Amazon Software Engineer interview questions

1) Why Amazon 2) Background questions (What you did, what research, what challenge). 3) When you click submit, what happened underneath web browser 4) What’s the connection between web browser and server 5) What’s the difference between process and thread 6) In what case using multiple processes and what case using multiple threads. 7) Tell something about tree 8) BFS 9) Writing code, find the number occurs odd times in an array.

I applied for a software engineer position online. I got a phone call from a HR person right away and set up a phone interview. A software developer from the hiring team called me and asked me about my current job. Although I explained that my job was maintaining software (mostly bug fixing), he kept asking me why I wanted to change my job from QA to software development. He then started asking me about algorithms. I wasn't too prepared so I didn't do good.