- Exam Code: 70-503
- Exam Name: TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation
- Updated: May 31, 2026
- Q & A: 270 Questions and Answers
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1. 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 A
B) Option D
C) Option C
D) Option B
2. 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 the service commits the transaction only when the session is closed.
Which code segment should you use to implement the service?

A) Option A
B) Option D
C) Option C
D) Option B
3. 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.MultipleJ]
B) [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.Multiple, TransactionAutoCompleteOnSessionClose=true)]
C) [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.Single)]
D) [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Single, Transact ionAutoCompleteOnSess ionClose=true)]
4. You create a service by using Microsoft .NET Framework 3.5. You use Windows
Communication Foundation to create the service.
You use the WSHttpBinding binding to prevent tampering of the data. Users report that the
data is unreadable.
You need to troubleshoot the problem by logging the incoming messages. Which code fragment should you use?
A) Option A
B) Option D
C) Option C
D) Option B
5. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5
You write the following code segment.
The implementation of the MyMethod operation must call back the CallbackMethod operation.
You need to ensure that the service meets the following requirements:
Which service implementation should you use?
A) Option A
B) Option D
C) Option C
D) Option B
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: D | Question # 4 Answer: D | Question # 5 Answer: C |
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