计算机网络基础:
https://blog.csdn.net/qq_32534441/article/details/88660598
物理层和信道复用(频分、时分、码分)技术:
https://blog.csdn.net/qq_32534441/article/details/88659827
CSMA/CD 及其二进制指数退避算法:
https://blog.csdn.net/qq_32534441/article/details/88659857
IP、TCP、UDP首部详解:
https://blog.csdn.net/qq_32534441/article/details/88680619
IP数据包格式:
https://blog.csdn.net/qq_32534441/article/details/88659878