Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation : 070-503

  • Exam Code: 070-503
  • Exam Name: TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation
  • Updated: Jun 19, 2026     Q & A: 270 Questions and Answers

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Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation Sample Questions:

1. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You create the following service contract.

You need to ensure that the DoSomething operation is executed by a single thread at a time.
What are two possible service implementations you should use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Option D
B) Option C
C) Option A
D) Option B


2. You are creating a Windows Communication Foundation (WCF) client application by using Microsoft .NET Framework 3.5.
The proxy generated for the WCF service results in the following code segment.

To implement a callback interface, you create the following class in the client application.
public class StoreCallback: IStoreCallback{ }
The client application receives notifications from the service through the callback interface.
You write the following code segment for the client application to use the generated proxy.
(Line numbers are included for reference only.)
02 client.CheckAvailableProducts();
You need to set up duplex communication between the client application and the WCF
service.
Which code segment should you insert at line 01?

A) Option D
B) Option C
C) Option A
D) Option B


3. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You write the following code segment. (Line numbers are included for reference only.)
01 <SetviceContract(SessionMode:=SessionMode.Required)> _
02 Public Interface lOrderManager 04 Sub CloseOrder()
05 End Interface
You need to decorate the operation as the method that closes the current session.
Which code segment should you insert at line 03?

A) <OperationContract()> _
<OperationBehavior(_
ReleaselnstanceMode:=ReleaselnstanceMode.AfterCall)>_
B) <OperationContract(lslnitiating:=False)> _
C) <OperationContract(lsTerminating:=True)> _
D) <OperationContract(lsTerminating:=False)> _
<OperationBehavior( _
ReleaselnstanceMode:=ReleaselnstanceMode.AfterCall>


4. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service has an operation contract named GetMessage.
You write the following code segment to implement the service. (Line numbers are included for reference only.)

You need to send the contents of the File.xml file to a client application by using the SOAP body.
Which code segment should you insert at line 08?

A) Option D
B) Option C
C) Option A
D) Option B


5. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. You create a class named Customer for the WCF service. The Customer class has properties named Id, Name, and BalanceDue.
You plan to convert the Customer class into a data contract.
You need to ensure that only the Id property and the Name property are passed to the client applications.
Which code segment should you use?

A) Option D
B) Option C
C) Option A
D) Option B


Solutions:

Question # 1
Answer: B,D
Question # 2
Answer: A
Question # 3
Answer: C
Question # 4
Answer: A
Question # 5
Answer: D

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