[Free] Get all latest Microsoft 70-483 Actual Tests 181-190

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QUESTION 181

You are developing a method named GetHash that will return a hash value for a file. The method includes the following code. (Line numbers are included for reference only.)

 

clip_image001

 

You need to return the cryptographic hash of the bytes contained in the fileBytes variable.

 

Which code segment should you insert at line 05?

 

clip_image003

 

A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: A

 

 

QUESTION 182

You are developing an application that includes the following code segment:

 

clip_image004

 

You need to implement the Open() method of each interface in a derived class named UseResources and call the Open() method of each interface.

 

Which two code segments should you use? (Each correct answer presents part of the solution. Choose two.)

 

clip_image005

 

A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: AC

Explanation:

* An interface contains only the signatures of methods, properties, events or indexers. A class or struct that implements the interface must implement the members of the interface that are specified in the interface definition.

 

* Example:

interface ISampleInterface

{

void SampleMethod();

}

 

class ImplementationClass : ISampleInterface

{

// Explicit interface member implementation:

void ISampleInterface.SampleMethod()

{

// Method implementation.

}

 

static void Main()

{

// Declare an interface instance.

ISampleInterface obj = new ImplementationClass();

 

// Call the member.

obj.SampleMethod();

}

}

 

 

QUESTION 183

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

 

public void ProcessData(List<decimal> values, CancellationTokenSource source, CancellationToken token)

 

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

 

clip_image007Cancel the long-running task.

clip_image007[1]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?

 

A.

if (token.IsCancellationRequested)

return;

B.

throw new AggregateException();

C.

token.ThrowIfCancellationRequested();

D.

source.Cancel();

 

Correct Answer: C

 

 

 

 

 

QUESTION 184

HOTSPOT

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

 

clip_image009

 

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

 

clip_image010

 

Correct Answer:

clip_image011

 

 

 

 

QUESTION 185

You are developing an application in C#.

 

The application uses exception handling on a method that is used to execute mathematical calculations by using integer numbers.

 

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

 

clip_image012

You need to add the following code to the method:

 

clip_image014

 

At which line should you insert the code?

 

A.

01

B.

03

C.

05

D.

07

 

Correct Answer: A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

QUESTION 186

You are developing an application that uses multiple asynchronous tasks to optimize performance. The application will be deployed in a distributed environment. You need to retrieve the result of an asynchronous task that retrieves data from a web service. The data will later be parsed by a separate task. Which code segment should you use?

 

clip_image015

 

A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: B

QUESTION 187

You are implementing a method named GetValidPhoneNumbers. The GetValidPhoneNumbers() method processes a list of string values that represent phone numbers.

 

The GetValidPhoneNumbers() method must return only phone numbers that are in a valid format.

 

You need to implement the GetValidPhoneNumbers() method.

 

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

 

clip_image017

 

A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: AB

Explanation:

* Regex.Matches

Searches an input string for all occurrences of a regular expression and returns all the matches.

 

* 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.

 

* List<T>.Add Method

Adds an object to the end of the List<T>.

 

 

QUESTION 188

DRAG DROP

You are developing an application that will write data to a file. The application includes the following code segment. (Line numbers are included for reference only.)

 

You need to ensure that the WriteData() method will write data to a file.

 

Which four code segments should you insert in sequence at line 03? (To answer, move the appropriate code segments from the list of code segments to the answer area and arrange them in the correct order.)

 

clip_image019

 

Correct Answer:

clip_image021

 

 

QUESTION 189

You need to create a method that can be called by using a varying number of parameters. What should you use?

 

A.

derived classes

B.

interface

C.

enumeration

D.

method overloading

 

Correct Answer: D

Explanation:

Member overloading means creating two or more members on the same type that differ only in the number or type of parameters but have the same name. Overloading is one of the most important techniques for improving usability, productivity, and readability of reusable libraries. Overloading on the number of parameters makes it possible to provide simpler versions of constructors and methods. Overloading on the parameter type makes it possible to use the same member name for members performing identical operations on a selected set of different types.

 

 

QUESTION 190

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?

 

A.

Configure the Define TRACE constant setting in Microsoft Visual Studio.

B.

Decorate the code by using the [DebuggerDisplay(“Mydebug”)] attribute.

C.

Configure the Define DEBUG constant setting in Microsoft Visual Studio.

D.

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

 

Correct 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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