The interview was easy, but I did not prepare some DSA topics, so I couldn't clear it. I would suggest first covering the breadth and then the depth.

Don't leave any topic uncovered. Have a basic understanding of each topic and practice some standard questions.

They started with a quick introduction about themselves (there were two interviewees) and then asked me to introduce myself.

Next, they asked a very basic question based on my project: the difference between authentication and authorization.

Then, they moved on to Data Structures and Algorithms (DSA).

The first DSA question was to find the Top K Elements from an array.

The next question was to implement pow(x, n).