Is it possible for two CAN nodes to send the same identifier simultaneously?

Keeping your answers to questions brief and to the point will help you remain consistent throughout the interview. Interviewers will always ask a follow-up question if they want you to expand on your answer. Doing this also helps keep the interview on track and enables the interviewer to move on to their next question if they do not need any additional information.

"No, it is not possible for two CAN nodes to send the same identifier at the same time. The CAN system's arbitration function prevents this. If allowed to happen, one of the transmitting nodes will detect that its message has been distorted outside the arbitration field. This is prevented by the error handling of the CAN which will turn off the bus for one of the transmitting nodes, known as the bus-off mode."