Program Control

Question 1

Which property of the DbException class identifies
the data provider?

Answer 1

the Source property

Question 2

Which method is used to stop a running thread for an

amount of time?

Answer 2

the Sleep method

Question 3

Which delegate should you use when instantiating a

Thread object whose method takes no arguments?

Answer 3

the ThreadStart delegate

Question 4

Which method is used to run a thread?

Answer 4

the Start method

Question 5

Which delegate should you use when instantiating a

Thread object whose method takes argument(s)?

Answer 5

the ParameterizedThreadStart delegate

Question 6

What is the syntax for instantiating a Thread object to

run a specified method?

Answer 6

Thread [name] = new Thread

([targetMethod]);

Question 7

Which class allows you to easily manage multiple
threads within an application domain?

Answer 7

the ThreadPool class

Question 8

Which property of the IAsyncResult interface

indicates an asynchronous operation has ended?

Answer 8

the IsCompleted property

Question 9

What is an exception?

Answer 9

An exception is an abnormal condition at runtime

resulting from an error or unexpected operation.

Question 10

From which class should you inherit to implement a
custom exception?

Answer 10

the Exception class

Question 11

Which property of the Thread class is used to set or
retrieve the current user for an application in rolebased security?

Answer 11

the CurrentPrincipal property

Question 12

Which property of the ServiceSecurityAuditBehavior
class sets whether logging failures will throw an
exception?

Answer 12

the SuppressAuditFailure property

Question 13

Which property of the DbException class provides the
vendor-specific error message?

Answer 13

the Message property

Question 14

What is the syntax used to declare a delegate?

Answer 14

public delegate [void|return] [name]

([args]);

Question 15

What does the ThreadState enumeration indicate?

Answer 15

the current execution state of the thread, whether it

has been started, is running, or is suspended

Question 16

Which method should you invoke on the ThreadPool
class to add a delegate?

Answer 16

the QueueUserWorkItem method

Question 17

Which delegate should you use for callbacks from the

ThreadPool class?

Answer 17

the WaitCallback delegate

Question 18

Which property of the Process class returns all
libraries loaded by the current process?

Answer 18

the Modules property

Question 19

Which class should you use to generate an
application-specific exception?

Answer 19

the ApplicationException class

Question 20

Which exception class represents a concurrency
violation during database update operations and is
thrown if the number of rows affected by each
INSERT, UPDATE, or DELETE command is zero?

Answer 20

the DbConcurrencyException exception

Question 21

When an exception type SqlException is caught, how
do you determine the error that was encountered in
SQL Server?

Answer 21

Iterate over the Errors collection of the SqlException

object

Question 22

How do you invoke the method(s) to which a delegate

references?

Answer 22

Invoke the Invoke method, specifying the arguments

required by the delegate.