70-548VB Exam

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Exam : Microsoft 70-548(VB)
Title : PRO:Design & Develop Wdws-Based Appl by Using MS.NET Frmwk


1. You create Microsoft Windows-based applications. You are creating a method. Your applications will call the method multiple times. You write the following lines of code for the method.
The method generates performance issues.
You need to minimize the performance issues that the multiple string concatenations generate.
What should you do?
A. Use a single complex string concatenation.
B. Use an array of strings.
C. Use an ArrayList object.
D. Use a StringBuilder object.
Answer: D

2. You create Microsoft Windows-based applications. You create a banking application that will be used by the account managers of the bank.
You identify a method to simulate the deposit functionality of a savings account. The method will calculate the final balance when monthly deposit, number of months, and quarterly rate are given. The application requirements state that the following criteria must be used to calculate the balance amount:
You translate the outlined specification into pseudo code. You write the following lines of code. (Line numbers are included for reference only.)
You need to insert the appropriate code in line 02.
Which code segment should you insert?
A. 01 Declare integer variable, x
02 For x=1 to months/3
2.1 balance = balance + 3 * monthlyPayment
2.2 balance = (1 + quarterlyRate) * balance
B. 01 Declare integer variable, x
02 For x=1 to months/3
2.1 balance = balance + 2 * monthlyPayment
2.2 balance = (1 + quarterlyRate) * balance
2.3 balance = balance + monthlyPayment
C. 01 Declare integer variable, x
02 For x=1 to months
2.1 balance = balance + monthlyPayment
2.2 if x Mod 3 is 0 then balance = (1 + quarterlyRate) * balance
D. 01 Declare integer variable, x
02 For x=1 to months
2.1 if x Mod 3 is 0 then balance = (1 + quarterlyRate) * balance
2.2 balance = balance + monthlyPayment
Answer: D

3. You create Microsoft Windows-based applications. You are designing an inventory management solution for a warehouse. The solution must address the following requirements:
You need to develop the data handling capabilities of the solution to meet the requirements.
Which three data handling mechanisms should you select? (Each correct answer presents part of the solution. Choose three.)
A. Use an XmlReader object to retrieve inventory data from the database and populate a DataSet object.
B. Use a DataAdapter object to retrieve inventory data from the database and populate a DataSet object.
C. Use methods from the DataSet class to generate a new XML file that contains data to be used to generate a purchase order.
D. Use methods from the DataSet class to generate a new XmlDataDocument object that contains data to be used to generate a purchase order.
E. Use an XslCompiledTransform object to generate the purchase order XML file.
F. Use an XmlWriter object to generate the purchase order XML file.
Answer: B AND D AND E

4. 1 balance = balance + 3 * monthlyPayment
2.2 balance = (1 + quarterlyRate) * balance
B. 01 Declare integer variable, x
02 For x=1 to months/3
2.1 balance = balance + 2 * monthlyPayment
2.2 balance = (1 + quarterlyRate) * balance
2.3 balance = balance + monthlyPayment
C. 01 Declare integer variable, x
02 For x=1 to months
2.1 balance = balance + monthlyPayment
2.2 if x Mod 3 is 0 then balance = (1 + quarterlyRate) * balance
D. 01 Declare integer variable, x
02 For x=1 to months
2.1 if x Mod 3 is 0 then balance = (1 + quarterlyRate) * balance
2.2 balance = balance + monthlyPayment
Answer: D

5. You create Microsoft Windows-based applications. You create an application that accesses data on a Microsoft SQL Server 2005 database. You write the following code segment. (Line numbers are included for reference only.)
The cn variable points to a SqlConnection object. The SqlConnection object will be opened almost every time this code segment executes.
You need to complete this code segment to ensure that the application continues to run even if the SqlConnection object is open. You also need to ensure that the performance remains unaffected.
What should you do?
A. Add a Try block on line 02 along with a matching Catch block beginning on line 07 to handle the possible exception.
B. Add a Try block on line 02 along with a matching Finally block beginning on line 07 to handle the possible exception.
C. Replace line 03 with the following code.
If Not (cn.State = ConnectionState.Open) Then
cn.Open()
End If
D. Replace line 03 with the following code.
If Not (cn.State = ConnectionState.Closed) Then
cn.Open()
End If
Answer: C