Question 1

Which of the following statements is false

Accepted Answer

A)  Typically resource-release code should be placed in a finally block to ensure that a resource is released, regardless of whether there were exceptions when the resource was used in the corresponding try block. 
B)  The using statement simplifies writing code in which you obtain a resource, use the resource in a try block and release the resource in a corresponding finally block. 
C)  A file-processing app could process a file with a using statement to ensure that the file is closed properly when it's no longer needed. 
D)  The resource in a using statement must be an object that implements the IDiscardable interface. 
A)  Typically resource-release code should be placed in a finally block to ensure that a resource is released, regardless of whether there were exceptions when the resource was used in the corresponding try block. 
B)  The using statement simplifies writing code in which you obtain a resource, use the resource in a try block and release the resource in a corresponding finally block. 
C)  A file-processing app could process a file with a using statement to ensure that the file is closed properly when it's no longer needed. 
D)  The resource in a using statement must be an object that implements the IDiscardable interface.

Question 2

If a finally block appears after the last catch block,it is executed only if an ex
ception is thrown.

Accepted Answer

A) True 
 B)False

Question 3

The catch handler that catches an exception of type Exception should be

Accepted Answer

A)  last 
B)  anywhere 
C)  first 
D)  a catch handler that catches an exception of type Exception should not be used 
A)  last 
B)  anywhere 
C)  first 
D)  a catch handler that catches an exception of type Exception should not be used

Question 4

In many cases,handling an exception allows a program to automatically restart execution of the program from the beginning.

Accepted Answer

A) True 
 B)False

Question 5

A NullReferenceException is thrown when there's an attempt to use a reference that points to nothing.

Accepted Answer

A) True 
 B)False

Question 6

All exceptions cause the program to terminate when thrown.

Accepted Answer

A) True 
 B)False

Question 7

The process that attempts to locate an appropriate catch handler for an uncaught exception is known as:

Accepted Answer

A)  laddering 
B)  stack winding 
C)  stack unwinding 
D)  stack traversing 
A)  laddering 
B)  stack winding 
C)  stack unwinding 
D)  stack traversing

Question 8

A catch block can use a concise notation to catch exceptions related by inheritance.

Accepted Answer

A) True 
 B)False

Question 9

In the catch block below,what is e ?
catch (DivideByZeroException e) 
   { 
      Console.WriteLine(e); 
   }

Accepted Answer

A)  The type of the exception being caught 
B)  The name of catch block's exception parameter 
C)  A finally block 
D)  An exception handler 
A)  The type of the exception being caught 
B)  The name of catch block's exception parameter 
C)  A finally block 
D)  An exception handler

Question 10

The finally block is executed only if no error was reached in the try block.

Accepted Answer

A) True 
 B)False

Question 11

If an exception is thrown in a catch handler,any code in the handler that follows the thrown exception will:

Accepted Answer

A)  generate a syntax error 
B)  generate a logic error 
C)  never be executed 
D)  run after the finally block is done 
A)  generate a syntax error 
B)  generate a logic error 
C)  never be executed 
D)  run after the finally block is done

Question 12

Which of the following statements is false

Accepted Answer

A)  A finally block, if there is one, is placed after the last catch block. 
B)  A finally block should release all resources acquired in the corresponding try block. 
C)  The finally block and try block can appear in any order. 
D)  A finally block is optional. 
A)  A finally block, if there is one, is placed after the last catch block. 
B)  A finally block should release all resources acquired in the corresponding try block. 
C)  The finally block and try block can appear in any order. 
D)  A finally block is optional.

Question 13

User-created exceptions can be created by:

Accepted Answer

A)  overriding the Error class. 
B)  overriding the Exception property. 
C)  extending class Exception. 
D)  they cannot be created 
A)  overriding the Error class. 
B)  overriding the Exception property. 
C)  extending class Exception. 
D)  they cannot be created

Question 14

C# throws an IntegerArithmeticException when division by zero in integer arithmetic occurs.

Accepted Answer

A) True 
 B)False

Question 15

What's the difference between a try block and a try statement

Accepted Answer

A)  There is no difference; the terms can be used interchangeably. 
B)  A try statement refers to the block of code following the keyword try, while the try block refers to the try keyword and the block of code following this keyword. 
C)  The try block refers to the keyword try followed by a block of code. The try block and its corresponding catch and/or finally clauses together form a try statement. 
D)  The try statement refers to the keyword try followed by a block of code. The try statement and its corresponding catch and/or finally clauses together form a try block. 
A)  There is no difference; the terms can be used interchangeably. 
B)  A try statement refers to the block of code following the keyword try, while the try block refers to the try keyword and the block of code following this keyword. 
C)  The try block refers to the keyword try followed by a block of code. The try block and its corresponding catch and/or finally clauses together form a try statement. 
D)  The try statement refers to the keyword try followed by a block of code. The try statement and its corresponding catch and/or finally clauses together form a try block.

Question 16

There can be no code in between try/catch/finally blocks.

Accepted Answer

A) True 
 B)False

Question 17

User-defined exceptions should be derived from the:

Accepted Answer

A)  ApplicationException class. 
B)  ConsoleException class. 
C)  Exception class. 
D)  SystemException class. 
A)  ApplicationException class. 
B)  ConsoleException class. 
C)  Exception class. 
D)  SystemException class.

Question 18

A catch block that does not specify an exception type or an identifier ____________.

Accepted Answer

A) is an error 
B)  cannot catch any exceptions 
C)  can catch any exceptions 
D)  None of the above 
A) is an error 
B)  cannot catch any exceptions 
C)  can catch any exceptions 
D)  None of the above

Exam 13: Exception Handling: A Deeper Look

Which of the following statements is false

If a finally block appears after the last catch block,it is executed only if an ex ception is thrown.

The catch handler that catches an exception of type Exception should be

In many cases,handling an exception allows a program to automatically restart execution of the program from the beginning.

A NullReferenceException is thrown when there's an attempt to use a reference that points to nothing.

All exceptions cause the program to terminate when thrown.

The process that attempts to locate an appropriate catch handler for an uncaught exception is known as:

A catch block can use a concise notation to catch exceptions related by inheritance.

In the catch block below,what is e ? catch (DivideByZeroException e) { Console.WriteLine(e); }

The finally block is executed only if no error was reached in the try block.

If an exception is thrown in a catch handler,any code in the handler that follows the thrown exception will:

Which of the following statements is false

User-created exceptions can be created by:

C# throws an IntegerArithmeticException when division by zero in integer arithmetic occurs.

What's the difference between a try block and a try statement

There can be no code in between try/catch/finally blocks.

User-defined exceptions should be derived from the:

A catch block that does not specify an exception type or an identifier ____________.

Introduction to Computers, the Internet and Visual C#

Dive Into Visual Studio Community

Introduction to C# Apps

Introduction to Classes,Objects,Methods and Strings

Control Statements: Part 1

Control Statements: Part 2

Methods: a Deeper Look

Arrays;Introduction to Exception Handling

Introduction to Linq and Generic Collections

Classes and Objects: A Deeper Look

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

GUI With Windows Forms: Part 1

GUI With Windows Forms: Part 2

Strings,Characters and Regular Expressions

Files and Streams

Searching and Sorting

Data Structures

Generics

Collections

Databases and LING

Asynchronous Programming With Async and Await

XML

GUI With Windows Presentation Foundation

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