You are modifying an existing application that manages employee payroll. The application
includes a class named PayrollProcessor. The PayrollProcessor class connects to a payroll
database and processes batches of paychecks once a week.
You need to ensure that the PayrollProcessor class supports iteration and releases
database connections after the batch processing completes.
Which two interfaces should you implement? (Each correct answer presents part of the
complete solution. Choose two.)

You are developing an application that will read data from a text file and display the file contents.
You need to read data from the file, display it, and correctly release the file resources.
Which code segment should you use?

DRAG DROP
You are creating a method that saves information to a database.
You have a static class named LogHelper. LogHelper has a method named Log to log the
exception.
You need to use the LogHelper Log method to log the exception raised by the database
server. The solution must ensure that the exception can be caught by the calling method,
while preserving the original stack trace.
How should you write the catch block? (Develop the solution by selecting and ordering the
required code snippets. You may not need all of the code snippets.)

HOTSPOT
You have the following code:

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

HOTSPOT
You are building a data access layer in an application that contains the following code:

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

HOTSPOT
You have the following code:

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

HOTSPOT
You have the following code (line numbers are included for reference only):

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

You need to create a method that can be called by using a varying number of parameters.
What should you use?

You are developing an application.
The application contains the following code segment (line numbers are included for
reference only):

When you run the code, you receive the following error message: “Cannot implicitly convert
type ‘object” to ‘inf. An explicit conversion exists (are you missing a cast?).”
You need to ensure that the code can be compiled.
Which code should you use to replace line 05?

You have the following code (line numbers are included for reference only):

You need to ensure that if an exception occurs, the exception will be logged.
Which code should you insert at line 28?