Online Test Knowledge of .Net Framework 4.0 Skills

What result will you get when you run the following LINQ query in Asp.Net framework 4.0?

List<string> alphabets = new List<string>() { "whats", "new", "in", "aspnet" };   

var alphabetsquery = from alphabet in alphabets select alphabet.Substring(0, 1);   

foreach (var alpha in alphabetsquery)   

{     

Response.Write(alpha);   

}

1. Wnia
2. Whats
3. Whatsnewinaspnet
4. aspnetinnewwhats

Answer: Answer is a

 0 Comments

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Which of the following LINQ queries will you use to find the words whose length is three via displaying the result in capital letter in Asp.Net framework 4.0?

1. var query = from word in wordsgroup word.ToUpper() by word.Length into grorderby gr.Keyselect new { Length =3, Words = gr };
2. var query = from word in wordswhere word.Length==3group word.ToUpper() by word.Length into grorderby gr.Keyselect new { Length = gr.Key, Words = gr };
3. var query = words.GroupBy(w => w.Length, w => w.ToUpper()).Select(g => new { Length = g.Key, Words = g }).OrderBy(o => o.Length);

Answer: Answer is b

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Which of the following is NOT a valid data source control in Asp.Net framework 4.0?

1. LinqDataSource
2. XmlDataSource
3. AccessDataSource
4. EntityDataSource
5. All of the above are valid data sources

Answer: Answer is e

Further Reading:

Useful resources,Data Source Controls

 0 Comments

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Suppose you want to eliminate duplicate elements from the array

int[] source = { 7, 4, 1, 3, 9, 8, 6, 7, 2, 1, 8, 15, 8, 23} and sort the elements in descending order using LINQ in Asp.Net framework 4.0. Which of the following statements can you use?

1. var result = (from s in source orderby s select distinct s).Descending();
2. var result = (from s in source orderby s descending select s).Distinct();
3. var result = select distinct s from s in source sortby s descending;
4. var result = from s in source orderby s descending group p by s select s;

Answer: Answer is b

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Consider the following code snippet:

namespace ExtensionMethods
{
public static class NumericExtensionMethods
{
  public static bool IsNumeric(this string s)
  {
    float output;
    return float.TryParse(s, out output);
  }
}
}

After adding the namespace, how will you call the ExtensionMethod on the string if your string variable is defined as:
string test="4";

1. test.IsNumeric();
2. ExtensionMethods.NumericExtensionMethods.IsNumeric();
3. NumericExtensionMethods m = new NumericExtensionMethods();m.IsNumeric(test);
4. None of the above

Answer: Answer is a

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What is a Decorator in WPF of Asp.Net framework 4.0?

1. It is used to add functional handles to elements or provide state information about a control
2. It is the base class for elements that apply effects onto or around a single child element, such as Border or Viewbox
3. It provides a set of services that can be used to extend the functionality of a common language runtime property.
4. It is a property with the exception that its value cannot be set outside the class that declared the read-only property

Answer: Answer is b

Further Reading:

Useful resources,Decorator

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How will you display the view data in the view of an ASP.NET MVC Application?

1. <%: ViewData["CurrentTime"] %>
2. <%=ViewData["CurrentTime"] %>
3. %ViewData["CurrentTime"] %

Answer: Answer is b

Further Reading:

Useful resources,Passing ViewData from Controllers to Views

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Which of the following is NOT a valid WPF Localizability attribute in Asp.Net framework 4.0?

1. Readability
2. Modifiability
3. Category
4. Both a and b
5. All of the above are Localizability attributes

Answer: Answer is e

Further Reading:

Useful resources,Localization Attributes and Comments

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Suppose your WCF service root URL is "http://examples.svc". What will be the response when you request a WCF data service URL with a $skip system query option, as shown below, in Asp.Net framework 4.0?

1. The response will be the first two product entries from the collection of all products after sorting the collection in descending order of Rating.
2. The response will be the third and fourth product entries from the collection of all products after sorting the collection in ascending order of Rating.
3. The response will be the second and third product entries from the collection of all products after sorting the collection in descending order of Rating.

Answer: Answer is b

Further Reading:

Useful resources,Accessing Data Service Resources

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What result will you get when you run the following LINQ query in Asp.Net framework 4.0?

var scoreRecords = new[] { new {Name = "Alice", Score = 50},
    new {Name = "Bob" , Score = 40},
    new {Name = "Cathy", Score = 45}
  };

var scoreRecordsDict = scoreRecords.ToDictionary(sr => sr.Name);

Response.Write(scoreRecordsDict["BoB"]);

1. { Name = Bob}
2. { Name = Bob, Score = 40 }
3. Name = Bob
4. None of the above

Answer: Answer is d

Further Reading:

Useful resources, It will report error “The given key was not present in the dictionary.”

Which of the following is NOT a valid QueryExtender filter option in Asp.Net framework 4.0?

1. SearchExpression
2. RangeExpression
3. OrderByExpression
4. All of the above are valid QueryExtender filter options

Answer: Answer is d

Further Reading:

Useful resources,QueryExtender

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Which of the following arrays will be returned as result when you run the following LINQ query in Asp.Net framework 4.0?

object[] varnumbers = { null, 1.0, "two", 3, "four", 5, "six", 7.0 };

var doubles = varnumbers.OfType();

foreach (var d in doubles)
{
    Response.Write(d);
}

1. 1, 7
2. Null
3. two, four, six
4. null, 1.0, "two", 3, "four", 5, "six", 7.0

Answer: Answer is a

 0 Comments

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How can you get the name of the current controller and action in an ASP.NET MVC view?

1. Using the OnActionExecuted method
2. Using the OnResultExecuted method
3. Using the OnResultExecuting method
4. Using the OnActionExecuting method

Answer: Answer is a

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Which of the following classes of System.Windows.Media namespace provides rendering support in WPF which includes hit testing, coordinate transformation, and bounding box calculations in Asp.Net framework 4.0?

1. HitTestResult
2. Visual
3. Colors
4. Brush

Answer: Answer is b

Further Reading:

Useful resources, Visual Class

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What is DLR in Asp.Net framework 4.0?

1. It defines the common types that are supported by the languages which are compatible with the .Net framework.
2. It represents the data types of different languages in a specific format specification
3. It is a programming language that manages the execution of programs written in any of several supported languages, allowing them to share common object-oriented classes written in any of the languages
4. It is a runtime environment that adds a set of services for dynamic languages to the common language runtime

Answer: Answer is d

Further Reading:

Useful resources,Dynamic Language Runtime

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Which of the following pieces of information is provided by the WCF service contract in Asp.Net framework 4.0?

1. The grouping of operations in a service
2. The location of the operations
3. The specific protocols and serialization formats that are used to support successful communication with the service
4. All of the above

Answer: Answer is d

Further Reading:

Useful resources,Designing and Implementing Services

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Suppose your site has a page called Index.aspx that you no longer use. Search engines may keep requesting this page. Which of the following method will you add to the CodeBehind file of Index.aspx that will send requests (including search engine requests) to Default.aspx in Asp.Net framework 4.0?

1. Server.Transfer
2. Response.Redirect
3. Response.RedirectPermanent
4. Server.Execute

Answer: Answer is c

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In WCF, what is the significance of the ReceiveRetryCount property of a Poison message in Asp.Net framework 4.0?

1. It is an integer value that indicates the maximum number of times to retry delivery of a message from the application queue to the application
2. It is an integer value that indicates the maximum number of retry cycles
3. It is the time delay between retry cycles

Answer: Answer is a

Further Reading:

Useful resources,Poison Message

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Which of the following OData system query options is used to determine the maximum number of records to be returned in Asp.Net framework 4.0?

1. $top
2. $filter
3. $select
4. $expand

Answer: Answer is a

Further Reading:

Useful resources,OData System Query

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Which of the following statements is correct for WSHttpBinding of WCF in Asp.Net framework 4.0?

1. It is a secure and interoperable binding that is suitable for non-duplex service contracts
2. It is a secure and interoperable binding that is suitable for duplex service contracts or communication through SOAP intermediaries
3. It is a secure and optimized binding suitable for cross-machine communication between WCF applications
4. It is a queued binding that is suitable for cross-machine communication between WCF applications

Answer: Answer is a

Further Reading:

Useful resources,wsHttpBinding

What is the purpose of the System.Windows.Data namespace in Asp.Net framework 4.0?

1. Using System.Windows.Data namespace, you can integrate rich media, including drawings, text, and audio/video content in Windows Presentation Foundation applications
2. It contains classes used for binding properties to data sources, data source provider classes, and data-specific implementations of collections and views
3. It provides the types that support navigation, including navigating between windows and navigation journaling
4. It contains classes for creating windows-based applications that take full advantage of the rich user interface features available in the Microsoft Windows operating system

Answer: Answer is b

Further Reading:

Useful resources,System.Windows.Data Namespace

 0 Comments

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How will you implement the logic for the following scenario in Asp.Net framework 4.0?

Suppose you have a GridView with paging enabled. You select the third row on page 1 and then move to page 2. Nothing is selected on page 2. When you move back to page 1, the third row should still be selected.

1. Set the GridView DataKeyNames property
2. Set the GridView EnablePersistedSelection property to true
3. Set the Gridview PagerSettings-Mode property
4. It is not possible to implement the given logic for the scenario described above

Answer: Answer is b

Further Reading:

Useful resources,GridView.EnablePersistedSelection Property

 0 Comments

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How will you count the odd numbers from the array shown below using LINQ in Asp.Net framework 4.0?

int[]numbers={5,4,1,3,9,8,6,7,2,0};

1. int findoddNumbers = number.Count(n => n % 2 == 1);
2. int findoddNumbers = number.Count( n % 2 == 1);
3. int findoddNumbers = (from number in numberswhere numbers%2==1select Count());
4. int findoddNumbers = (from number in numberswhere number%2==1select numbers).Count();

Answer: Answer is d

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How many columns can you select by $orderby OData system query option in Asp.Net Framework 4.0?

1. 5
2. 12
3. 20
4. 1. infinite

Answer: Answer is b

Further Reading:

Useful resources, OData System Query Options

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Which of the following is the correct way to expand the size of application URLs in Asp.Net framework 4.0?

1. <httpModules maxRequestPathLength="260" maxQueryStringLength="2048" />
2. <httpRuntime maxRequestPathLength="260" maxQueryStringLength="2048" />
3. None of the above

Answer: Answer is b

Further Reading:

Useful resources,What's New in ASP.NET 4

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How can you determine, at runtime, if your application is running in the 64-bit version of Asp.Net framework 4.0?

1. Check IntPtr.Size property for a value of 8.
2. Call the Environment.GetEnvironmentVariable method and pass in the string "Platform" as an argument. Check for a return value of "x64".
3. Call the WOW64 emulator method Isx64() and check the boolean return value.

Answer: Answer is a

Further Reading:

Useful resources,deployment for both x86 and x64 environments

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What is default format used to represent data returned in an ADO.NET Data Services response in Asp.Net framework 4.0?

1. XAML
2. SOAP
3. Atom
4. WSDL

Answer: Answer is c

Further Reading:

Useful resources,ADO.NET Data Services

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Which of the following ASP.NET MVC namespaces includes the classes that support forms, input controls, links, partial views, and validation in Asp.Net Framework 4.0?

1. System.Web.Mvc
2. System.Web.Mvc.Async
3. System.Web.Mvc. Html
4. System.Web.Mvc.Sync

Answer: Answer is c

Further Reading:

Useful resources,System.Web.Mvc.Html Namespace

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What is the function of WCF Data contracts in Asp.Net framework 4.0?

1. They define, for each parameter or return type, what data is serialized to be exchanged
2. They define which operations the client can perform on the service
3. They define which errors are raised by the service, and how the service handles and propagates errors to its clients

Answer: Answer is a

Further Reading:

Useful resources,Data Contracts

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Which of the following statements is correct for the Bubbling routing strategies used by the routing events in WPF in Asp.Net framework 4.0?

1. This event is first raised on the root, then on each element down the tree until the source element is reached.
2. This event is only raised on the source element. It will have the same behavior as a plain .NET event, except that such events can still participate in mechanisms specific to routed events such as event triggers
3. This event is first raised on the source element, then on each element up the tree until the root is reached
4. None of the above

Answer: Answer is c

Further Reading:

Useful resources,Routed Events Overview

Which of the following is the correct way to expand the size of application URLs in Asp.Net framework 4.0?

1. <httpModules maxRequestPathLength="260" maxQueryStringLength="2048" />
2. <httpRuntime maxRequestPathLength="260" maxQueryStringLength="2048" />
3. <httpHandlers maxRequestPathLength="260" maxQueryStringLength="2048" />
4. None of the above

Answer: Answer is b

Further Reading:

Useful resources,What's New in ASP.NET 4

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How is data passed from controllers to views in an ASP.NET MVC Application?

1. Using ViewData
2. Using ViewState
3. Using Sessions
4. Using Cookies

Answer: Answer is a

 0 Comments

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How do you add MetaDescription to your web page in Asp.Net framework 4.0?

1. HtmlMeta meta2 = new HtmlMeta();
   meta2.Name = "description";
   meta2.Content = "add meta description";
   Page.Header.Controls.Add(HtmlMeta ); 
   

2. Page.MetaDescription
3. Both a and b are correct.
4. None of the above

Answer: Answer is c

Further Reading:

Useful resources, add meta tag to ASP.Net content page

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Which of the following statements is correct for ASP.NET MVC Routing in Asp.Net Framework 4.0?

1. It is used to match the incoming requests and to map them to a controller action
2. It is used to construct the outgoing URLs which correspond to controller actions
3. Both a and b are correct

Answer: Answer is c

Further Reading:

Useful resources,URL Routing

 0 Comments

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What result will you get when you run the following LINQ query in .Net framework 4.0?

var scoreRecords = new[] { new {Name = "Alice", Score = 50},
    new {Name = "Bob" , Score = 40},
    new {Name = "Cathy", Score = 45}
};

var scoreRecordsDict = scoreRecords.ToDictionary(sr =>sr.Name);

Response.Write(scoreRecordsDict["Bob"]);

1. { Name = Bob}
2. { Name = Bob, Score = 40 }
3. Name = Bob
4. None of the above

Answer: Answer is b

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How will you count the odd numbers from the array shown below using LINQ in .Net framework 4.0?

int[]numbers={5,4,1,3,9,8,6,7,2,0};

1. int findoddNumbers = numbers.Count(n => n % 2 == 1);
2. int findoddNumbers = numbers.Count( n % 2 == 1);
3. int findoddNumbers = (from number in numbers where numbers%2==1 select Count());
4. int findoddNumbers = (from number in numbers where number%2==1 select numbers).Count();

Answer: Answer is a, d