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Updated: Nov 13, 2026
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Microsoft 70-503 Exam Overview:
| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation |
| Exam Number: | 70-503 |
| Available Languages: | German, French, Spanish, Japanese, Chinese (Simplified), English |
| Certificate Validity Period: | Retired, no active validity; .NET 3.5 legacy certification |
| Exam Format: | Case study, Scenario-based questions, Multiple-choice |
| Related Certifications: | Microsoft Certified Professional (MCP) MCPD: Enterprise Application Developer 3.5 |
| Exam Price: | USD 125 |
| Exam Duration: | 90 minutes |
| Passing Score: | 700 out of 1000 |
| Real Exam Qty: | 50-60 |
| Recommended Training: | MCTS Self-Paced Training Kit (Exam 70-503) Official Microsoft Learning Course 6461 |
| Exam Registration: | Original Registration (Retired) |
| Sample Questions: | Microsoft 70-503 Sample Questions |
| Exam Way: | Onsite at Prometric test centers; no longer available for registration as exam is retired |
| Pre Condition: | No mandatory prerequisites; recommended 1+ year experience with .NET Framework 3.5, Visual Studio 2008, and distributed application development; Exam 70-536 recommended for full MCTS path |
| Official Syllabus URL: | https://learn.microsoft.com/en-us/archive/technet-wiki/8120.exam-70-503-ts-microsoft-net-3-5-windows-communication-foundation |
Microsoft 70-503 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Creating Services | 19% | - Define data contracts - Define service contracts - Process generic messages - Define operation contracts - Define message contracts |
| Topic 2: Instrumenting and Administering Services | 11% | - Implement service tracing - Enable message logging - Implement service throttling - Configure performance counters |
| Topic 3: Securing Services | 18% | - Configure message security - Configure authorization - Configure authentication - Configure transport security |
| Topic 4: Consuming Services | 18% | - Configure client endpoints and bindings - Create service proxies - Handle communication exceptions - Implement asynchronous calls |
| Topic 5: Exposing and Configuring Services | 21% | - Configure bindings - Configure service endpoints - Configure service hosting - Configure service behaviors |
| Topic 6: Hosting and Managing Services | 13% | - Manage service instances and concurrency - Host services in managed applications - Create custom behaviors - Host services in IIS/WAS |
Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation Sample Questions:
You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You set the logKnownPii attribute to true for the only trace source in the app.config file. You discover that the personal identifiable information (PII) is not logged.
You need to ensure that the PII is logged.
What should you do?
- A. Disable encryption of the AppSettings element in the web.config file.
- B. Set the enableLoggingKnownPii attribute to true in the app.config file.
- C. Set the enableLoggingKnownPii attribute to true in the machine.config file.
- D. Set the logKnownPii attribute to true in the web.config file.
Correct Answer: C 🗳️
You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You create the following service definition.
<ServiceContractQ> _ Public Interface IMyService ... End Interface
You need to custom manage the lifetime of the session.
Which service implementation should you use?
- A. <ServiceBehavior(UseSynchronizationContext:=True)> _
Public Class Servicelmp1
...
End Class - B. <ServiceBehavior(AutomaticSessionShutdown:=True)> _
Public Class Servicelmp1
...
End Class - C. <ServiceBehavior(AutomaticSessionShutdown:=False)> _
Public Class Servicelmp1
...
End Class - D. <ServiceBehavior(UseSynchronizationContext:=False)> _
Public Class ServicelmpID
...
End Class
Correct Answer: D 🗳️
You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service will contain an enumeration named OrderState.
The OrderState enumeration will contain the following four values:
The client application must be able to set the state of an Order entity to only the following two values:
You need to create the data contract for OrderState. Which code segment should you use?
- A. Option D
- B. Option B
- C. Option C
- D. Option A
Correct Answer: C 🗳️
You are creating a Windows Communication Foundation service by using Microsoft .NET
Framework 3.5. The service has a contract named IMyService.
You need to ensure that the service uses an XMLSerializer object.
Which code segment should you use?
- A. Option D
- B. Option B
- C. Option C
- D. Option A
Correct Answer: D 🗳️
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 B
- C. Option C
- D. Option A
Correct Answer: A 🗳️
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