What should I know about computer networks before joining an MCA?

Computer networks explain how devices and systems communicate. Topics such as TCP/IP, routing, switching, DNS and network layers give MCA students a foundation for software and infrastructure roles. When preparing for an IT role, be ready to explain how computer networks works and where you would use it in a real application. This point is specifically relevant to the computer networks aspect of MCA study. For this specific question about computer networks, the practical takeaway is to relate the concept to your own MCA learning goal. In other words, this guidance addresses: What should I know about computer networks before joining an MCA?