- Exam Code: 70-503
- Exam Name: TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation
- Updated: Aug 20, 2026
- Q & A: 270 Questions and Answers
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| Section | Objectives |
|---|---|
| Topic 1: Security, Transactions and Reliability | - Reliable messaging and error handling - Configuring security (transport and message level) - Transactions, concurrency and instance management |
| Topic 2: Windows Communication Foundation Fundamentals | - Service contracts, data contracts, and message contracts - Understanding WCF architecture and programming model - Bindings, endpoints, and host configuration |
| Topic 3: Client Configuration and Communication | - Creating and configuring WCF client applications - Bindings and interoperability considerations - Channel factories and proxy generation |
| Topic 4: Service Implementation and Hosting | - Implementing service contracts in C# using .NET Framework 3.5 - Configuring service behavior and metadata exposure - Hosting WCF services in managed applications, IIS and WAS |
1. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You need to configure a single service endpoint with the following logical and physical addresses:
Which configuration setting should you use?
A) Option A
B) Option D
C) Option B
D) Option C
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 A
B) Option D
C) Option B
D) Option C
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(lslnitiating:=False)> _
B) <OperationContract(lsTerminating:=True)> _
C) <OperationContract(lsTerminating:=False)> _
<OperationBehavior( _
ReleaselnstanceMode:=ReleaselnstanceMode.AfterCall>
D) <OperationContract()> _
<OperationBehavior(_
ReleaselnstanceMode:=ReleaselnstanceMode.AfterCall)>_
4. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service contains the following code segment.
<ServiceContract0> _ Public Interface IMyService
<OperationContract(lsOneWay:=True, _ Protectionl_evel:=Protectionl_evel.None)> _ <TransactionFlow(TransactionFlowOption.Allowed)> _ Sub DoSomethingQ End Interface
You need to ensure that the DoSomething operation can participate in transactions.
Which code segment should you use to replace the existing operation contract?
A) <OperationContract(lsOneWay:=True, _ Protectionl_evel:=Protectionl_evel.Sign)> _ <TransactionFlow(TransactionFlowOption.Mandatory)> _ Sub DoSomethingQ
B) <OperationContract(_ Protectionl_evel:=Protectionl_evel.None)> _ <TransactionFlow(TransactionFlowOption.Allowed)> _ Sub DoSomethingO
C) <OperationContract(lsOneWay:=True,_ Protectionl_evel:=Protectionl_evel. EncryptAndSign)> _ <TransactionFlow(TransactionFlowOption.Allowed)> _ Sub DoSomethingQ
D) <OperationContract(_ Protectionl_evel:=Protectionl_evel.EncryptAndSign)> _ <TransactionFlow(TransactionFlowOption.NotAllowed)> _ Sub DoSomethingQ
5. You are creating a Windows Communication Foundation application by using Microsoft .NET Framework 3.5. The application must consume an ATOM 1.0 feed published at http://localhost:8000/BlogService/GetBlog. You write the following code segment. (Line numbers are included for reference only.)
You need to ensure that the application prints the title of the feed.
Which code segment should you insert at the line 02?
A) Dim feed As SyndicationFeed = New SyndicationFeed()
feed.BaseUri = address
B) Dim feed As SyndicationFeed = SyndicationFeed.Load(address)
C) Dim item As Syndicationltem = SyndicationItem.Load(address)
Dim feed As New SyndicationFeed()
feed.Items = New Syndicationltem() {item}
D) Dim item As New SyndicationItem()
item.BaseUri = address
Dim feed As New SyndicationFeed()
feed.Items = New Syndicationltem() {item}
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: B | Question # 5 Answer: B |
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