In ring topology, the correct answer is option 'B' - Connections are made directly only.

Ring topology is a type of network topology where all devices are connected in a closed loop, forming a ring-like structure. In this topology, data travels in one direction along the ring, passing through each device until it reaches its destination. Each device in the network is directly connected to two neighboring devices, forming a continuous loop.

Explanation:

1. All the devices are connected to each other:
- This statement is incorrect for ring topology. In a ring topology, each device is only directly connected to its neighboring devices, forming a closed loop. It does not involve direct connections between all devices in the network.

2. Connections are made directly only:
- This statement is correct for ring topology. In a ring network, each device is directly connected to its adjacent devices in the loop. For example, if there are five devices in the network, device 1 will be directly connected to device 2 and device 5, device 2 will be directly connected to device 1 and device 3, and so on. The connections are made directly between adjacent devices, ensuring a continuous loop.

3. Connections are made indirectly and directly:
- This statement is incorrect for ring topology. In a ring network, connections are made directly between adjacent devices only. There are no indirect connections between devices.

4. There is no connection at all:
- This statement is incorrect for ring topology. In a ring network, every device is connected to its neighboring devices, forming a closed loop. Each device has a direct connection to two other devices.

Summary:
In a ring topology, the correct answer is option 'B' - Connections are made directly only. Devices in a ring network are directly connected to their adjacent devices, forming a continuous loop. This topology does not involve direct connections between all devices or any indirect connections.