[Free] 2018(Aug) Dumps4cert Microsoft 70-483 Dumps with VCE and PDF Download 131-140

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Programming in C#

Question No: 131 – (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. DbDataReader

  2. DataContext

  3. unTyped DataSet

  4. DbDataAdapter

Answer: C

Explanation: DbDataReader Class

Reads a forward-only stream of rows from a data source.

Question No: 132 HOTSPOT – (Topic 2)

You have the following code:

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For each of the following statements, select Yes if the statement is true. Otherwise, select

No.

Dumps4Cert 2018 PDF and VCE

Answer:

Dumps4Cert 2018 PDF and VCE

Question No: 133 HOTSPOT – (Topic 2)

You define a class by using the following code:

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: 134 – (Topic 2)

You are developing an application.

You need to declare a delegate for a method that accepts an integer as a parameter, and then returns an integer.

Which type of delegate should you use?

  1. Actionlt;intgt;

  2. Actionlt;int, intgt;

  3. Funclt;int, intgt;

  4. Funclt;intgt;

Answer: C

Question No: 135 – (Topic 2)

You are developing an application that retrieves patient data from a web service. The application stores the JSON messages returned from the web service in a string variable named PatientAsJson. The variable is encoded as UTF-8. The application includes a class named Patient that is defined by the following code:

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You need to populate the Patient class with the data returned from the web service. 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: 136 – (Topic 2)

You are developing an application that includes a method named SendMessage.

You need to ensure that the SendMessage() method is called with the required parameters.

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

Dumps4Cert 2018 PDF and VCE

  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: C,D

Explanation: D: ExpandoObject

Represents an object whose members can be dynamically added and removed at run time.

/ The ExpandoObject class enables you to add and delete members of its instances at run time and also to set and get values of these members. This class supports dynamic binding, which enables you to use standard syntax like sampleObject.sampleMember instead of more complex syntax like sampleObject.GetAttribute(quot;sampleMemberquot;).

/ You can pass instances of the ExpandoObject class as parameters. Note that these instances are treated as dynamic objects in C# and late-bound objects in Visual Basic. This means that you do not have IntelliSense for object members and you do not receive compiler errors when you call non-existent members. If you call a member that does not exist, an exception occurs.

Note:

  • Visual C# 2010 introduces a new type, dynamic. The type is a static type, but an object of type dynamic bypasses static type checking. In most cases, it functions like it has type object. At compile time, an element that is typed as dynamic is assumed to support any operation. Therefore, you do not have to be concerned about whether the object gets its value from a COM API, from a dynamic language such as IronPython, from the HTML Document Object Model (DOM), from reflection, or from somewhere else in the program.

    However, if the code is not valid, errors are caught at run time.

    Question No: 137 – (Topic 2)

    You are developing an application that will be deployed to multiple computers. You set the assembly name.

    You need to create a unique identity for the application assembly.

    Which two assembly identity attributes should you include in the source code? (Each correct answer presents part of the solution. Choose two.)

    1. AssemblyDelaySignAttribute

    2. AssemblyCompanyAttribute

    3. AssemblyProductAttribute

    4. AssemblyCultureAttribute

    5. AssemblyVersionAttribute

    Answer: D,E

    Explanation: The AssemblyName object contains information about an assembly, which you can use to bind to that assembly. An assembly#39;s identity consists of the following: Simple name.

    Version number.

    Cryptographic key pair. Supported culture.

    D: AssemblyCultureAttribute

    Specifies which culture the assembly supports.

    The attribute is used by compilers to distinguish between a main assembly and a satellite assembly. A main assembly contains code and the neutral culture#39;s resources. A satellite assembly contains only resources for a particular culture, as in [assembly:AssemblyCultureAttribute(quot;dequot;)]

    E: AssemblyVersionAttribute

    Specifies the version of the assembly being attributed.

    The assembly version number is part of an assembly#39;s identity and plays a key part in binding to the assembly and in version policy.

    Question No: 138 – (Topic 2)

    You are implementing a method named ProcessData that performs a long-running task. The ProcessData() method has the following method signature:

    public void ProcessData(Listlt;decimalgt; values, CancellationTokenSource source, CancellationToken token)

    If the calling code requests cancellation, the method must perform the following actions:

    -> Cancel the long-running task.

    -> Set the task status to TaskStatus.Canceled.

    You need to ensure that the ProcessData() method performs the required actions. Which code segment should you use in the method body?

    1. if (token.IsCancellationRequested) return;

    2. throw new AggregateException();

    3. token.ThrowIfCancellationRequested();

    4. source.Cancel();

    Answer: C

    Question No: 139 DRAG DROP – (Topic 2)

    You are developing an application that implements a set of custom exception types. You declare the custom exception types by using the following code segments:

    Dumps4Cert 2018 PDF and VCE

    The application includes a function named DoWork that throws .NET Framework exceptions and custom exceptions. The application contains only the following logging methods:

    Dumps4Cert 2018 PDF and VCE

    The application must meet the following requirements:

    -> When ContosoValidationException exceptions are caught, log the information by using the static void Log (ContosoValidationException ex) method.

    -> When ContosoDbException or other ContosoException exceptions are caught, log

    the information by using the static void Log(ContosoException ex) method.

    You need to meet the requirements. You have the following code:

    Dumps4Cert 2018 PDF and VCE

    Which code segments should you include in Target 1, Target 2 and Target 3 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.)

    Dumps4Cert 2018 PDF and VCE

    Answer:

    Dumps4Cert 2018 PDF and VCE

    Explanation:

    Dumps4Cert 2018 PDF and VCE

    Catch the most specific exception first.

    Question No: 140 – (Topic 2)

    You are creating an application that reads from a database.

    You need to use different databases during the development phase and the testing phase by using conditional compilation techniques.

    What should you do?

    1. Configure the assembly metadata to use the pre-existing public key for the assembly identity by using the AssemblySignatureKeyAttribute attribute.

    2. Disable the strong-name bypass feature of Microsoft .NET Framework in the registry.

    3. Configure the Define DEBUG constant setting in Microsoft Visual Studio.

    4. Decorate the code by using the [assembly:AssemblyDelaySignAttribute(true)] attribute.

    Answer: C

    Explanation: Use one debug version to connect to the development database, and a standard version to connect to the live database.

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