WCF (Windows Communication Framework) is basically a Microsoft technology for developing distributed and interoperable APPLICATIONS. The program gives you the opportunity to do correspondence via different methods, including MS informing queuing, services, and remote access. It also enables you to communicate with non-Microsoft applications or .NET programs. FORMERLY known as Indigo, it also provides hosting services across all operating systems. WCF services can be hosted in IIS, self-hosted, or through the Windows Activation Service. WCF combines multiple existing .NET technologies, as shown below:

In the following section, we will see what are the most commonly ASKED WCF Interview Questions and Answers for Freshers and EXPERIENCED candidates.