Tip 1 : Prepare OS, DBMS and OOPs also
Tip 2 : Do Competitive Coding Contest from CodeForces.
Tip 3 : Do leetcode 2 months before interviews.
Tip 1 : Have some good coding profiles on various platforms
Tip 2 : Mention some projects or past experience relevant to your stream
I applied DFS with memorization and it was optimized approach with O(n) time complexity.