TCP/IP communication over Ethernet and FDDI

TCP/IP is the most widely used protocol suite for communication over networks. Ethernet and FDDI are two commonly used LAN technologies. In order to enable TCP/IP communication over Ethernet and FDDI, a network manager is required.

pNA Network Manager

In this case, the correct answer is option C, which is pNA network manager. pNA stands for portable network architecture. It is a network manager that provides the TCP/IP communication over the Ethernet and FDDI. It is a software component that resides between the TCP/IP protocol stack and the network interface driver.

pSOS Kernel

pSOS is a real-time operating system that is commonly used in embedded systems. It provides multitasking support, memory management, and other essential features for embedded systems. However, pSOS kernel alone cannot provide the TCP/IP communication over Ethernet and FDDI.

pSOS MB

pSOS MB is a microkernel-based version of the pSOS operating system. It is designed for use in embedded systems with limited resources. However, like pSOS kernel, pSOS MB alone cannot provide the TCP/IP communication over Ethernet and FDDI.

Conclusion

In summary, pNA network manager is the software component that provides the TCP/IP communication over the Ethernet and FDDI. It is a portable network architecture that resides between the TCP/IP protocol stack and the network interface driver. While pSOS kernel and pSOS MB provide essential features for embedded systems, they do not provide the necessary support for TCP/IP communication over Ethernet and FDDI.