Which of the following has the smallest default maximum physical receive packet size?

the smallest default maximum physical receive packet size among the options is D) Ethernet. Ethernet is a widely used networking technology that was first standardized in the 1980s. It has evolved over the years and is now the dominant networking technology for local area networks (LANs). In its early versions, Ethernet used small packet sizes to reduce the overhead and improve the efficiency of the network. Over time, as hardware and software have improved, Ethernet has been able to support larger packet sizes. Even today, Ethernet networks may use smaller packet sizes for specific applications, such as real-time multimedia or industrial control systems, where small, reliable packets are preferred over large packets with the potential for errors.