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Microsoft 70-483 Exam pdf
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Exam 70-483: Programming in C# – Microsoft: https://www.microsoft.com/en-us/learning/exam-70-483.aspx
Skills measured
This exam measures your ability to accomplish the technical tasks listed below.
- Manage Program Flow (25-30%)
- Create and Use Types (25-30%)
- Debug Applications and Implement Security (25-30%)
- Implement Data Access (25-30%)
Microsoft 70-483 Online Exam Practice Questions
QUESTION 1
You have the following code (line numbers are included for reference only): You need to ensure that new instances of
Connection can be created only by other classes by calling the Create method. The solution must allow classes to
inherit from Connection. What should you do?
A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: B
Explanation: The following list provides the main features of a static class:
*
Contains only static members.
*
Cannot be instantiated.
*
Is sealed.
*
Cannot contain Instance Constructors.
Creating a static class is therefore basically the same as creating a class that contains only static members and a
private constructor. A private constructor prevents the class from being instantiated.
Incorrect:
Not A: An abstract method is a method that is declared without an implementation. Not C: Private methods can be
called from derived classes.
Reference: Static Classes and Static Class Members (C# Programming Guide)
https://msdn.microsoft.com/en-us/library/79b3xss3.aspx
QUESTION 2
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.
QUESTION 3
HOTSPOT
You are developing the following classes named:
Class1
Class2
Class3
All of the classes will be part of a single assembly named Assembly.dll. Assembly.dll will be used by multiple
applications.
All of the classes will implement the following interface, which is also part ofAssembly.dll:
public interface Interface1
{
void Method1(decimal amount);
void Method2(decimal amount);
}
You need to ensure that the Method2 method for the Class3 class can be executed only when instances of the class are
accessed through the Interface1 interface. The solution must ensure that calls to the Method1 method can be made
either through the interface or through an instance of the class.
Which signature should you use for each method? (To answer, select the appropriate signature for each method in the
answer area.)
Hot Area:
Correct Answer:
QUESTION 4
You have the following code. (Line numbers are included for reference only).
You need to complete the WriteTextAsync method. The solution must ensure that the code is not blocked while the file
is being written. Which code should you insert at line 12?
A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: D
Explanation: await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);
The following example has the statement await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);,
which is a contraction of the following two statements:
Task theTask = sourceStream.WriteAsync(encodedText, 0, encodedText.Length); await theTask;
Example: The following example writes text to a file. At each await statement, the method immediately exits. When the
file I/O is complete, the method resumes at the statement that follows the await statement. Note that the async modifier
is
in the definition of methods that use the await statement.
public async void ProcessWrite()
{
string filePath = @”temp2.txt”;
string text = “Hello World\r\n”;
await WriteTextAsync(filePath, text);
}
private async Task WriteTextAsync(string filePath, string text) {
byte[] encodedText = Encoding.Unicode.GetBytes(text);
using (FileStream sourceStream = new FileStream(filePath, FileMode.Append, FileAccess.Write, FileShare.None,
bufferSize: 4096, useAsync: true))
{
await sourceStream.WriteAsync(encodedText, 0, encodedText.Length); };
}
Reference: Using Async for File Access (C# and Visual Basic)
https://msdn.microsoft.com/en-us/library/jj155757.aspx
QUESTION 5
DRAG DROP
You are developing a C# application. The application includes a class named Rate. The following code segment
implements the Rate class:
You define a collection of rates named rateCollection by using the following code segment:
Collection rateCollection = new Collection() ;
The application receives an XML file that contains rate information in the following format:
You need to parse the XML file and populate the rateCollection collection with Rate objects. You have the following
code:
Which code segments should you include in Target 1, Target 2, Target 3 and Target 4 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.)
Select and Place:
Correct Answer:
QUESTION 6
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
Correct Answer: D
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
QUESTION 7
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
Correct Answer: B
QUESTION 8
You are developing an application by using C#. You provide a public key to the development team during development.
You need to specify that the assembly is not fully signed when it is built.
Which two assembly attributes should you include in the source code? (Each correct answer presents part of the
solution. Choose two.)
A. AssemblyFlagsAttribute
B. AssemblyKeyFileAttribute
C. AssemblyConfigurationAttribute
D. AssemblyDelaySignAttribute
Correct Answer: BD
*
AssemblyDelaySignAttribute
Specifies that the assembly is not fully signed when created.
*
The following code example shows the use of the AssemblyDelaySignAttribute attribute with the
AssemblyKeyFileAttribute.
using System;
using System.Reflection;
[assembly:AssemblyKeyFileAttribute(“TestPublicKey.snk”)] [assembly:AssemblyDelaySignAttribute(true)]
namespace DelaySign
{
public class Test { }
}
Reference: http://msdn.microsoft.com/en-us/library/t07a3dye(v=vs.110).aspx
QUESTION 9
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 employeesList = new List();
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
Correct Answer: B
Explanation: public static IEnumerable Page(IEnumerable source, int page, int pageSize) { return source.Skip((page ?1)
* pageSize).Take(pageSize); }
if page 1 means it skips 0 and take the pageSize if page 2 means it skips first page and take the 2nd page.
QUESTION 10
You have a collection of Product objects named products. Each Product has a category.
You need to determine the longest name for each category.
You write the following code.
Which keyword should you use for Target 1?
A. Group
B. Where
C. Aggregate
D. Select
Correct Answer: B
QUESTION 11
You are creating a console application by using C#.
You need to access the assembly found in the file named car.dll.
Which code segment should you use?
A. Assembly.Load();
B. Assembly.GetExecutingAssembly();
C. This.GetType();
D. Assembly.LoadFile(“car.dll”);
Correct Answer: D
Assembly.LoadFile – Loads the contents of an assembly file on the specified path. http://msdn.microsoft.com/en-us/library/b61s44e8.aspx
QUESTION 12
DRAG DROP
You have the following code.
You need to store the SHA1 hash value of MessageString in a variable named HashValue.
Which code should you use? Develop the solution by selecting and arranging the required code blocks in the correct
order. You may not need all of the code blocks.
Select and Place:
Correct Answer:
QUESTION 13
DRAG DROP
You are creating a method by using C#. The method will accept three strings as parameters. The parameters are
named string1, string2, and string3. The parameter values range from 5,000 to 15,000 characters.
The method will have the following signature.
You need to ensure that StringCompare only returns true if string1 concatenated to string2 is equal to string3. The
comparison must be case-insensitive. The solution must ensure that StringCompare executes as quickly as possible.
Which three code blocks should you use to develop the solution? To answer, move the appropriate code blocks from
the list of code blocks to the answer area and arrange them in the correct order.
NOTE: Each correct selection is worth one point.
Select and Place:
Correct Answer:
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