You are developing an application that uses structured exception handling. The application includes
a class named Logger. The Logger class implements a method named Log by using the following code
segment:
public static void Log(Exception ex) { }
You have the following requirements:
Log all exceptions by using the Log() method of the Logger class.
Rethrow the original exception, including the entire exception stack.
You need to meet the requirements. Which code segment should you use?

DRAG DROP
You are developing an application that implements a set of custom exception types. You declare the
custom exception types by using the following code segments:

The application includes a function named DoWork that throws .NET Framework exceptions and
custom exceptions. The application contains only the following logging methods:

The application must meet the following requirements:
When ContosoValidationException exceptions are caught, log the information by using the static
void Log (ContosoValidationException ex) method.
When ContosoDbException or other ContosoException exceptions are caught, log the information by
using the static void Log(ContosoException ex) method.
You need to meet the requirements.
How should you complete the relevant code? (To answer, drag the appropriate code segments to
the correct locations in the answer are
a. Each code segment may be used once, more than once, or not at all. You may need to drag the
split bar between panes or scroll to view content.)

You are developing an application that includes a class named BookTracker for tracking library
books. The application includes the following code segment. (Line numbers are included for
reference only.)

You need to add a book to the BookTracker instance.
What should you do?

DRAG DROP
You are developing an application that will include a method named GetDat
a. The GetData() method will retrieve several lines of data from a web service by using a
System.IO.StreamReader object.
You have the following requirements:
The GetData() method must return a string value that contains the entire response from the web
service.
The application must remain responsive while the GetData() method runs.
You need to implement the GetData() method.
How should you complete the relevant code? (To answer, drag the appropriate objects to the
correct locations in the answer area. Each object may be used once, more than once, or not at all.
You may need to drag the split bar between panes or scroll to view content.)

You use the Task.Run() method to launch a long-running data processing operation. The data
processing operation often fails in times of heavy network congestion.

If the data processing operation fails, a second operation must clean up any results of the first
operation.
You need to ensure that the second operation is invoked only if the data processing operation
throws an unhandled exception.
What should you do?

You are developing an application that uses the Microsoft ADO.NET Entity Framework to retrieve
order information from a Microsoft SQL Server database. The application includes the following
code. (Line numbers are included for reference only.)

The application must meet the following requirements:
Return only orders that have an OrderDate value other than null.
Return only orders that were placed in the year specified in the year parameter.
You need to ensure that the application meets the requirements. Which code segment should you
insert at line 08?

You are creating an application that manages information about your company’s products. The
application includes a class named Product and a method named Save.
The Save() method must be strongly typed. It must allow only types inherited from the Product class
that use a constructor that accepts no parameters.
You need to implement the Save() method.
Which code segment should you use?

You are creating a class named Employee. The class exposes a string property named EmployeeType.
The following code segment defines the Employee class. (Line numbers are included for reference
only.)

The EmployeeType property value must meet the following requirements:
The value must be accessed only by code within the Employee class or within a class derived from
the Employee class.
The value must be modified only by code within the Employee class.
You need to ensure that the implementation of the EmployeeType property meets the
requirements.
Which two actions should you perform? (Each correct answer represents part of the complete
solution. Choose two.)

You are developing an application. The application calls a method that returns an array of integers
named customerIds. You define an integer variable named customerIdToRemove and assign a value
to it. You declare an array named filteredCustomerIds.
You have the following requirements.
Remove duplicate integers from the customerIds array.
Sort the array in order from the highest value to the lowest value.
Remove the integer value stored in the customerIdToRemove variable from the customerIds array.
You need to create a LINQ query to meet the requirements.
Which code segment should you use?

DRAG DROP
You are developing an application by using C#. The application will process several objects per
second.
You need to create a performance counter to analyze the object processing.
Which three actions should you perform in sequence? (To answer, move the appropriate actions
from the list of actions to the answer area and arrange them in the correct order.)