Veröffentlicht: 12. Oktober 2012
Sprachen: Englisch, Chinesisch (vereinfacht), Französisch, Deutsch, Japanisch, Portugiesisch (Brasilien)
Zielgruppen: Entwickler
Technologie: Visual Studio 2012
Anrechnung für Zertifizierung: MCP, MCSD
Bewertete Fähigkeiten
Mit dieser Prüfung werden Ihre Fähigkeiten bei der Ausführung der unten aufgeführten technischen Aufgaben bewertet. Die Prozentangaben geben Aufschluss über die relative Gewichtung der einzelnen Schwerpunktthemen. Je höher der Prozentsatz, desto mehr Fragen zu diesem Bereich wird die Prüfung enthalten.
Bitte beachten Sie, dass die Prüfungsfragen sich auf die Themen in den nachfolgenden Aufzählungen beziehen, jedoch nicht darauf beschränkt sind.
Programmablauf verwalten (25 %)
Erstellen und Verwenden von Typen (24 %)
Debuggen von Anwendungen und Implementieren von Sicherheit (25 %)
Implementieren des Datenzugriffs (26 %)
NO.1 You are developing an application that includes the following code segment. (Line numbers
are included for reference only.)
You need to ensure that the application accepts only integer input and prompts the user each time
non-integer input is entered.
Which code segment should you add at line 19?
A. If (!int.TryParse(sLine, out number))
B. If ((number = Int32.Parse(sLine)) == Single.NaN)
C. If ((number = int.Parse(sLine)) > Int32.MaxValue)
D. If (Int32.TryParse(sLine, out number))
Answer: A
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Explanation:
B and C will throw exception when user enters non-integer value. D is exactly the opposite what we
want to achieve.
Int32.TryParse - Converts the string representation of a number to its 32-bit signed integer equivalent.
A return value indicates whether the conversion succeeded. http://msdn.microsoft.com/en-
us/library/f02979c7.aspx
NO.2 You need to create a method that can be called by using a varying number of parameters.
What should you use?
A. derived classes
B. interface
C. enumeration
D. method overloading
Answer: D
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Explanation:
Member overloading means creating two or more members on the same type that differ only in the
number or type of parameters but have the same name. Overloading is one of the most important
techniques for improving usability, productivity, and readability of reusable libraries. Overloading on
the number of parameters makes it possible to provide simpler versions of constructors and
methods. Overloading on the parameter type makes it possible to use the same member name for
members performing identical operations on a selected set of different types.
NO.3 You are developing a C# application. The application includes the following code segment, (Line
numbers are included for reference only.)
The application fails at line 17 with the following error message: "An item with the same key
has already been added."
You need to resolve the error.
Which code segment should you insert at line 16?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
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NO.4 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?
A. CryptoStream
B. AuthenticatedStream
C. PipeStream
D. NegotiateStream
Answer: A
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NO.5 You are testing an application. The application includes methods named CalculateInterest and
LogLine.
The CalculateInterest() method calculates loan interest. The LogLine()
method sends diagnostic messages to a console window.
The following code implements the methods. (Line numbers are included for reference only.)
You have the following requirements:
- The Calculatelnterest() method must run for all build configurations.
- The LogLine() method must run only for debug builds.
You need to ensure that the methods run correctly.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution.
Choose two.)
A. Insert the following code segment at line 01:
#region DEBUG
Insert the following code segment at line 10:
#endregion
B. Insert the following code segment at line 10:
[Conditional(MDEBUG")]
C. Insert the following code segment at line 05:
#region DEBUG
Insert the following code segment at line 07:
#endregion
D. Insert the following code segment at line 01:
#if DE30G
Insert the following code segment at line 10:
#endif
E. Insert the following code segment at line 01:
[Conditional(MDEBUG")]
F. Insert the following code segment at line 05:
#if DEBUG
Insert the following code segment at line 07:
#endif
G. Insert the following code segment at line 10: [Conditional("RELEASE")]
Answer: B,F
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Explanation:
#if DEBUG: The code in here won't even reach the IL on release.
[Conditional("DEBUG")]: This code will reach the IL, however the calls to the method will not execute
unless DEBUG is on.
http://stackoverflow.com/questions/3788605/if-debug-vs-conditionaldebug
NO.6 You are developing an application by using C#.
The application includes an object that performs a long running process.
You need to ensure that the garbage collector does not release the object's resources until the
process completes.
Which garbage collector method should you use?
A. WaitForFullGCComplete()
B. SuppressFinalize()
C. WaitForFullGCApproach()
D. WaitForPendingFinalizers()
Answer: B
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NO.7 DRAG DROP
You are developing a C# application. The application includes a class named Rate. The following code
segment implements the Rate class:
You define a collection of rates named rateCollection by using the following code segment:
Collection<Rate> rateCollection = new Collection<Rate>() ;
The application receives an XML file that contains rate information in the following format:
You need to parse the XML file and populate the rateCollection collection with Rate objects.
You have the following code: Which code segments should you include in Target 1, Target 2, Target 3
and Target 4 to complete the code? (To answer, drag the appropriate code segments to the correct
targets in the answer area. Each code segment may be used once, more than once, or not at all. You
may need to drag the split bar between panes or scroll to view content.)
Answer:
NO.8 You are developing an application by using C#. The application includes the following code
segment. (Line numbers are included for reference only.)
The DoWork() method must throw an InvalidCastException exception if the obj object is not of type
IDataContainer when accessing the Data property.
You need to meet the requirements. Which code segment should you insert at line 07?
A. var dataContainer = (IDataContainer) obj;
B. var dataContainer = obj as IDataContainer;
C. var dataContainer = obj is IDataContainer;
D. dynamic dataContainer = obj;
Answer: A
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Explanation:
http://msdn.microsoft.com/en-us/library/ms173105.aspx
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