当一台以太网交换机收到一个以太帧的时候，哪个MAC地址会被交换机学习并且保存到MAC地址表中？（）

二层以太网交换机根据收到的数据帧中的目的MAC地址和IP地址决定数据帧应发向交换机的哪个端口。

以太网的MAC地址有（）位二进制表示。

IP组播地址236.43.5.1将译成下面的哪个以太网MAC地址？（）

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

以太网的MAC地址有（）比特。

以太网的MAC地址有多少比特（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

实现从IP地址到以太网MAC地址转换的命令为：（　　）。