Google has launched a new tool designed to help people prepare for job interviews.The system, called Interview Warmup, is powered by artificial intelligence (AI) methods.The tool creates interview test questions related to several major technology fields.These include information technology (IT) and support, project management, data analytics and online sales and marketing.The tool was created as part of Google's efforts to develop "conversational AI" systems.These systems use messaging technologies and voice recognition to permit users to interact with computers and devices in more natural ways.Google recently launched Interview Warmup to the public for free.Users first choose the field they are interested in for a practice interview.The process involves users typing or speaking their answers into the system after each question is presented.