Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation : 70-503

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Exam Code: 70-503

Exam Name: TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation

Updated: Aug 04, 2026

Q & A: 270 Questions and Answers

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Microsoft 70-503 Exam Syllabus Topics:

SectionObjectives
Configuring and Hosting WCF Services- Hosting environments
  • 1. Self-hosting services
    • 2. Windows Activation Service (WAS)
      • 3. IIS hosting
        - Service configuration
        • 1. Endpoints, bindings, and behaviors
          • 2. Configuration via app.config/web.config
            WCF Bindings and Messaging- Bindings
            • 1. BasicHttpBinding, WSHttpBinding, NetTcpBinding
              • 2. Custom bindings
                - Message patterns
                • 1. Request-reply
                  • 2. One-way and duplex communication
                    Designing and Developing WCF Services- Service contracts and data contracts
                    • 1. Design data contracts using DataContract and DataMember
                      • 2. Define service contracts using ServiceContract and OperationContract
                        - Service implementation
                        • 1. Implement service classes
                          • 2. Handle concurrency and instancing modes
                            Security in WCF Services- Secure communication
                            • 1. Protection levels and security modes
                              • 2. Certificates and encryption
                                - Authentication and authorization
                                • 1. Windows authentication
                                  • 2. Message and transport security
                                    Client Configuration and Consumption- Service consumption
                                    • 1. Adding service references
                                      • 2. Generating proxies
                                        - Client configuration
                                        • 1. Endpoint configuration
                                          • 2. Handling faults and exceptions

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

                                            1. You are creating a distributed application by using Microsoft .NET Framework 3.5.
                                            The application uses Windows Communication Foundation (WCF).
                                            The distributed application provides point-to-point security.
                                            You need to ensure that the distributed application provides end-to-end security instead of point-to-point security.
                                            Which binding mode should you use?

                                            A) netTcpBinding with Transport security
                                            B) netNamedPipeBinding with Transport security
                                            C) wsHttpBinding with Transport security
                                            D) wsHttpBinding with Message security


                                            2. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service contains the following code segment.

                                            You need to ensure that the service instance is recycled when the transaction is complete.
                                            Which line of code should you insert at line 07?

                                            A) [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.Multiple, TransactionAutoCompleteOnSessionClose=true)]
                                            B) [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.Single)]
                                            C) [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Single, Transact ionAutoCompleteOnSess ionClose=true)]
                                            D) [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.MultipleJ]


                                            3. You create a client application by using Microsoft .NET Framework 3.5. The client application uses a Windows Communication Foundation (WCF) service. You plan to implement inspection handling on the client application and the WCF service. You need to add error handling to the WCF service. What should you do?

                                            A) Modify the BeforeSendRequest method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.
                                            B) Modify the AfterReceiveReply method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.
                                            C) Modify the AfterReceiveRequest method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.
                                            D) Modify the BeforeSendReply method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.


                                            4. 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
                                            Implements IStoreCallback End Class
                                            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 B
                                            B) Option D
                                            C) Option C
                                            D) Option A


                                            5. Your company has a set of e-commerce services that were created by using Microsoft .NET Framework 3.5. The Windows Communication Foundation model was used to create the services.
                                            The services include a catalog and a shopping cart that are deployed to the same physical server. The catalog is a stateless, single-instance service. The shopping cart is a reentrant, per-session service.
                                            The catalog service contains the following code fragment.

                                            The shopping cart service contains the following code fragment.

                                            During peak hours, the number of simultaneous catalog requests increase. This prevents customers from updating their shopping carts. You need to ensure that the customers can update their shopping carts even during peak catalog request traffic.
                                            Which set of code fragments should you use to replace the existing code fragments?

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


                                            Solutions:

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

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