Networking Topologies

- In a Mesh topology, each device is connected with every other device, so A matches with III.
- In a Ring topology, each device is connected to two other devices, one each on either side, so B matches with IV.
- In a Bus topology, a single backbone wire is shared among the nodes, so C matches with I.
- In a Star topology, each device is connected to a central networking device, so D matches with II.
Thus, the correct answer is "A-I, B-II, C-III, D-IV."