Technical Aptitude is usually the 1st round in both on campus as well off campus placements. Prepare well for it or you won’t get to the interview rounds.

1. Aptitude:

This is the best resource for aptitude: Click Here

For More refer this: Click Here

2. Core subjects/ CS Fundamentals:

Although we all learn these subjects in college but for placements you need to learn it in a practical way and not for any written exam.

• OS
• CN
• DBMS

If you are stuck in any concept of core subject you can refer this YouTube playlist: YouTube