Why would an Ethernet LAN in a bus topology have a greater risk of unauthorized disclosure than
switched Ethernet in a hub-and-spoke or star topology?

A.
IEEE 802.5 protocol for Ethernet cannot support encryption.

B.
Ethernet is a broadcast technology.

C.
Hub and spoke connections are highly multiplexed.

D.
TCP/IP is an insecure protocol.

Explanation:
Ethernet is broadcast and the question asks about a bus topology vs a SWITCHED
Ethernet. Most switched Ethernet lans are divided by vlans which contain broadcasts to a single
vlan, but remember only a layer 3 device can stop a broadcast.