Knowledge of .Net Framework 4.0 Skills Test

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

Answers: • It is used to match the incoming requests and to map them to a controller action.

2. 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";

Answers: • test.IsNumeric();

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

Answers: • It contains classes used for binding properties to data sources, data source provider classes, and data-specific implementations of collections and views.

4. 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 .Net framework 4.0. Which of the following statements can you use?

Answers: • var result = (from s in source orderby s descending select s).Distinct();

5. 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 .Net framework 4.0?

Answers: • Visual

6. 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};