ARP协议的作用是由IP地址求MAC地址，ARP请求是广播发送，ARP响应

问题单项选择题

ARP协议的作用是由IP地址求MAC地址，ARP请求是广播发送，ARP响应是（）发送。

A．单播

B．组播

C．广播

D．点播

答案

参考答案：A

解析：

ARP协议的作用是由IP地址求MAC地址，其协议数据单元格式如下图所示：

硬件类型

选择题

On the wall of his office _________the paintings of early French artists.

A．hanged

B．hanging

C．hang

D．are hanged

选择题

---Huck, how old is your mother this year?

--- . And we had a party for her birthday last weekend.

A．Fortieth, forty

B．Forty, forty

C．Forty, fortieth

D．fortieth, fortieth