In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (1) between sending the notification and notification arriving at the source, thousands of additional (2) may arrive. In ATM network, a major tool for preventing (3) is (4) control. When a host wants a new virtual (5) ,it must describe the traffic to be offered and the service expected.

4（）

A．flow

B．admission

C．traffic

D．time

吸引创新人才的招聘制度有以下，其中不对的是（）。

A.合理评估人员需求及数量

B.招聘重点大学、高学历人才

C.采用情景面试等考核方法

D.建立备选人才库