How does blockchain work in an online MCA?

Blockchain is a distributed record technology in which transactions can be stored in linked, tamper-evident records. MCA students interested in the area should understand distributed systems, consensus and smart-contract concepts. If your target role involves blockchain, include at least one demonstrable project rather than mentioning the topic only as a skill. This point is specifically relevant to the blockchain aspect of MCA study. For this specific question about blockchain, the practical takeaway is to relate the concept to your own MCA learning goal.