What is the major difference between the local terminal display workstation (LTDW) and the remote terminal display workstation (RTDW)?

The major difference highlighted in the context of local terminal display workstation (LTDW) and remote terminal display workstation (RTDW) is centered around the operational requirements and capabilities of the RTDW. The RTDW's need for a layer 3 switch that can function as a router emphasizes its role in network connectivity and communication.

A layer 3 switch operates at the network layer of the OSI model, allowing it to manage IP addresses and routes traffic between different networks efficiently. This capability is essential for the RTDW, as it typically operates at a distance from the main server or control systems, necessitating a robust networking structure to ensure smooth data transmission and communications. On the other hand, the LTDW operates in a more localized setup, thus does not require the same level of networking infrastructure that the RTDW demands.

The other choices do not accurately capture the primary distinction regarding the operational and networking needs between the LTDW and RTDW. They emphasize electrical power requirements and the cable types used without addressing the crucial networking aspects that define the RTDW's function. Therefore, recognizing the networking requirements inherent in the RTDW distinctly defines its role compared to the LTDW.