Ethernet supports QoS via the Priority field in the header tag defined by the IEEE 802.1Q-2003 specification. Whereas the 802.1Q-2003 specification defines the header tag format, the IEEE 802.1D ...

Flow control also enables slower-speed devices to communicate with higher-speed ones and vice versa. See xon-xoff. (2) In programming, the if-then and loop statements that make up the program's logic.