Tesco Software Engineer interview questions

Applied online, did some tests, and had a telephone interview. The interview asked many technical questions, despite the fact that the ad for the role mentioned that past experience was not required. Questions asked included: What is the best language to use for the front and back end of a mobile app? What languages could be used to make the mobile app? What problems might there be when moving everything over into the cloud? How might you protect the user information?