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Exam : Microsoft 70-540
Title : TS:Microsoft Windows Mobile Application Development


1. You are creating a Microsoft Windows Mobilebased application. You are required to create custom data types that derive from a system type.
The system type must satisfy the following requirements:
Ensure the type safety of collections during compilation.
Improve the code readability of the application.
Minimize the potential for run-time errors.
You need to identify the system type that meets the outlined requirements.
Which system type should you choose?
A. Delegate type
B. Nullable type
C. Generic type
D. Value type
Answer: C

2. You are creating a Microsoft Windows Mobilebased application.
The application uses a custom exception class named MyException that transmits stack information. The MyException class is derived from the Exception class. The application contains a method named ThrowException.
You write the following code segment.
try { ThrowException(); }
The ThrowException method throws an exception of type MyException.
You need to rethrow the exception. You also need to preserve the stack information of previous exceptions.
Which code segment should you use?
A. catch ( MyException ex) {
throw new Exception( ex.Message );
}
B. finally {
throw new MyException();
}
C. catch {
throw;
}
D. catch (Exception ex) {
throw ex;
}
Answer: C

3. You are creating a Microsoft Windows Mobilebased application.
The application stores real-time order information for small businesses. The number of orders ranges from a minimum of 0 to a maximum of 5000.
You need to ensure that the application achieves optimum performance for any number of orders within the specified range.
Which class should you choose?
A. OrderedDictionary
B. HybridDictionary
C. ListDictionary
D. Hashtable
Answer: B

4. You are creating a Microsoft Windows Mobilebased application.
You create a class named InventoryManager. The InventoryManager class uses events to alert subscribers about changes in inventory levels.
You need to create delegates in the InventoryManager class to raise events to subscribers.
Which code segment should you use?
A. public event InventoryChangeEventHandler OnInventoryChange;
　public delegate void InventoryChangeEventHandler (object source, EventArgs e);
B. private event InventoryChangeEventHandler OnInventoryChange;
　private delegate void InventoryChangeEventHandler (object source, EventArgs e);
C. public event EventHandler OnInventoryChange;
public void InventoryChangeHandler(object source, EventArgs e) {
this.OnInventoryChange();
}
D. private event EventHandler OnInventoryChange;
private void InventoryChangeHandler(object source, EventArgs e) {
this.OnInventoryChange();
}
Answer: A

5. You are creating a Microsoft Windows Mobilebased inventory application.
The application must create reports that display inventory part numbers.
You need to write a method named WritePart that displays the part numbers in the following format:
A minimum of three digits to the left of the decimal point
Exactly two digits to the right of the decimal point
Left-aligned output
Which code segment should you use?
A. public static void WritePart(IFormattable t, CultureInfo ci) {
Console.WriteLine
("{0,-30}{1,30}", "Part:", t.ToString("000.00", ci));
}
B. public static void WritePart(IFormattable t, CultureInfo ci) {
Console.WriteLine
("{0,-30}{1,30}", "Part:", t.ToString("000.##", ci));
}
C. public static void WritePart(IFormattable t, CultureInfo ci) {
Console.WriteLine
("{0,30}{1,30}", "Part:", t.ToString("###.##", ci));
}
D. public static void WritePart(IFormattable t, CultureInfo ci) {
Console.WriteLine
("{0,30}{1,30}", "Part:", t.ToString("###.00", ci));
}
Answer: A