HOTSPOT
You define a class by using the following code:

To answer, complete each statement according to the information presented in the code.
Hot Area:

You are implementing a method named GetValidEmailAddresses. The GetValidEmailAddresses() method
processes a list of string values that represent email addresses.
The GetValidEmailAddresses() method must return only email addresses that are in a valid format.
You need to implement the GetValidEmailAddresses() method.
Which two code segments can you use to achieve this goal? (Each correct answer presents a complete
solution. Choose two.)

You are modifying an existing banking application.
The application includes an Account class and a Customer class. The following code segment defines the
classes.

You populate a collection named customerCollection with Customer and Account objects by using the following
code segment:

You create a largeCustomerAccounts collection to store the Account objects by using the following code
segment:Collection<Account> largeCustomerAccounts = new Collection<Account> ();
All accounts with a Balance value greater than or equal to 1,000,000 must be tracked.
You need to populate the largeCustomerAccounts collection with Account objects.
Which code segment should you use?

You are developing an application that produces an executable named MyApp.exe and an assembly named
MyApp.dll.
The application will be sold to several customers.
You need to ensure that enough debugging information is available for MyApp.exe, so that if the application
throws an error in a customer’s environment, you can debug the error in your own development environment.
What should you do?

You are developing a class named EmployeeRoster. The following code implements the EmployeeRoster
class. (Line numbers are included for reference only.)

You create the following unit test method to test the EmployeeRoster class implementation:

You need to ensure that the unit test will pass.
What should you do?

You have an application that will send confidential information to a Web server.
You need to ensure that the data is encrypted when it is sent across the network.
Which class should you use?

You are developing a game that allows players to collect from 0 through 1000 coins. You are creating a method
that will be used in the game. The method includes the following code. (Line numbers are included for
reference only.)
01 public string FormatCoins(string name, int coins)
02 {
03
04 }
The method must meet the following requirements:
Return a string that includes the player name and the number of coins.
Display the number of coins without leading zeros if the number is 1 or greater.
Display the number of coins as a single 0 if the number is 0.
You need to ensure that the method meets the requirements.
Which code segment should you insert at line 03?

You are developing an application that retrieves patient data from a web service. The application stores the
JSON messages returned from the web service in a string variable named PatientAsJson. The variable is
encoded as UTF-8. The application includes a class named Patient that is defined by the following code:

You need to populate the Patient class with the data returned from the web service.
Which code segment should you use?

An application is throwing unhandled NullReferenceException and FormatException errors. The stack trace
shows that the exceptions occur in the GetWebResult() method.The application includes the following code to parse XML data retrieved from a web service.
(Line numbers are included for reference only.)

You need to handle the exceptions without interfering with the existing error-handling infrastructure.
Which two actions should you perform? (Each correct answer presents part of the solution.
Choose two.)

You need to store the values in a collection.
The solution must meet the following requirements:
The values must be stored in the order that they were added to the collection.
The values must be accessed in a first-in, first-out order.
Which type of collection should you use?