With regard to bridges and switches, which of the following statements are true?（）

A.Switches are primarily software based while bridges are hardware based.

B.Both bridges and switches forward Layer 2 broadcasts.

C.Bridges are frequently faster than switches.

D.Switches typically have a higher number of ports than bridges.

E.Bridges define broadcast domain while switches define collision domains.

F.Both bridges and switches make forwarding decisions based on Layer 2 addresses.