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What are different layers of ADO.Net?

Posted By :Subhransu Sekhar Jena     Posted Date :September 29, 2014    Points :40   Category :ADO.Net 
Presentation Layer
Business Logic Layer
Database Access Layer

You can also find related Interview Question to What are different layers of ADO.Net?  below: 

What are the different layers of OSI model?

OSI model has 7 layers such as,
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How do you define testing of network layers?

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How many layers of TCP/IP protocol combined of?

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What are the four layers in WCF architecture?

SOA based WCF architecture has four layers.

1. Contracts
It describe the WCF message system. This is achieved by three contracts with policies and bindings.
i. Service Contract - Describes the method signature of the service using C# or VB
ii. Data Contract - Enables .NET types to be in XML
iii. Message Contract - Defines the structure os the SOAP message exchanged between the service and client
iv. Policies and Bindings - Defines the security level required by the clients

2. Service Runtime
This includes the behaviors that occur when service is running.

3. Messaging
This layer contains the channels that process messages and operate on messages and message headers

4. Hosting
Describes the ways in which WCF service can be hosted.

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