问题 单项选择题

采用telnet 202.110.101.34命令不能访问服务器,原因不可能是 (49)

A.telnet服务器停止运行
B.域名服务器出现故障
C.telnet服务请求被过滤
D.用户的IP地址受到限制

答案

参考答案:B

解析:
telnet命令不能访问服务器的原因有多种,可能是网络不同、服务终止或其他原因。由于本命令使用的是IP地址,因此不需要域名解析,故不可能是由于域名服务器出现故障所引起的。

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     I have a good friend. His name is John. He is fourteen years old. He     1     from America. His father
is an     2     , too. His mother is from Canada. But they are in China     3    .  John's father works in a
hospital     4     a doctor.     5     his  mother works in a hospital too. But she is not a doctor. She wears a
white uniform and     6     doctors. Sometimes she works     7     the day and sometimes     8     night.
John wants to     9     a reporter. He likes talking to people and he often writes stories. They all like
China. They    10     Chinese are very friendly and intelligent.
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单项选择题