Which is the default mode for Instancing in WCF

Ans) PerCall

Which protocol is used for platform-independent communication in WCF

Ans) SOAP(Simple Object Access Protocal) , which is directly supported from WCF

Which is Default Message Exchange Pattern(MEP) in WCF

Ans) Request/Response

Which NameSpace is required in a class to use DataContract or DataMember attribute for a class or Properties

using System.Runtime.Serilization; 

can we have multiple endpoints with the same address in WCF

 Ans) NO

Does BasicHttpBinding supports HTTPS in WCF

Ans) Yes

Is SOAP envelope created while using WebHttpBinding in WCF

Ans) NO