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

Exam Code: 70-503

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

Updated: Oct 16, 2026

Q & A: 270 Questions and Answers

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Microsoft 70-503 Exam Syllabus Topics:

Section	Objectives
Topic 1: Windows Communication Foundation Fundamentals	- Service contracts, data contracts, and message contracts - Understanding WCF architecture and programming model - Bindings, endpoints, and host configuration
Topic 2: Security, Transactions and Reliability	- Reliable messaging and error handling - Configuring security (transport and message level) - Transactions, concurrency and instance management
Topic 3: Service Implementation and Hosting	- Hosting WCF services in managed applications, IIS and WAS - Configuring service behavior and metadata exposure - Implementing service contracts in C# using .NET Framework 3.5
Topic 4: Client Configuration and Communication	- Bindings and interoperability considerations - Creating and configuring WCF client applications - Channel factories and proxy generation

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

Question #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 create an endpoint for the service contract in the application configuration file.
Which endpoint should you use?

A. <endpointaddress="" binding="basicHttpBinding" contract="HyServices.HyService"/>
B. <endpointaddress="" binding="basicHttpBinding" contract="HyServices.ServiceConfig"/>
C. <endpointaddress="" binding="basicHttpBinding" contract="HyService"/>
D. <endpointaddress="" binding="basicHttpBinding" contract="ServiceConfig"/>

Reveal Solution Discussion 0

Correct Answer: D 🗳️

Question #2

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You add the following code fragment to the app.config file for the service.

You need to enable personal identifiable information (PII) logging for the second trace source.
What should you do?

A. Set the logKnownPii attribute to true for the first source in the code fragment.
B. Rename the second source listener name to Pii.
C. Set the logKnownPii attribute to false for the first source in the code fragment.
D. Set the logKnownPii attribute to true for the second source in the code fragment.

Reveal Solution Discussion 0

Correct Answer: A 🗳️

Question #3

You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5.
You add the following code segment to the service.

You add the following code segment to the client application.
01 Public Function PerformCalculations(ByVal numberl As Double, _ ByVal number2 As Double) As Double
03 End Function
You need to ensure that the DisposeCalculator operation is always called.
Which code segment should you insert at line 02?

A. Option C
B. Option A
C. Option D
D. Option B

Reveal Solution Discussion 0

Correct Answer: C 🗳️

Question #4

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

You need to ensure that concurrent calls are allowed on the service instance.
Which code segment should you insert at line 06?

A. <ServiceBehavior(ConcurrencyMode:=ConcurrencyMode.Multiple, _ ReleaseServicelnstanceOnTransactionComplete:=True)> _
B. <ServiceBehavior(ConcurrencyMode:=ConcurrencyMode.Reentrant, _ ReleaseServicelnstanceOnTransactionComplete:=True)> _
C. <ServiceBehavior(ConcurrencyMode:=ConcurrencyMode.Reentrant, _ ReleaseServicelnstanceOnTransactionComplete:=False)> _
D. <ServiceBehavior(ConcurrencyMode:=ConcurrencyMode.Multiple, _ ReleaseServicelnstanceOnTransactionComplete:=False)> _

Reveal Solution Discussion 0

Correct Answer: D 🗳️

Question #5

DRAG DROP
You are creating an application in Windows Communication Foundation (WCF) by using Microsoft.NET Framework 3.5.
You need to ensure that the client application communicates with the service by using a duplex contract.
Which five actions should you perform? (To answer, move the five appropriate actions from the list of actions to the answer area, and arrange them in the correct order.)