When you are called for interview, you will be expected to give a technical presentation based on some technical materials that you are given to study for half an hour. During the presentation, you will be asked of some technical questions, and evaluate how good are you in handling such questions.

Need to prepare in advance the technical slides and present it. Every questions comes from that slides. Be prepared on the softskills. If cant answer the question just admit it dont go further and make your own answer