In terms of computer security, a switch offers better security than a hub. Why is this?

a. A hub requires a special pin to activate the connection.
b. A hub forwards the data it receives to every device connected to the hub. It is possible for network devices to pick up data intended for a different device. A switch eliminates this by only forwarding data packets to the correct device whenever possible.
c. A switch forwards the data it receives to every device connected to the switch. It is possible for network devices to pick up data intended for a different device. A hub eliminates this by only forwarding data packets to the correct device whenever possible.
d. The use of the switch guarantees that all devices connected to it share link integrity pulses. This sharing of the pulses strengthens the security of the connection.

b. A hub forwards the data it receives to every device connected to the hub. It is possible for network devices to pick up data intended for a different device. A switch eliminates this by only forwarding data packets to the correct device whenever possible.