单项选择题
Random early detection (RED) is associated with which class of service component?（）
A. classification B. policing C. queueing D. scheduling
单项选择题 Which configuration causes RIP-learned routes to be advertised to other RIP neighbors?（）
单项选择题 A network administrator wants to verify the active alarms on interface so-0/0/0. Which command displays this information?（）
多项选择题 Which two characteristitcs describe the UDP protocol?（）
