Final answer:
Infrastructure mode in wireless networks uses a central device, is less secure than ad hoc mode, and resembles a logical bus and physical star.
Step-by-step explanation:
The correct statements regarding infrastructure mode in wireless networks are:
- Uses a central device: In infrastructure mode, wireless devices connect to a central device, such as a router or access point, which manages the network.
- Less secure than ad hoc mode: Infrastructure mode is generally considered less secure than ad hoc mode because it involves a central device that can be targeted by attackers.
- Most like a logical bus and physical star: Infrastructure mode resembles a logical bus because multiple devices are connected to a central device, and it resembles a physical star because all communication passes through the central device.
Therefore, options c, d, and b are correct.