[Free] 2018(Jan) EnsurePass Testinsides Microsoft 70-483 Dumps with VCE and PDF Download 141-150

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Programming in C#

Question No: 141 – (Topic 2)

You have the following code. (Line numbers are included for reference only.)

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When you execute the code, you get an exception.

You need to ensure that B_Products contain all of the products that start with the letter 鈥淏鈥? What should you do?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: D

Explanation: Simply select the product items.

Question No: 142 – (Topic 2)

You are developing an application by using C#. The application will write events to an event log. You plan to deploy the application to a server.

You create an event source named AppSource and a custom log named AppLog on the server.

You need to write events to the custom log. Which code segment should you use?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: A

Explanation: Source should be AppSource:

  • New-EventLog

    Creates a new event log and a new event source on a local or remote computer. Parameters include:

    -Sourcelt;String[]gt;

    Specifies the names of the event log sources, such as application programs that write to the event log. This parameter is required.

    Question No: 143 – (Topic 2)

    You are developing an application that contains a class named TheaterCustomer and a method named ProcessTheaterCustomer. The ProcessTheaterCustomer() method accepts a TheaterCustomer object as the input parameter.

    You have the following requirements:

    -> Store the TheaterCustomer objects in a collection.

    -> Ensure that the ProcessTheaterCustomer() method processes the TheaterCustomer objects in the order in which they are placed into the collection.

    You need to meet the requirements. What should you do?

    1. Create a System.Collections.Stack collection. Use the Push() method to add TheaterCustomer objects to the collection, Use the Peek() method to pass the objects to the ProcessTheaterCustomer() method.

    2. Create a System.Collections.Queue collection. Use the Enqueue() method to add TheaterCustomer objects to the collection. Use the Dequeue() method to pass the objects to the ProcessTheaterCustomer() method.

    3. Create a System.Collections.SortedList collection. Use the Add() method to add TheaterCustomer objects to the collection. Use the Remove() method to pass the objects to the ProcessTheaterCustomer() method.

    4. Create a System.Collections.ArrayList collection. Use the Insert() method to add

    TheaterCustomer objects to the collection. Use the Remove() method to pass the objects to the ProcessTheaterCustomer() method.

    Answer: B

    Question No: 144 DRAG DROP – (Topic 2)

    You are adding a function to a membership tracking application. The function uses an integer named memberCode as an input parameter and returns the membership type as a string.

    The function must meet the following requirements:

    -> Return quot;Non-Memberquot; if the memberCode is 0.

    -> Return quot;Memberquot; if the memberCode is 1.

    -> Return quot;Invalidquot; if the memberCode is any value other than 0 or 1.

    You need to implement the function to meet the requirements.

    How should you complete the relevant code? (To answer, drag the appropriate statements to the correct locations in the answer area. Each statement 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.)

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    Answer:

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    Question No: 145 – (Topic 2)

    You are creating a class library that will be used in a web application. You need to ensure that the class library assembly is strongly named. What should you do?

    1. Use assembly attributes.

    2. Use the csc.exe /target:Library option when building the application.

    3. Use the xsd.exe command-line tool.

    4. Use the EdmGen.exe command-line tool.

    Answer: A

    Explanation: The Windows Software Development Kit (SDK) provides several ways to sign an assembly with a strong name:

  • (A) Using assembly attributes to insert the strong name information in your code. You can use either the AssemblyKeyFileAttribute or the AssemblyKeyNameAttribute, depending on where the key file to be used is located.

  • Using the Assembly Linker (Al.exe) provided by the Windows SDK.

  • Using compiler options such /keyfile or /delaysign in C# and Visual Basic, or the

  • /KEYFILE or /DELAYSIGN linker option in C . (For information on delay signing, see

    Delay Signing an Assembly.)

    Question No: 146 – (Topic 2)

    You need to write a method that retrieves data from a Microsoft Access 2013 database. The method must meet the following requirements:

    -> Be read-only.

    -> Be able to use the data before the entire data set is retrieved.

    -> Minimize the amount of system overhead and the amount of memory usage.

    Which type of object should you use in the method?

    1. DbDataAdapter

    2. unTyped DataSet

    3. OleDbDataAdapter

    4. DbDataReader

    Answer: D

    Explanation: The DbDataReader class reads a forward-only stream of rows from a data source.

    Reference: DbDataReader Class

    https://msdn.microsoft.com/en- us/library/system.data.common.dbdatareader(v=vs.110).aspx

    Question No: 147 – (Topic 2)

    You are developing an application that generates code. The application includes the following code segment. (Line numbers are included for reference only.)

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    You need to ensure that code generated by the GenerateCode() method represents a class that can be accessed by all objects in its application domain.

    Which two code segments can you insert at line 05 to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

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    1. Option A

    2. Option B

    3. Option C

    4. Option D

    Answer: A,C

    Question No: 148 – (Topic 2)

    You have the following code. (Line numbers are included for reference only).

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    You need to complete the WriteTextAsync method. The solution must ensure that the code is not blocked while the file is being written.

    Which code should you insert at line 12?

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    1. Option A

    2. Option B

    3. Option C

    4. Option D

    Answer: D

    Explanation: await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);

    The following example has the statement await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);, which is a contraction of the following two statements:

    Task theTask = sourceStream.WriteAsync(encodedText, 0, encodedText.Length); await theTask;

    Example: The following example writes text to a file. At each await statement, the method immediately exits. When the file I/O is complete, the method resumes at the statement that follows the await statement. Note that the async modifier is in the definition of methods that use the await statement.

    public async void ProcessWrite()

    {

    string filePath = @quot;temp2.txtquot;; string text = quot;Hello World\r\nquot;;

    await WriteTextAsync(filePath, text);

    }

    private async Task WriteTextAsync(string filePath, string text)

    {

    byte[] encodedText = Encoding.Unicode.GetBytes(text);

    using (FileStream sourceStream = new FileStream(filePath, FileMode.Append, FileAccess.Write, FileShare.None, bufferSize: 4096, useAsync: true))

    {

    await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);

    };

    }

    Reference: Using Async for File Access (C# and Visual Basic) https://msdn.microsoft.com/en-us/library/jj155757.aspx

    Question No: 149 – (Topic 2)

    You are developing an application that will parse a large amount of text.

    You need to parse the text into separate lines and minimize memory use while processing

    data.

    Which object type should you use?

    1. DataContractSerializer

    2. StringBuilder

    3. StringReader

    4. JsonSerializer

    Answer: C

    Question No: 150 – (Topic 2)

    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.)

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    You have the following requirements:

    -> The CalculateInterest() 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.)

    1. Insert the following code segment at line 01:

      #region DEBUG

      Insert the following code segment at line 10:

      #endregion

    2. Insert the following code segment at line 01: [Conditional(quot;DEBUGquot;)]

    3. Insert the following code segment at line 05:

      #region DEBUG

      Insert the following code segment at line 07:

      #endregion

    4. Insert the following code segment at line 10: [Conditional(quot;DEBUGquot;)]

    5. Insert the following code segment at line 01:

      #if DEBUG

      Insert the following code segment at line 10:

      #endif

    6. Insert the following code segment at line 10: [Conditional(quot;RELEASEquot;)]

    7. Insert the following code segment at line 05:

    #if DEBUG

    Insert the following code segment at line 07:

    #endif

    Answer: D,G

    Explanation: D: Also, it#39;s worth pointing out that you can use [Conditional(quot;DEBUGquot;)] attribute on methods that return void to have them only executed if a certain symbol is defined. The compiler would remove all calls to those methods if the symbol is not defined:

    [Conditional(quot;DEBUGquot;)] void PrintLog() {

    Console.WriteLine(quot;Debug infoquot;);

    }

    void Test() { PrintLog();

    }

    G: When the C# compiler encounters an #if directive, followed eventually by

    an #endif directive, it will compile the code between the directives only if the specified symbol is defined. Unlike C and C , you cannot assign a numeric value to a symbol; the

    #if statement in C# is Boolean and only tests whether the symbol has been defined or not. For example,

    #define DEBUG

    #if DEBUG

    Console.WriteLine(quot;Debug versionquot;);

    #endif

    Reference: http://stackoverflow.com/questions/2104099/c-sharp-if-then-directives-for- debug-vs-release

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