Duane will use an open system LAN because he knows the open system will support varieties of

hardware and software components made by different vendors. Steve will use a closed system LAN
because he knows the closed system is favored by network manufacturers. Who is using the best system
for a LAN?
A. Only Duane
B. Both
C. Neither
D. Only Steve

To determine who is using the best system for a LAN, we need to evaluate the advantages and disadvantages of open system LAN and closed system LAN.

An open system LAN allows the use of hardware and software components from different vendors. This means that Duane will have more options and flexibility in choosing components and may be able to find better deals from different manufacturers. On the other hand, a closed system LAN is favored by network manufacturers because it offers more control and integration between hardware and software components. This can result in better stability and compatibility within the network.

Based on this information, Duane using an open system LAN is likely to have an edge since he can choose components based on specific requirements, cost, and performance considerations. However, this also depends on Duane's technical expertise and ability to manage different components from various vendors.

Steve, who is using a closed system LAN, may have the advantage of better integration and support from network manufacturers. The closed system may offer a more streamlined user experience and potentially better technical support.

Considering these factors, the option that best corresponds to the question is:
D. Only Steve

Stupid choices. There is no "best" system for everyone; it depends on your computing needs and security concerns.