Phenom PDE -1 interview questions

There were two technical rounds in 1st i have been asked medium level array questiona and 2nd round data structures and one HR round and one director round, it was good.

The interview consists of 3 rounds The first 2 rounds were technical. They asked about the fundamentals of ML, a case study and 2 DSA questions. The third one was with the manager. He discussed about experience and projects and DSA questions. Later, when I cleared the rounds. They gave me an offer and when I applied for the notice period, they asked me to sign a bond of 2 years.