You are developing an application that includes a class named Customer and a generic list of
customers. The following code segment declares the list of customers:
List<Customer> customersList = new List<Customer> () ;
You populate the customersList object with several hundred Customer objects.
The application must display the data for five Customer objects at a time.
You need to create a method that will return the correct number of Customer objects.
Which code segment should you use?

You are developing an application that will use multiple asynchronous tasks to optimize
performance.
You create three tasks by using the following code segment. (Line numbers are included for
reference only.)

You need to ensure that the ProcessTasks() method waits until all three tasks complete before
continuing.
Which code segment should you insert at line 09?

You are developing a C# application. The application includes the following code segment, (Line
numbers are included for reference only.)

The application fails at line 17 with the following error message: “An item with the same key has
already been added.”
You need to resolve the error.
Which code segment should you insert at line 16?

You are developing an application by using C#. The application includes a method named
SendMessage. The SendMessage() method requires a string input.
You need to replace “Hello” with “Goodbye” in the parameter that is passed to the SendMessage()
method.
Which two code segments can you use to achieve this goal? (Each correct answer presents a
complete solution. Choose two.)

You are developing an application that includes the following code segment:

You need to implement both Start() methods in a derived class named UseStart that uses the Start()
method of each interface.
Which two code segments should you use? (Each correct answer presents part of the solution.
Choose two.)

You need to write a console application that meets the following requirements:
If the application is compiled in Debug mode, the console output must display Entering debug mode.
If the application is compiled in Release mode, the console output must display Entering release
mode.
Which code should you use?

You are developing an application by using C#. The application will write events to an event log. You
plan to deploy the application to a server.
You create an event source named AppSource and a custom log named AppLog on the server.
You need to write events to the custom log.
Which code segment should you use?

DRAG DROP
You are developing a C# application. The application includes a class named Rate. The following code
segment implements the Rate class:

You define a collection of rates named rateCollection by using the following code segment:
Collection<Rate> rateCollection = new Collection<Rate>() ;
The application receives an XML file that contains rate information in the following format:

You need to parse the XML file and populate the rateCollection collection with Rate objects.
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.)

DRAG DROP
You are developing an application that will write string values to a file. The application includes the
following code segment. (Line numbers are included for reference only.)
01 protected void ProcessFile(string fileName, string value)
02 {
03
04 }
You need to ensure that the ProcessFile() method will write string values to a file.
Which four code segments should you insert in sequence at line 03? (To answer, move the
appropriate code segments from the list of code segments to the answer area and arrange them in
the correct order.)

You are implementing a method named ProcessFile that retrieves data files from web servers and
FTP servers. The ProcessFile () method has the following method signature:
Public void ProcessFile(Guid dataFileld, string dataFileUri)
Each time the ProcessFile() method is called, it must retrieve a unique data file and then save the
data file to disk.
You need to complete the implementation of the ProcessFile() method. Which code segment should
you use?