[Free] 2018(Aug) Dumps4cert Microsoft 70-483 Dumps with VCE and PDF Download 121-130

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Programming in C#

Question No: 121 – (Topic 2)

You have the following code (line numbers are included for reference only):

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You need to ensure that new instances of Connection can be created only by other classes by calling the Create method. The solution must allow classes to inherit from Connection.

What should you do?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: B

Explanation: The following list provides the main features of a static class:

  • Contains only static members.

  • Cannot be instantiated.

  • Is sealed.

  • Cannot contain Instance Constructors.

  • Creating a static class is therefore basically the same as creating a class that contains only static members and a private constructor. A private constructor prevents the class from being instantiated.

    Incorrect:

    Not A: An abstract method is a method that is declared without an implementation. Not C: Private methods can be called from derived classes.

    Reference: Static Classes and Static Class Members (C# Programming Guide)

    https://msdn.microsoft.com/en-us/library/79b3xss3.aspx

    Question No: 122 – (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 MySource and a custom log named MyLog on the server.

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

    Dumps4Cert 2018 PDF and VCE

    1. Option A

    2. Option B

    3. Option C

    4. Option D

    Answer: D

    Question No: 123 – (Topic 2)

    You need to write a method that combines an unknown number of strings. The solution must minimize the amount of memory used by the method when the method executes.

    What should you include in the code?

    1. The String.Concat method

    2. The StringBuilder.Append method

    3. The operator

    4. The = operator

    Answer: A

    Explanation: A: String.Concat Method

    Concatenates one or more instances of String, or the String representations of the values of one or more instances of Object.

    Question No: 124 – (Topic 2)

    You are developing an application that will read data from a text file and display the file contents.

    You need to read data from the file, display it, and correctly release the file resources. Which code segment should you use?

    Dumps4Cert 2018 PDF and VCE

    1. Option A

    2. Option B

    3. Option C

    4. Option D

    Answer: A

    Question No: 125 – (Topic 2)

    You are developing an application.

    The application contains the following code segment (line numbers are included for reference only):

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    When you run the code, you receive the following error message: quot;Cannot implicitly convert type #39;object#39;#39; to #39;int#39;. An explicit conversion exists (are you missing a cast?).quot;

    You need to ensure that the code can be compiled. Which code should you use to replace line 05?

    1. var2 = arrayl[0] is int;

    2. var2 = ((Listlt;intgt;)arrayl) [0];

    3. var2 = arrayl[0].Equals(typeof(int));

    4. var2 = (int) arrayl [0];

    Answer: D

    Question No: 126 DRAG DROP – (Topic 2)

    You write the following code.

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    You need to get the list of all the types defined in the assembly that is being executed currently.

    How should you complete the code? To answer, drag the appropriate code elements to the correct targets in the answer area. Each code element 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.

    Dumps4Cert 2018 PDF and VCE

    Answer:

    Dumps4Cert 2018 PDF and VCE

    Explanation:

    Target 1: AppDomain

    Target 2: SelectMany

    Target 3: select

    The AppDomain.CurrentDomain.GetAssemblies() gives you all assemblies loaded in the current application domain.

    The Assembly class provides a GetTypes() method to retrieve all types within that particular assembly.

    Example: Using Linq:

    IEnumerablelt;Typegt; types =

    from a in AppDomain.CurrentDomain.GetAssemblies() from t in a.GetTypes()

    select t;

    Question No: 127 – (Topic 2)

    You write the following method (line numbers are included for reference only):

    Dumps4Cert 2018 PDF and VCE

    You need to ensure that the method extracts a list of URLs that match the following pattern:

    @http://(www\.)?([^\.] )\.com;

    Which code should you insert at line 07?

    Dumps4Cert 2018 PDF and VCE

    1. Option A

    2. Option B

    3. Option C

    4. Option D

    Answer: A

    Explanation: The MatchCollection.GetEnumerator method returns an enumerator that iterates through a collection.

    Note:

    The MatchCollection Class represents the set of successful matches found by iteratively applying a regular expression pattern to the input string.

    Incorrect:

    Not B: The ICollection.SyncRoot property gets an object that can be used to synchronize access to the ICollection.

    Reference: MatchCollection.GetEnumerator Method https://msdn.microsoft.com/en-

    us/library/system.text.regularexpressions.matchcollection.getenumerator(v=vs.110).aspx

    Question No: 128 – (Topic 2)

    You write the following method (line numbers are included for reference only):

    Dumps4Cert 2018 PDF and VCE

    You need to ensure that the method extracts a list of URLs that match the following pattern:

    @http://(www\.)?([^\.] )\.com;

    Which code should you insert at line 07?

    Dumps4Cert 2018 PDF and VCE

    1. Option A

    2. Option B

    3. Option C

    4. Option D

    Answer: D

    Explanation: * MatchCollection

    Represents the set of successful matches found by iteratively applying a regular expression pattern to the input string.

    The collection is immutable (read-only) and has no public constructor. The Regex.Matches method returns a MatchCollection object.

    * Listlt;Tgt;.Add Method

    Adds an object to the end of the Listlt;Tgt;. Incorrect:

    Not A: ICollection.SyncRoot Property

    For collections whose underlying store is not publicly available, the expected implementation is to return the current instance. Note that the pointer to the current instance might not be sufficient for collections that wrap other collections; those should return the underlying collection#39;s SyncRoot property.

    Question No: 129 HOTSPOT – (Topic 2)

    You have the following code (line numbers are included for reference only):

    Dumps4Cert 2018 PDF and VCE

    To answer, complete each statement according to the information presented in the code.

    Dumps4Cert 2018 PDF and VCE

    Answer:

    Dumps4Cert 2018 PDF and VCE

    Question No: 130 DRAG DROP – (Topic 2)

    You are adding a method to an existing application. The method uses an integer named statusCode as an input parameter and returns the status code as a string.

    The method must meet the following requirements:

    -> Return quot;Errorquot; if the statusCode is 0.

    -> Return quot;Successquot; if the statusCode is 1.

    -> Return quot;Unauthorizedquot; if the statusCode is any value other than 0 or l.

    You need to implement the method 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:

    Dumps4Cert 2018 PDF and VCE

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