Bridges and switches are Layer 2 devices that provide the same basic functionality but that also have some differences. Which two traits apply to switches only？（）

• A、 supports Layer 2 VLANs
• B、 segment LANs
• C、 are faster because forwarding decisions are made on hardware
• D、 typically have fewer ports because forwarding decisions are made in software
• E、 flood frames out all ports