An MCA can open routes into software development, testing, databases, analytics, networking, cybersecurity and other IT functions. Employers will still look at practical skills and experience. A good MCA study plan should leave time for both the theory behind semester 1 and regular implementation practice. This point is specifically relevant to the semester 1 aspect of MCA study. For this specific question about semester 1, the practical takeaway is to relate the concept to your own MCA learning goal.