答案:【计分规则】: The data is transferred from the application layer to the next layer, which is encapsulated layer by layer, and each layer has a different name: (2 points)After the transmission layer, the TCP header is added to form the data segment (2points),Through the network layer, plus the IP header, data packets are formed (2points),After the data link layer, MAC header and a FCS verification data frame are added(2 points), the encapsulation is completed, and then the physical layer is transmitted through bit.(2 points)Similar answers can also be scored.