You are implementing a method named FloorTemperature that performs conversions between value
types and reference types. The following code segment implements the method. (Line numbers are
included for reference only.)

You need to ensure that the application does not throw exceptions on invalid conversions.
Which code segment should you insert at line 04?

You are developing an application by using C#.
The application includes an object that performs a long running process.
You need to ensure that the garbage collector does not release the object’s resources until the
process completes.
Which garbage collector method should you use?

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 by using C#. You provide a public key to the development team
during development.
You need to specify that the assembly is not fully signed when it is built.
Which two assembly attributes should you include in the source code? (Each correct answer
presents part of the solution. Choose two.)

You are developing an application that will transmit large amounts of data between a client
computer and a server. You need to ensure the validity of the data by using a cryptographic hashing
algorithm. Which algorithm should you use?

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?