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Q1. You are creating a new class named Polygon. You write the following code:
class Polygon : IComparable
{
public double Length { get; set; }
public double Width { get; set; }
public double GetArea()
{
return Length * Width;
}
public int CompareTo(object obj)
{
// to be completed
}
}
You need to complete the definition of the CompareTo method to enable comparison of the Polygon objects.
Which of the following code segments should you use?
A. public int CompareTo(object obj)
{
Polygon target = (Polygon)obj;
double diff = this.GetArea() - target.GetArea();
if (diff == 0)
return 0;
else if (diff > 0)
return 1;
else return -1;
}
B. public int CompareTo(object obj)
{
Polygon target = (Polygon)obj;
double diff = this.GetArea() - target.GetArea();
if (diff == 0)
return 1;
else if (diff > 0)
return -1;
else return 0;
}
C. public int CompareTo(object obj)
{
Polygon target = (Polygon)obj;
if (this == target)
return 0;
else if (this > target)
return 1;
else return -1; }
D. public int CompareTo(object obj)
{
Polygon target = (Polygon)obj;
if (this == target)
return 1;
else if (this > target)
return -1;
else return 0;
}
Answer: A
Q2. You write large amount of JavaScript code for your Web site. You need to take advantage of caching techniques to make sure that Web pages load as quickly as possible. You also need to ensure that you can modify the JavaScript code with the least amount of effort. What should you do?
A. Write JavaScript code inside the <SCRIPT> tag. Include the <SCRIPT> within the <HEAD> tag of theHTML page.
B. Write JavaScript code inside the <SCRIPT> tag. Include the <SCRIPT> within the <BODY> tag of theHTML page.
C. Write JavaScript code inside a separate file. Use the SRC attribute of the <SCRIPT> tag to link to theJavaScript file.
D. Write JavaScript code inside a separate file. Use the HREF attribute of the <LINK> tag to link to theJavaScript file.
Answer: C
Q3. You need to start a Windows service named ProcService from the command line. Which command should you use?
A. net start ProcService
B. net pause ProcService
C. net continue ProcService
D. net stop ProcService
Answer: A
Q4. You are writing a C# program that iterates through a collection such as arrays and lists. You need to make sure that you process each item in the collection once. You also need to ensure that your code is easy to read and debug. Which of the following C# statements provide the best solution for this requirement?
A. while
B. for
C. foreach
D. do-while
Answer: C
Q5. You need to develop a C# program that exports the contents of the Customers table to an XML file. The exported data must be in the following format:
<Customer CustomerID="ALFKI" ContactName="Maria Anders" Phone="030-007-4321" />
<Customer CustomerID="ANATR" ContactName="Ana Trujillo" Phone="(5) 555-4729" />
Which of the following code segments should you use to export the Customers table to the specified XML format?
A. foreach(DataColumn c in dataset1.tables["Customers"].Columns)
{
B. ColumnMapping = MappingType.Attribute;
}
dataSet1.WriteXml("Customers.xml");
C. foreach(DataColumn c in dataset1.tables["Customers"].Columns)
{
D. ColumnMapping = MappingType.Element;
}
dataSet1.WriteXml("Customers.xml");
E. foreach(DataColumn c in dataset1.tables["Customers"].Columns)
{
F. ColumnMapping = MappingType.Attribute;
}
dataSet1.WriteXml("Customers.xml", XmlWriteMode.WriteSchema);
G. foreach(DataColumn c in dataset1.tables["Customers"].Columns)
{
H. ColumnMapping = MappingType.Element;
}
dataSet1.WriteXml("Customers.xml", XmlWriteMode.WriteSchema);
Answer: A
Q6. Which of the following presses is responsible for providing the ASP.NET functionality?
A. inetinfo.exe
B. iexplorer.exe
C. aspnet_isapi.dll
D. aspnet_wp.exe
Answer: D
Q7. You are developing a sorting algorithm that uses partitioning and comparison to arrange an array of numbers in the correct order. You write a method that partitions the array so that the items less than pivot go to the left side, whereas the items greater than pivot go to the right side. The partitioning method has the following signature:
static int Partition (int[] numbers, int left,
int right, int pivotIndex) Which of the following algorithms should you use to sort the array using the Partition method?
A. static int[] QuickSort(int[] numbers,
int left, int right)
{
if (right > left)
{
int pivotIndex = left + (right - left) / 2;
pivotIndex = Partition(
numbers, left, right, pivotIndex);
QuickSort(
numbers, left, pivotIndex - 1);
QuickSort(
numbers, pivotIndex + 1, right);
}
return numbers;
}
B. static int[] QuickSort(int[] numbers,
int left, int right)
{
if (right > left)
{
int pivotIndex = left + (right - left) / 2;
pivotIndex = Partition(
numbers, left, right, pivotIndex);
QuickSort(
numbers, left, pivotIndex);
QuickSort(
numbers, pivotIndex + 1, right);
}
return numbers;
}
C. static int[] QuickSort(int[] numbers,
int left, int right)
{
if (right > left)
{
int pivotIndex = left + (right - left) / 2;
pivotIndex = Partition(
numbers, left, right, pivotIndex);
QuickSort(
numbers, left, pivotIndex - 1);
QuickSort(
numbers, pivotIndex, right);
} return numbers; }
D. static int[] QuickSort(int[] numbers,
int left, int right)
{
if (right > left)
{
int pivotIndex = left + (right - left) / 2;
pivotIndex = Partition(
numbers, left, right, pivotIndex);
QuickSort(
numbers, left, pivotIndex + 1);
QuickSort(
numbers, pivotIndex + 1, right);
}
return numbers;
}
Answer: A
Q8. Your application connects to a SQL Server database that contains a table called Employees with the following columns:
EmployeeID (int, identity)
EmployeeType (char(1))
EmployeeDate (datetime)
You need to write a query that selects all rows from the table where the EmployeeType value is either C or T.
Which statement should you use?
A. SELECT * FROM Employees
WHERE EmployeeType LIKE ‘[CT]’
B. SELECT * FROM Employees
WHERE EmployeeType LIKE ‘[C-T]’
C. SELECT * FROM Employees
WHERE EmployeeType LIKE ‘C’ OR ‘T’
D. SELECT FROM Employees
WHERE EmployeeType IN (‘C’, ‘T’)
Answer: A
Q9. You need to update the Products table and remove all discontinued products. When the products are discontinued, the value of the field Discontinued is set to true. Which of the following SQL statements should you use to make changes to the Products table?
A. INSERT
B. SELECT
C. UPDATE
D. DELETE
Answer: D
Q10. You are developing a new application that optimizes the processing of a manufacturing plant’s operations. You need to implement a data structure that works as a “buffer” for overflow capacity. When the manufacturing capacity is available, the items in the buffer need to be processed in the order in which they were added to the buffer. Which data structure should you use to implement such buffer?
A. array
B. linked list
C. stack
D. queue
Answer: D
