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Online Test DotNet 3.5 using C#

  1. They can be derived from any reference type.

  2. Two anonymous types with the same named parameters in the same order declared in different classes have the same type.

  3. Anonymous types can have methods

  4. All properties of an anonymous type are read/write

Answer: Answer is b
Further Reading:

If two or more anonymous object initializers in an assembly specify a sequence of properties that are in the same order and that have the same names and types, the compiler treats the objects as instances of the same type. They share the same compiler-generated type information.Anonymous types contain one or more public read-only properties. No other kinds of class members, such as methods or events, are valid.Anonymous types are class types that derive directly from object, and that cannot be cast to any type except object. From the perspective of the common language runtime, an anonymous type is no different from any other reference type. Useful resources, Anonymous Types


  1. The connection to the database must remain valid for the life of the data objects

  2. All tables in a dataset must come from the same database.

  3. A given instance of a DataTable can be in only one DataSet

  4. Changes made to multiple tables within a DataSet can easily be extracted to a new DataSet which contains only the changes

  5. Content from multiple DataSets can easily be combined into a single DataSet that contains the net result of all changes.

Answer: Answer is d, e
Further Reading:

Useful resources,Dataset,   Datatable, multiple database table in singe dataset.


class Sample
{
  public Sample(int x)
  {
  }
}
  1. public Sample() : this(1) { }

  2. public Sample() : Sample(1) {}

  3. Both of the above

  4. One class constructor can not directly access another constructor

Answer: Answer is a
Further Reading:

Useful resources, C# Constructors


  1. WS-Addressing

  2. WS-MetadataExchange

  3. WS-Security

  4. WS-Atomic Transaction

  5. All of the above

Answer: Answer is e
Further Reading:

Useful resources, WCF


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