70-483 | Microsoft 70-483 Braindumps 2021

NEW QUESTION 1
You are debugging an application that calculates loan interest. The application includes the following code. (Line numbers are included for reference only.)

You have the following requirements:
The debugger must break execution within the Calculatelnterest() method when the loanAmount variable is less than or equal to zero.
The release version of the code must not be impacted by any changes. You need to meet the requirements.
What should you do?

• A. Insert the following code segment at tine 05: Debug.Write(loanAmount > 0);
• B. Insert the following code segment at line 05: Trace.Write(loanAmount > 0);
• C. Insert the following code segment at line 03: Debug.Assert(loanAmount > 0);
• D. Insert the following code segment at line 03: Trace.Assert(loanAmount > 0);

Answer: C

Explanation: By default, the Debug.Assert method works only in debug builds. Use the Trace.Assert method if you want to do assertions in release builds. For more information, see Assertions in Managed Code. http://msdn.microsoft.com/en-us/library/kssw4w7z.aspx

NEW QUESTION 2
HOTSPOT
You define a class by using the following code:

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

Answer:

Explanation:

NEW QUESTION 3
DRAG DROP
You have the following code:

You need to display all of the vehicles that start with the letter “A”.
How should you complete the code? To answer, drag the appropriate code elements to the correct targets. 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.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

NEW QUESTION 4
DRAG DROP
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 entire 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:

Explanation: Box 1. async
Box 2. await
Box 3. ReadLineAsync(); Incorrect:
Not Box 3: ReadToEndAsync() is not correct since only the first line of the response is required.

NEW QUESTION 5
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

Explanation: The ComputeHash(Byte[]) method computes the hash value for the specified byte array.

NEW QUESTION 6
You are developing code for an application that retrieves information about Microsoft .NET Framework assemblies.
The following code segment is part of the application (line numbers are included for reference only):

You need to insert code at line 04. The code must load the assembly. Once the assembly is loaded, the code must be able to read the assembly metadata, but the code must be denied access from executing code from the assembly.
Which code segment should you insert at line 04?

• A. Assembly.RefilectionOnlyLoadFrom(bytes);
• B. Assembly.RefilectionOnlyLoad(bytes);
• C. Assembly.Load(bytes);
• D. Assembly.LoadFrom(bytes);

Answer: B

Explanation: The Assembly.RefilectionOnlyLoad method (Byte[]) loads the assembly from a common object file format (COFF)-based image containing an emitted assembly. The assembly is loaded into the refilection-only context of the caller's application domain.
You cannot execute code from an assembly loaded into the refilection-only context. Incorrect:
Not A: The Assembly.RefilectionOnlyLoadFrom method (String) loads an assembly into the refilectiononly context, given its path.
Reference: Assembly.RefilectionOnlyLoad Method (Byte[]) https://msdn.microsoft.com/en-us/library/h55she1h(v=vs.110).aspx

NEW QUESTION 7
HOTSPOT
You define a class by using the following code:

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

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

Answer:

Explanation:

NEW QUESTION 8
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: B

Explanation: Enumerable.Where<TSource> Method (IEnumerable<TSource>, Func<TSource, Boolean>) Filters a sequence of values based on a predicate.
Example: List<string> fruits =
new List<string> { "apple", "passionfruit", "banana", "mango", "orange", "blueberry", "grape", "strawberry" }; IEnumerable<string> query = fruits.Where(fruit => fruit.Length < 6); foreach (string fruit in query)
{
Console.WriteLine(fruit);
}
/*
This code produces the following output: apple
mango
grape
*/

NEW QUESTION 9
An application includes a class named Person. The Person class includes a method named GetData.
You need to ensure that the GetData() from the Person class. Which access modifier should you use for the GetData() method?

• A. Internal
• B. Protected
• C. Private
• D. Protected internal
• E. Public

Answer: B

Explanation: Protected - The type or member can be accessed only by code in the same class or structure, or in a class that is derived from that class.
The protected keyword is a member access modifier. A protected member is accessible within its class and by derived class instances.
Reference: http://msdn.microsoft.com/en-us/library/ms173121.aspx

NEW QUESTION 10
DRAG DROP
You write the following code.

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.

Answer:

Explanation: 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: IEnumerable<Type> types =
from a in AppDomain.CurrentDomain.GetAssemblies() from t in a.GetTypes()
select t;
Reference: http://stackoverflow.com/questions/4692340/find-types-in-all-assemblies

NEW QUESTION 11
You are developing a game that allows players to collect from 0 through 1000 coins. You are creating a method that will be used in the game. The method includes the following code. (Line numbers are included for reference only.)
01 public string FormatCoins(string name, int coins) 02 {
03
04 }
The method must meet the following requirements:
Return a string that includes the player name and the number of coins.
Display the number of coins without leading zeros if the number is 1 or greater. Display the number of coins as a single 0 if the number is 0.
You need to ensure that the method meets the requirements. Which code segment should you insert at line 03?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: A

NEW QUESTION 12
You are implementing a new method named ProcessData. The ProcessData() method calls a thirdparty 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: AB

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.

NEW QUESTION 13
You are developing an application. The application calls a method that returns an array of integers named customerIds. You define an integer variable named customerIdToRemove and assign a value to it. You declare an array named filteredCustomerIds.
You have the following requirements.
Remove duplicate integers from the customerIds array.
Sort the array in order from the highest value to the lowest value.
Remove the integer value stored in the customerIdToRemove variable from the customerIds array. You need to create a LINQ query to meet the requirements.
Which code segment should you use?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: C

Explanation: The Distinct keyword avoids duplicates, and OrderByDescending provides the proper ordering from highest to lowest.

NEW QUESTION 14
DRAG DROP
You have the following code.

You need to return all of the products and their associated categories.
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.

Answer:

Explanation: Example: Join operations create associations between sequences that are not explicitly modeled in the data sources. For example you can perform a join to find all the customers and distributors who have the same location. In LINQ the join clause always works against object collections instead of database tables directly.
C#
var innerJoinQuery = from cust in customers
join dist in distributors on cust.City equals dist.City
select new { CustomerName = cust.Name, DistributorName = dist.Name }; Reference: https://msdn.microsoft.com/en-us/library/bb397927.aspx https://msdn.microsoft.com/en-us/library/bb397927.aspx

NEW QUESTION 15
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.)

• A. AssemblyTitleAttribute
• B. AssemblyCultureAttribute
• C. AssemblyVersionAttribute
• D. AssemblyKeyNameAttribute
• E. AssemblyFileVersion

Answer: BC

Explanation: The AssemblyName object contains information about an assembly, which you can use to bind to that assembly. An assembly's identity consists of the following:
Simple name Version number
Cryptographic key pair Supported culture
B: 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's resources. A satellite assembly contains
only resources for a particular culture, as in [assembly:AssemblyCultureAttribute("de")] C: AssemblyVersionAttribute
Specifies the version of the assembly being attributed.
The assembly version number is part of an assembly's identity and plays a key part in binding to the assembly and in version policy.

NEW QUESTION 16
You are developing an application. The application includes a method named ReadFile that reads data from a file.
The ReadFile() method must meet the following requirements: It must not make changes to the data file.
It must allow other processes to access the data file.
It must not throw an exception if the application attempts to open a data file that does not exist. You need to implement the ReadFile() method.
Which code segment should you use?

• A. var fs = File.Open(Filename, FileMode.OpenOrCreate, FileAccess.Read, FileShare.ReadWrite);
• B. var fs = File.Open(Filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
• C. var fs = File.Open(Filename, FileMode.OpenOrCreate, FileAccess.Read, FileShare.Write);
• D. var fs = File.ReadAllLines(Filename);
• E. var fs = File.ReadAllBytes(Filename);

Answer: A

Explanation: FileMode.OpenOrCreate - Specifies that the operating system should open a file if it exists; otherwise, a new file should be created. If the file is opened with FileAccess.Read, FileIOPermissionAccess.Read permission is required. If the file access is FileAccess.Write,
FileIOPermissionAccess.Write permission is required. If the file is opened with FileAccess.ReadWrite, both FileIOPermissionAccess.Read and FileIOPermissionAccess.Write permissions are required. http://msdn.microsoft.com/en-us/library/system.io.filemode.aspx
FileShare.ReadWrite - Allows subsequent opening of the file for reading or writing.If this flag is not specified, any request to open the file for reading or writing (by this process or another process) will fail until the file is closed.However, even if this flag is specified, additional permissions might still be needed to access the file.
http://msdn.microsoft.com/pl-pl/library/system.io.fileshare.aspx