We are struggling hard to find out a useful solution for candidates appearing for interviews that can be used freely. It will be just like a companion and you can refer to it after painstaking the complete array of topics as per the syllabus. Along with clear answers to these queries, we'll also offer some extra advice and helpful tips and bits from our subject matter experts. As part of the interview take an effort to WCF service interview questions also. In order to adequately prepare for any future interview opportunities, you will learn about the various Windows Communication Foundation (WCF) topics on which you have to be proficient well. Success is certain to knock on your door very soon now that you have a more comprehensive understanding of WCF and accept our professional advice and examples. Go through the free resource WCF interview questions for experienced and get the targeted goal. Do not be exiled in the interview.

WCF Applications

WCF is the short form for Windows Communication Foundation. It was created by the Dot Net Foundation and is written in C#.It is acommon tool for utilizing and launching a service-oriented architecture (SOA).In order to support distributed computing where remote consumers are to be serviced, it is designed using the principles of service-oriented architecture. Microsoft created this exclusive software framework and is primarily used with Windows. Till the cross-platform .NET project took its place, it was the Common Language Infrastructure (CLI) implementation that was most widely used. Multiple clients can use the same services at the same time. There is a complex relationship between the services. It is utilized to communicate data as asynchronous messages from one point or service to another. A service endpoint can be part of a continuously available service hosted by IIS, or it can be a service hosted in an application.

Despite this, when the service is hosted, it typically has a WSDL interface (Web Services Description Language) that any WCF client can use to consume the service. The services are important and so the interview candidate should understand the WCF service interview questions also.

Topics to be Concerned

WCF and ASP.NET are configured by default to coexist side by side.As a result, the AppDomain state can be shared between WCF and ASP.NET services. WCF and ASP.NET can both coexist in the same AppDomain, allowing the two frameworks to share AppDomain states such as static variables, events, and so on.

The following are the important topics to be proficient for the WCF interview candidate.

WCF introduction and a description of SOA
WCF Service Application and Client Development
InstanceContext
Environment for Hosting from a Console
Setting in the configuration file
Channel Stacks and Bindings
Various Bindings
Recognizing Data and Service Contracts
Version Tolerance for DataContract
Exceptions and Faults Handling
Message Exchange Patterns
Message Patterns
OneWay Operations
Duplex Pattern
Transactions in WCF
Transactions and Sessions
MSMQ
Microsoft Message Queue
Security in WCF
Messages Encryption Demo
Windows Authentication
SSL and Basic Authentication
Authentication using Membership Provider
Role Based Authentication

The WCF interview questions for experienced is a repository targeted at result-oriented candidates who can read it after comprehending the above topics.

Scrutinize the Interview Questions

Looking into the WCF interview questions for experienced is an important step after the mastery of all topics.

Describe WCF.

WCF serves as a platform for creating distributed businesses and distributing services among various endpoints. Compared to web services, it offers more features. We are able to create service-oriented applications. It also enhances interoperability. It was formerly known as Indigo. The Windows Communication Foundation (WCF) is indeed a programming paradigm for building SOAs. It is used to develop and implement a service that is available to a wide range of clients. It offers a setting in which you can develop a service that can be accessed by clients from different platforms.

What is SOA?

SOA stands for service-oriented architecture. With service-oriented architecture, applications are set up as services during the software development process. Services are nothing but methods that hold the business logic to connect a database or other services. The services should have the following features:

Services provided by an SOA should be independent of one another
The client calling the service shouldn't be impacted by changes to the service.
The services ought to be self-sufficient.
The Web Service Description Language (WSDL) should allow services to define themselves
Services ought to be able to outline their scope of work.
The services should be able to explain to the client every operation it performs, every data type it uses, and every value it will produce.

What does a WCF service contract mean?

Service contract refers to the various mechanisms used to specify for the users including the functionality and specifications. It provides additional information about a service, such as message file formats, physical addresses for operations, and the protocols that clients must use in interacting with the service. Developers define an interface with associated methods that represent a group of service operations in order to create a service contract. Developers then decorate the interface or class with the ServiceContract Attribute to denote that it is a service contract. The OperationContract Attribute is applied to interface methods that belong in the service contract.

Conclusion

WCF (Windows Communication Foundation) is a software framework from Microsoft used for distributed computing, involving remote clients being serviced. It is written in C# and designed using principles of service-oriented architecture. Services communicate data as asynchronous messages between each other. To prepare for interviews, it's important to be proficient in topics such as WCF introduction, SOA, Service Application and Client Development, InstanceContext, Hosting Environment, Configuration Settings, Binding/Channel Stacks, DataContract Version Tolerance, Exceptions, and Faults Handling, Message Exchange and Patterns (OneWay Operations/Duplex Pattern), Transactions & Sessions (MSMQ), Security (Messages Encryption Demo/Windows Authentication/SSL & Basic Authentication/Membership Provider/Role Based Authentication). Have a look into the WCF interview questions for experienced for a better result in the interview.

Author:

Shailendra Chauhan

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