Nuance Senior Software Engineer interview questions

Applied through employee referral. First round of interview was telephonic. Questions below: 1. Collection, hash map internal working. 2.implemant linked list, write and explain code. 3. Can we directly call .clone() method on the object of some class? Second round of interview was face to face. Questions below: 1. Create hashmap with capacity = 15 and load factor .6 2.can we use protected in interface 3. can we have same method signature in same class, diff is one with static keyword. 4.multithreading questions 5.create your own generic class

Long process, interview was though but fair, the interview was over 3 hours long but the abnormal length of time it took to get tp the offer was grueling, they lost my documents twice and reasked the same questions on the phone a few times