current information from the Products table. The Product class contains a static member named CreateNewProduct. The CreateNewProduct method is used to add a new product to the database and return the primary key. The Products table contains the following fields:
You need to create the constructor for the Product class.
Which code segment should you use?
A. Public Sub New(ByVal ProductID As Integer, ByVal ProductName As String, ByVal Description As String, ByVal CategoryID As Integer, ByVal CurrentPrice As Decimal)
　'Insert code here
　End Sub
B. Public Sub New(ByVal ProductID As Integer, ByVal ProductName As String)
'Insert code here
End Sub
C. Public Sub New()
'Insert code here
End Sub
D. Public Sub New(ByVal ProductID As Integer)
'Insert code here
End Sub
Answer: D

5. You create Web-based applications. You are creating an Internet banking application. The application will be used by bank account holders.
You are creating a method to withdraw money from an account. The method must change the account balance according to one of the following rules:
You are translating the specification given here into pseudo code. You start by writing the following code.
You need to insert the correct pseudo code.
Which code segment should you insert?
A. If amount < balance then balance - = amount
If amount < balance + 500 then balance = balance - (amount + 35)
If amount > balance + 500 then throw exception
B. If amount <= balance then balance - = amount
If amount <= balance + 500 then balance = balance - (amount + 35)
If amount > balance + 500 then throw exception
C. If amount < balance then balance - = amount
Else If amount < balance + 500 then balance = balance - (amount + 35)
Else throw exception
D. If amount <= balance then balance - = amount
Else If amount <= balance + 500 then balance = balance - (amount + 35)
Else throw exception
Answer: D

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