Firstly I gave my introduction and then the interviewee asked me a few Questions from CS fundamentals:

1. What is multi threading
2. Since my preferred language was c++ , so he asked me about the memory architecture in c++ like stack, heap and then extended Questions like what operator is used for dynamic allocation and deallocation
3. What is shallow copy and deep copy I answered all the questions

Then he gave a Question related to LRU cache , there were two functions get(key) and create(key,value) . He asked me which data structures will be used to solve the problem and wanted to discuss about the approach, he didn't ask me to code it . I answered all the questions. Then he gave me a DSA question related to LRU cache . He didn't ask me to code it , he told we will discuss about the data structures used and the approach. There were two operations get(key) which returns the value of the key exist else null pr -1. And a create(key,value) operation which creates the key, value pair. I answered some sub parts of the question but I was not getting what exactly he was asking , so he changed the question and gave me another DSA question: There is a sorted array and a target value, we have to find the count of the target in the array. First I told that we can use a map but then he said to give a more optimal solution then I told we can use binary search and wrote the code and explained to him . Next he showed me 2 codes from implementation of OOPS, each from shallow copy and deep copy. He asked me to tell the output and I answered him with proper explanation. Then he asked if I have any questions. I asked some questions and the interview ended.