Amazon Software Development Engineer (Computer Vision) interview questions

Initial interview was over the phone. It was more of a personality interview. The interviewer was sociable and only asked a few basic technical questions. Nothing difficult. The second interview was an online coding test. The interviewer on the phone asked me basic questions about computer vision principles which I answered by typing up pseudo code on the screen. I answered some of the questions well, but found it difficult to understand what the interviewer was asking on some of the other questions even after asking for clarification.