Can you please tell me how to get inline or embedded JSON file?

Error:

polyfills.js:3 GET http://localhost:8100/data/questions.json 404 (Not Found)

Folder path:

survey-data.ts

    @Injectable()
    export class SurveyData {

      constructor(public http: Http) {

      }

     getJson(): Observable<any> {
        return this.http.get("data/questions.json") //not working here
          .map(this.extractData)
          .catch(this.handleError);

      }
}

questions.json

{
    "28903218": {
        "type": "group", 
        "prompt": "Cool, thanks! Now tell us about your child's day:", 
        "description": ""
    }, 
}