This is one of the asked WCF interview questions during the interview. So one proceed answer as the following: -
For WCF REST we need to use WebHttpBinding. WebhttpBinding is enabled by as shown in the below code snippet.
<endpointBehaviors>
<behavior name="NewBehavior0">
<webHttp />
</behavior>
</endpointBehaviors>
Also see our following video on explanation of REST: -