MCTS .NET Application Development 2

Question 1

Which .NET class is used to serialize an object to XML format?

Accepted Answer

XmlSerializer

Answer

XmlSerializer converts objects to and from XML using public properties and fields.

Question 2

What is the purpose of the 'using' statement in C# when working with unmanaged resources?

Accepted Answer

It ensures Dispose() is called when the block exits

Answer

The 'using' statement guarantees that Dispose() is called on IDisposable objects even if an exception occurs.

Question 3

In ASP.NET, which HTTP module is responsible for Forms Authentication?

Accepted Answer

FormsAuthenticationModule

Answer

FormsAuthenticationModule intercepts requests and redirects unauthenticated users to the login page.

Question 4

Which collection class in .NET provides O(1) lookup by key?

Accepted Answer

Dictionary<TKey, TValue>

Answer

Dictionary<TKey, TValue> uses a hash table internally, providing constant-time average lookups.

Question 5

What does the 'sealed' keyword prevent in C#?

Accepted Answer

A class from being inherited

Answer

The sealed keyword prevents other classes from deriving from the marked class.

(MCTS) Microsoft Certified Technology Specialist Practice Test