OnMobile Senior Java Developer interview questions

So the interview was a phone screening. I’m not sure what the interviewer was expecting but she kept on asking me about technologies/ tools I used in my project, where and what tags are to be written to configure something in the files, the syntax of the hibernate configuration file, commands for building a project in maven, etc. On top of this she asked me to tell a solution for a program as well as reduce its complexity on call. I’m not sure why she kept on asking me questions of such nature. Judging me by asking such questions, apart from my knowledge on my core domain or the work done in my project, was a bit odd. Also she was confused about the internal working of hash map herself and told me that if a key is same then the node will get added instead of replacing the old value in the singly linked list. I don’t know from when a hash map started allowing duplicate key. After all this, HR gave me a feedback saying they need more experienced guys for the job as if the ones present there are not good enough for the job.