第11题: [单项选择]IP 地址10.0.10.32和掩码255.255.255.224代表的是一个()。 A. 主机地址 B. 网络地址 C. 广播地址 D. 以上都不对 参考答案:B 答案解析:IP地址分为五大类,通常我们所接触到的之后前面三类,他们的范围是A类:1~126/8 ; B类:128~191/16;C类:192~223/24。若相知到一个IP地址是否为网络地址可以拿掩码和IP地址进行“与运算”,可得出结果。故选B。
A. It was quite easy. B. It was too difficult. C. It was useless. D. It made one feel dizzy. 参考答案:A 答案解析:[听力原文]
W:How did you like biochemistry I’ve signed up for next semester.
M:It was a breeze. No pr