Basic, Microsoft .NET Framework

Question: Which of the following are examples of built-in generic types? (Choose all that apply.) - VB.NET
A
Nullable

B
Boolean

C
EventHandler

D
System.Drawing.Point

Note: Not available
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Question: You create a generic class in which you store field members whose type is generic. What do you do to dispose of the objects stored in the fields? - VB.NET
A
Call the Object.Dispose method.

B
Implement the IDisposable interface.

C
Derive the generic class from the IDisposable class.

D
Use constraints to require the generic type to implement the IDisposable interface.

Note: Not available
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Question: You’ve implemented an event delegate from a class, but when you try to attach an event procedure you get a compiler error that there is no overload that matches the delegate. What happened? - VB.NET
A
The signature of the event procedure doesn’t match that defined by the delegate.

B
The event procedure is declared Shared/static, but it should be an instance member instead.

C
You mistyped the event procedure name when attaching it to the delegate.

D
The class was created in a different language.

Note: Not available
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Question: You are creating a class that needs to be sorted when in a collection. Which interface should you implement? - VB-NET
A
IEquatable

B
IFormattable

C
IDisposable

D
IComparable

Note: Not available
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Question: Why should boxing be avoided? - VB.NET
A
It adds overhead.

B
Users must have administrative privileges to run the application.

C
It makes code less readable.

Note: Not available
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Question: Structures inherit ToString from System.Object. Why would someone override that method within a structure? (Choose all that apply.) - VB.NET
A
To avoid boxing

B
To return something other than the type name

C
The compiler requires structures to override the ToString method

D
To avoid run-time errors caused by invalid string conversions

Note: Not available
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Question: If there is no valid conversion between two types, what should you do when implementing the IConvertible interface? - VB.NET
A
Delete the ToType member that performs the conversion.

B
Throw an InvalidCastException.

C
Throw a new custom exception reporting the error.

D
Leave the member body empty.

Note: Not available
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Question: With strict conversions enabled, which of the following would allow an implicit conversion? (Choose all that apply.) - VB.NET
A
Int16 to Int32

B
Int32 to Int16

C
Int16 to double

D
A double to Int16

Note: Not available
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Question: You need to retrieve a list of subdirectories. Which class should you use? - VB.NET
A
FileInfo

B
DriveInfo

C
FileSystemWatcher

D
DirectoryInfo

Note: Not available
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Question: Which of the following types of changes CANNOT be detected by an instance of FileSystemWatcher? - VB.NET
A
A text file that is appended

B
A USB flash drive connected to the computer

C
A directory added to the root of the C:\ drive

D
A file that is renamed

Note: Not available
1. Report

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Question: Which of the following are examples of built-in generic types? (Choose all that apply.) - VB.NET

Question: You create a generic class in which you store field members whose type is generic. What do you do to dispose of the objects stored in the fields? - VB.NET

Question: You’ve implemented an event delegate from a class, but when you try to attach an event procedure you get a compiler error that there is no overload that matches the delegate. What happened? - VB.NET

Question: You are creating a class that needs to be sorted when in a collection. Which interface should you implement? - VB-NET

Question: Why should boxing be avoided? - VB.NET

Question: Structures inherit ToString from System.Object. Why would someone override that method within a structure? (Choose all that apply.) - VB.NET

Question: If there is no valid conversion between two types, what should you do when implementing the IConvertible interface? - VB.NET

Question: With strict conversions enabled, which of the following would allow an implicit conversion? (Choose all that apply.) - VB.NET

Question: You need to retrieve a list of subdirectories. Which class should you use? - VB.NET

Question: Which of the following types of changes CANNOT be detected by an instance of FileSystemWatcher? - VB.NET