1976年1月8日，周恩来总理逝世，联合国决定下半旗致哀，有的成员国表示反对，当时的联合国秘书长就说：“世界上有哪个国家的总理终身受人爱戴？在国外银行没有一分钱存款，没有一个子女？”反对的人无言以对，决定由此顺利通过。

A. 0
B. 1
C. 2
D. 3

A. 检查包的目的地址
B. 将包送到交换机端口进行发送
C. 从缓冲区中提取下一个包
D. 检查包中传输的数据内容

A. It supports admission control that allows a network to reject or downgrade new RSVP sessions if one of the interfaces in the path has reached the limit （that is， all reservable bandwidth is booked）.
B. RSVP signals QoS requests per individual flow. In the request the authorized user （authorization object） and needed traffic policy （policy object） are sent. The network can then provide best-effort delivery to these individual flows.
C. RSVP streamlines communication by making it unnecessary to inform network devices of flow parameters （IP addresses and port numbers）.
D. Because of the stateful RSVP architecture， continuous signaling does not have to occur.
E. The flow-based approach is scalable to large implementations， such as the public Internet， because RSVP tracks each individual flow.