MCTS Windows Communication Foundation (WCF)

Question 1

In WCF, what does the ABC acronym stand for when describing an endpoint?

Accepted Answer

Address, Binding, Contract

Answer

Every WCF endpoint is defined by its Address (where it is), Binding (how to communicate), and Contract (what operations are available).

Question 2

Which WCF binding is optimized for cross-machine communication over TCP and is NOT suitable for internet-facing services?

Accepted Answer

NetTcpBinding

Answer

NetTcpBinding uses the TCP transport for efficient intranet communication but is not suitable for internet scenarios because TCP port 808 is typically blocked by firewalls.

Question 3

Which .NET attribute marks an interface as a WCF service contract?

Accepted Answer

[ServiceContract]

Answer

[ServiceContract] is applied to an interface or class to declare it as a WCF service contract, defining the overall service.

Question 4

What is the default message encoding used by BasicHttpBinding?

Accepted Answer

Text/XML

Answer

BasicHttpBinding uses text-encoded XML by default, ensuring interoperability with non-WCF SOAP clients.

Question 5

Which WCF service behavior must be enabled to allow clients to retrieve the service's WSDL metadata?

Accepted Answer

serviceMetadata

Answer

The serviceMetadata behavior, with httpGetEnabled or httpsGetEnabled set to true, exposes the WSDL so clients can generate proxies.

(MCTS) Microsoft Certified Technology Specialist Practice Test

(MCTS) Microsoft Certified Technology Specialist Practice Test

MCTS Windows Communication Foundation (WCF)