| Exam Code | 70-483 |
| Exam Name | Programming in C# |
| Questions | 305 Questions Answers With Explanation |
| Update Date | March 05,2024 |
| Price |
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You are developing a Windows Forms (WinForms) application. The application displays a TreeView that has 1,000 nodes.You need to ensure that if a user expands a node, and then collapses the TreeView, the node object is kept in memory unless the Garbage Collector requires additional memory.Which object should you use to store the node?
A. GC
B. Handle
C. Cache
D. Wea kReference
You have the following class definition.You discover that when you execute the following code, the SpawnTasks method enters an infinite loop.You need to prevent the SpawnTasks method from entering an infinite loop.Which two changes should you make to the code? Each correct answer presents part of the solution.NOTE: Each correct selection is worth one point.
A. Add a property to the ProcessManagement class. Modify the property to allow only positive values to be stored in the DegreeOfParallelism member variable.
B. Add a property to the ProcessManagement class. Modify the property to allow only positive values to be stored in the NumberOfTasks member variable.
C. Change the accessor of the ProcessManagement class to internal.
D. Change the accessor of the DegreeOfParallelism member variable to private.
E. Change the accessor of the SpawnTasks method to private.
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.You have the following C# code. (Line numbers are included for reference only.)You need the foreach loop to display a running total of the array elements, as shown in the following output.1361015Solution: You insert the following code at line 02:Does this meet the goal?
A. Yes
B. No
You are developing a C# application named Application1 by using Microsoft Visual Studio 2017.You plan to compare the memory usage between different builds of Application1.You need to record the memory usage of each build.What should you use from Visual Studio?
A. IntelliTrace
B. Memory Usage from Performance Profiler
C. Performance Wizard from Performance Profiler
D. Code Analysis
You have the following C# code.What is the output of the code?
A. -4
B. -3
C. 2
D.3
E. 7
You have two assemblies named Assembly1 and Assembly2 that are written in C#. Assembly1 loads Assembly2 by executing the following code.You create a new project in Microsoft Visual Studio to build a new assembly that will replace Assembly2. The new assembly has the same name and version as the original Assembly2 assembly.When you execute the code, Assembly1 cannot load Assembly2.What should you do to ensure that Assembly1 can load Assembly2?
A.Modify the project properties. Click Delay sign only.
B. Change the version of new Assembly2 assembly to 1.0.2.5.
C. Use the sn.exe command to create a new key file. Set the assembly:AssemblyKeyFileAttribute attribute to the new key file.
D. Run the al.exe command to sign Assembly2. Use the same key file used for the original Assembly2 assembly.
You need to create a method that can be called by using a varying number of parameters.What should you use?
A. enumeration
B. Language-Integrated Query (LINQ) query expressions
C. interface
D. optional parameters
You plan to create a list of customers named customers. Each customer will have a name and a key. The name and the key will be strings.You will use the following code to retrieve customers from the list.customers[aKey].toString();You need to identify which class must be used to declare the customers list. The solution must ensure that each key is unique. Which class should you identify?
A. ArrayList
B. Dictionary
C. List
D. Array
You have the following code.You need to remove all of the data from the myData list.Which code should you use?
A. for (int i = 0; i <= myData.Count; i++)myData.RemoveAt(i);
B. while (myData.Count ! = 0)myData.RemoveAt(0);
C. foreach(string currentString in myData) myData.Remove(currentString);
D. for (int i = 0; i <= myData.Count; i++)myData.RemoveAt(0);
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 IAsyncRcsult 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 5ystem.Threading_Tasks.Task object to avoid blocking the Ul thread.Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Apply the async modifier to the ProcessData() method signature.
B. Call the component by using the TaskFactory FromAsync() method.
C. Apply the following attribute to the ProcessDataO method signature:[Methodlmpl (MetrhodlmplOptiions . Synchronized) ]
D. Create a TaskCompletionSource<T> object.
