Downloadable 70-483 Free Practice Questions 2021

NEW QUESTION 1
HOTSPOT
You are creating a method named getThankYou that accepts four parameters and returns a formatted string.
The getThanksYou method has the following signature.

The method needs to return a formatted string as shown in the following example. Thank you Ben Smith for order 1234. The total price is $321.05.
The current culture when the method executes is en-US.
How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

Answer:

Explanation:

NEW QUESTION 2
HOTSPOT
You have the following class definitions.

There might be other classes derived from Shape.
You are creating an application that evaluates whether an object is a square, a rectangle, or another shape.
You need to implement a switch statement that meets the following requirements:
If the shape variable is of the Rectangle type, and the width and the height are NOT equal, the output must be Rectangle.
If the shape variable is of the Rectangle type, and the width and the height are equal, the output must be Square.
If the shape variable is of any other Shape derived type, the output must be Unknown. If the shape variable does NOT refer to an object, the output must be Empty.
How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

Answer:

Explanation: Box 1: if
Box 2: Rectangle r when (r.Width ! = r.Height): Box 3: default
Box 4: case null

NEW QUESTION 3
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 4
You have an application that accesses a Web server named Server1.
You need to download an image named Imagel.jpg from Server1 and store the image locally as Filel.jpg.
Which code should you use?

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

Answer: C

NEW QUESTION 5
HOTSPOT
You have the following code:

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

Answer:

Explanation: Note:
* CustomerID is declared private.
* CompanyName is declted protected.
* State is declared protected.
The protected keyword is a member access modifier. A protected member is accessible from within the class in which it is declared, and from within any class derived from the class that declared this member.

NEW QUESTION 6
You are developing an application that includes methods named EvaluateLoan, ProcessLoan, and FundLoan. The application defines build configurations named TRIAL, BASIC, and ADVANCED.
You have the following requirements:
The TRIAL build configuration must run only the EvaluateLoan() method. The BASIC build configuration must run all three methods.
The ADVANCED build configuration must run only the EvaluateLoan() and ProcessLoan() methods. You need to meet the requirements.
Which code segment should you use?

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

Answer: C

Explanation: Incorrect:
Not B: The BASIC configuration must run all three methods. Not D: The BASIC configuration must run all three methods.

NEW QUESTION 7
You are developing an application by using C#.
The application includes an object that performs a long running process.
You need to ensure that the garbage collector does not release the object's resources until the process completes.
Which garbage collector method should you use?

• A. WaitForFullGCComplete()
• B. SuppressFinalize()
• C. WaitForFullGCApproach()
• D. WaitForPendingFinalizers()

Answer: B

Explanation: You can use the SuppressFinalize method in a resource class to prevent a redundant garbage collection from being called.
Reference: GC.SuppressFinalize Method (Object)
https://msdn.microsoft.com/en-us/library/system.gc.suppressfinalize(v=vs.110).aspx

NEW QUESTION 8
DRAG DROP
You have the following code.

You need to ensure that the classify string contains the next “positive” if the input number is more than zero and “negative” if the input number is less than or equal to zero.
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:

NEW QUESTION 9
You are implementing a method named Calculate that performs conversions between value types and reference types. The following code segment implements the method. (Line numbers are included for reference only.)

You need to ensure that the application does not throw exceptions on invalid conversions. Which code segment should you insert at line 04?

• A. int balance = (int) (float)amountRef;
• B. int balance = (int)amountRef;
• C. int balance = amountRef;
• D. int balance = (int) (double) amountRef;

Answer: A

Explanation: Explicit cast of object into float, and then another Explicit cast of float into int. Reference: explicit (C# Reference)
https://msdn.microsoft.com/en-us/library/xhbhezf4.aspx

NEW QUESTION 10
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?

• A. SqlDataAdapter
• B. DataContext
• C. DbDataAdapter
• D. OleDbDataReader

Answer: D

Explanation: OleDbDataReader Class
Provides a way of reading a forward-only stream of data rows from a data source. Example:
OleDbConnection cn = new OleDbConnection(); OleDbCommand cmd = new OleDbCommand(); DataTable schemaTable;
OleDbDataReader myReader;
//Open a connection to the SQL Server Northwind database.
cn.ConnectionString = "Provider=SQLOLEDB;Data Source=server;User ID=login; Password=password;Initial Catalog=Northwind";

NEW QUESTION 11
You are developing a C# application that has a requirement to validate some string input data by using the Regex class.
The application includes a method named ContainsHyperlink. The ContainsHyperlink() method will verify the presence of a URI and surrounding markup.
The following code segment defines the ContainsHyperlink() method. (Line numbers are included for reference only.)

The expression patterns used for each validation function are constant.
You need to ensure that the expression syntax is evaluated only once when the Regex object is
initially instantiated.
Which code segment should you insert at line 04?

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

Answer: D

Explanation: RegexOptions.Compiled - Specifies that the regular expression is compiled to an assembly.This yields faster execution but increases startup time.This value should not be assigned to the Options property when calling the CompileToAssembly method.
http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regexoptions.aspx Additional info
http://stackoverflow.com/questions/513412/how-does-regexoptions-compiled-work

NEW QUESTION 12
You need to write a console application that meets the following requirements:
If the application is compiled in Debug mode, the console output must display Entering debug mode. If the application is compiled in Release mode, the console output must display Entering release mode.
Which code should you use?

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

Answer: D

Explanation: #elif lets you create a compound conditional directive. The #elif expression will be evaluated if neither the preceding #if (C# Reference) nor any preceding, optional, #elif directive expressions evaluate to true. If a #elif expression evaluates to true, the compiler evaluates all the code between the #elif and the next conditional directive. For example:
#define VC7
//...
#if debug Console.Writeline("Debug build");
#elif VC7
Console.Writeline("Visual Studio 7");
#endif Incorrect: Not B:
* System.Refilection.Assembly.GetExecutingAssembly Method Gets the assembly that contains the code that is currently executing.
* Assembly.IsDefined Method
Indicates whether or not a specified attribute has been applied to the assembly.
* System.Dignostics.Debugger Class Enables communication with a debugger. Property: IsAttached
Gets a value that indicates whether a debugger is attached to the process.

NEW QUESTION 13
You have the following code (line numbers are included for reference only):

You need to identify the missing line of code at line 15. Which line of code should you identify?

• A. using (fooSqlConn.BeginTransaction())
• B. while (fooSqlReader.Read())
• C. while (fooSqlReader.NextResult())
• D. while (fooSqlReader.GetBoolean(0))

Answer: B

Explanation: The SqlDataReader.Read method advances the SqlDataReader to the next record. Example:
SqlCommand command =
new SqlCommand(queryString, connection); connection.Open();
SqlDataReader reader = command.ExecuteReader();
// Call Read before accessing data. while (reader.Read())
{
ReadSingleRow((IDataRecord)reader);
}
// Call Close when done reading. reader.Close();
}
Reference: SqlDataReader.Read Method ()
https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldatareader.read(v=vs.110).aspx

NEW QUESTION 14
You are developing an application that includes a class named Employee and a generic list of employees. The following code segment declares the list of employees:
List<Employee> employeesList = new List<Employee>();
You populate the employeesList object with several hundred Employee objects. The application must display the data for five Employee objects at a time.
You need to create a method that will return the correct number of Employee objects. Which code segment should you use?

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

Answer: B

Explanation: public static IEnumerable Page(IEnumerable source, int page, int pageSize)
{
return source.Skip((page – 1) * pageSize).Take(pageSize);
}i
f page 1 means it skips 0 and take the pageSize
if page 2 means it skips first page and take the 2nd page.

NEW QUESTION 15
You are creating a console application named App1.
App1 retrieves data from the Internet by using JavaScript Object Notation (JSON).
You are developing the following code segment (line numbers are included for reference only):

You need to ensure that the code validates the JSON string. Which code should you insert at line 03?

• A. DataContractSerializer serializer = new DataContractSerializer();
• B. var serializer = new DataContractSerializer();
• C. XmlSerlalizer serializer = new XmlSerlalizer();
• D. var serializer = new JavaScriptSerializer();

Answer: D

Explanation: The JavaScriptSerializer Class Provides serialization and deserialization functionality for AJAXenabled applications.
The JavaScriptSerializer class is used internally by the asynchronous communication layer to serialize and deserialize the data that is passed between the browser and the Web server. You cannot access that instance of the serializer. However, this class exposes a public API. Therefore, you can use the class when you want to work with JavaScript Object Notation (JSON) in managed code.

NEW QUESTION 16
You are modifying an existing application.
The application includes a Loan class and a Customer class. The following code segment defines the classes.

You populate a collection named customer-Collection with Customer and Loan objects by using the following code segment:

You create a largeCustomerLoans collection to store the Loan objects by using the following code segment:
Collection<Loan> largeCustomerLoans = new Collection<Loan>();
All loans with an Amount value greater than or equal to 4000 must be tracked. You need to populate the largeCustomerLoans collection with Loan objects. Which code segment should you use?

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

Answer: D

Explanation: We must add to the largeCustomerLoans collection, not the customerLoanCollection.
We iterate through each customer in customerCollection and check each loan belonging to this customer.

NEW QUESTION 17
You are developing an application by using C#.
The application includes an object that performs a long running process.
You need to ensure that the garbage collector does not release the object's resources until the process completes.
Which garbage collector method should you use?

• A. RemoveMemoryPressure()
• B. ReRegisterForFinalize()
• C. WaitForFullGCComplete()
• D. KeepAlive()

Answer: D

Explanation: The purpose of the KeepAlive method is to ensure the existence of a reference to an object that is at risk of being prematurely reclaimed by the garbage collector.
Reference: GC.KeepAlive Method (Object)
https://msdn.microsoft.com/en-us/library/system.gc.keepalive(v=vs.110).aspx

NEW QUESTION 18
You are developing an application that includes a class named BookTracker for tracking library books. The application includes the following code segment. (Line numbers are included for reference only.)

You need to add a user to the BookTracker instance. What should you do?

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

Answer: B