Answer:
Recommended is frame relay architecture with a local loop at each factory supporting the frame relay service connection to the network provider's POP
Explanation:
Frame Relay can be seen as WAN protocol that is said to often operate at both the physical and data layers link of the OSI reference model due to it high-performance and due to the fact that FRAME RELAY are as well use across Integrated Services Digital Network (ISDN) interfaces in which they are designed for cost-efficient data transmission in order to enable effective intermittent traffic between local area networks (LANs) and endpoints in wide area networks (WANs) which is why frame contains all the information necessary to route it to the correct destination.
Therefore type of BN and WAN architecture and WAN service i would recommend based on the above information is FRAME RELAY ARCHITECTURE with a local loop at each factory supporting the frame relay service connection to the network provider's POP.
It's more expensive, it's more difficult to configure and maintain and it can be more difficult to troubleshoot
Doesn't look like there are any..
