70-483 Exam
Advanced Guide: 70-483 programming in c# download
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2021 Sep mcsd 70-483 pdf:
Q51. DRAG DROP - (Topic 1)
You are developing an application that will include a method named GetData. The
GetData() method will retrieve several lines of data from a web service by using a
System.IO.StreamReader object.
You have the following requirements:
. The GetData() method must return a string value that contains the first line of the response from the web service. . The application must remain responsive while the GetData() method runs.
You need to implement the GetData() method.
How should you complete the relevant code? (To answer, drag the appropriate objects to the correct locations in the answer area. Each object 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:
Q52. - (Topic 2)
You are developing a method named GenerateHash that will create the hash value for a file. The method includes the following code. (Line numbers are included for reference only.)
You need to return the cryptographic hash of the bytes contained in the fileBuffer variable. Which code segment should you insert at line 05?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Q53. DRAG DROP - (Topic 2)
You have the following class. (Line numbers are included for reference only.)
You need to complete the doOperation method to meet the following requirements:
. If AddNumb is passed as the operationName parameter, the AddNumb function is called. . If SubNumb is passed as the operationName parameter, the SubNumb function is called.
Which code should you insert at line 16? Develop the solution by selecting and arranging the required code blocks in the correct order. You may not need all of the code blocks.
Answer:
Q54. - (Topic 1)
You are developing an application that uses the Microsoft ADO.NET Entity Framework to retrieve order information from a Microsoft SQL Server database. The application includes the following code. (Line numbers are included for reference only.)
The application must meet the following requirements:
. Return only orders that have an OrderDate value other than null.
. Return only orders that were placed in the year specified in the year parameter.
You need to ensure that the application meets the requirements. Which code segment should you insert at line 08?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Q55. - (Topic 2)
You are implementing a new method named ProcessData. The ProcessData() method calls a third-party component that performs a long-running operation to retrieve stock information from a web service.
The third-party component uses the IAsyncResult pattern to signal completion of the long-running operation so that the UI can be updated with the new values.
You need to ensure that the calling code handles the long-running operation as a System.Threading.Tasks.Task object to avoid blocking the UI thread.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Create a TaskCompletionSource<T> object.
B. Call the component by using the TaskFactory.FromAsync() method.
C. Apply the following attribute to the ProcessData() method signature: [Methodlmpl(MethodlmplOptions.Synchronized)]
D. Apply the async modifier to the ProcessData() method signature.
Answer: A,B
Explanation: A: In many scenarios, it is useful to enable a Task<TResult> to represent an external asynchronous operation. TaskCompletionSource<TResult> is provided for this purpose. It enables the creation of a task that can be handed out to consumers, and those consumers can use the members of the task as they would any other. However, unlike most tasks, the state of a task created by a TaskCompletionSource is controlled explicitly by the methods on TaskCompletionSource. This enables the completion of the external asynchronous operation to be propagated to the underlying Task. The separation also ensures that consumers are not able to transition the state without access to the corresponding TaskCompletionSource.
B: TaskFactory.FromAsync Method
Creates a Task that represents a pair of begin and end methods that conform to the
Asynchronous Programming Model pattern. Overloaded.
Example:
TaskFactory.FromAsync Method (IAsyncResult, Action<IAsyncResult>)
Creates a Task that executes an end method action when a specified IAsyncResult completes.
Note:
* System.Threading.Tasks.Task Represents an asynchronous operation.
Renewal testdumps.com 70-483:
Q56. DRAG DROP - (Topic 2)
You are developing a class named Temperature.
You need to ensure that collections of Temperature objects are sortable.
You have the following code:
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.)
Answer:
Q57. - (Topic 2)
You have the following code:
You need to retrieve all of the numbers from the items variable that are greater than 80. Which code should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q58. - (Topic 1)
You use the Task.Run() method to launch a long-running data processing operation. The data processing operation often fails in times of heavy network congestion.
If the data processing operation fails, a second operation must clean up any results of the first operation.
You need to ensure that the second operation is invoked only if the data processing operation throws an unhandled exception.
What should you do?
A. Create a task within the operation, and set the Task.StartOnError property to true.
B. Create a TaskFactory object and call the ContinueWhenAll() method of the object.
C. Create a task by calling the Task.ContinueWith() method.
D. Use the TaskScheduler class to create a task and call the TryExecuteTask() method on the class.
Answer: C
Explanation:
Task.ContinueWith - Creates a continuation that executes asynchronously when the target Task completes.The returned Task will not be scheduled for execution until the current task has completed, whether it completes due to running to completion successfully, faulting due to an unhandled exception, or exiting out early due to being canceled. http://msdn.microsoft.com/en-us/library/dd270696.aspx
Q59. - (Topic 2)
You are developing an application by using C#. The application includes a method named SendMessage. The SendMessage() method requires a string input.
You need to replace "Hello" with "Goodbye" in the parameter that is passed to the SendMessage() method.
Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B,C
Explanation: * The first parameter should be Hello.
* String.Replace Method (String, String)
Returns a new string in which all occurrences of a specified string in the current instance are replaced with another specified string.
This method does not modify the value of the current instance. Instead, it returns a new string in which all occurrences of oldValue are replaced by newValue.
Q60. - (Topic 2)
You are developing an assembly.
You plan to sign the assembly when the assembly is developed.
You need to reserve space in the assembly for the signature.
What should you do?
A. Run the Assembly Linker tool from the Windows Software Development Kit (Windows SDK).
B. Run the Strong Name tool from the Windows Software Development Kit (Windows SDK).
C. Add the AssemblySignatureKeyAttribute attribute the assembly.
D. Add the AssemblyDelaySignAttribute attribute to the assembly.
Answer: D