We are sure everything here____ by the time you come back from abroad in a few years.

A．had changed

B．will have changed

C．had been changed

D．will have been changed

手工链路聚合模式下的Eth-Trunk端口，其传输速率与（）有关？

A.成员端口的带宽

B.成员端口上是否配置了IP地址

C.成员端口处于公网还是私网

D.成员端口的数量