多项选择题
A. to rewrite the ToS bits in the IP header
B. to classify traffic
C. to identify traffic that should receive commom treatment
D. to assign traffic to output queues
单项选择题 Random early detection (RED) is associated with which class of service component?（）
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?（）