- Flow control, windowing, and acknowledgements.
- ASIC.
- 802.1Q and ISL.
- The service password-encryption command.
- 11000000.10100000.11010010.10110001.
- Packet.
- Unicast, Multicast, and Anycast.
- Dual-stack, tunnelling, and protocol translation.
- The access-class command.
- Administrative distance.