Final answer:
The IPX protocol resides at the Network layer in both the DoD and OSI models, stands for Internetwork Packet Exchange, and its function is packet routing.
Step-by-step explanation:
The IPX protocol stands for Internetwork Packet Exchange and is used for packet routing. In the context of network models, IPX operates at the Network layer in both the Department of Defense (DoD) model and the Open Systems Interconnection (OSI) model. Since IPX is a network layer protocol, it does not have a port number like transport layer protocols (such as TCP and UDP) do. Therefore, the correct answer to the question is: A) DOD Model: Network, OSI Model: Network, Port#: N/A, Stands for Internetwork Packet Exchange, Function: Packet routing.