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【单选题】
PPP协议是在点对点的链路上承载网络层数据包的一种广域网数据链路层协议,以下说法正确的是()
A.
PPP协议只能用于点对点的同步串行链路上
B.
PPP协议具有认证机构
C.
PPP协议分为LCP子层和NCP子层,NCP负责建立点对点的连接,LCP负责协商上层协议
D.
不同厂商的路由器上运行的PPP协议时不兼容的
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【单选题】Here is _______old book. And_________ old book is my sister’s.
A.
an, the
B.
an, an
C.
the, an
D.
the, the
【简答题】十一、选择正确的选项,补全对话。 A: What can I do for you? B: 1. _____ A: How old is your daughter? B: She is four years old. A: Look. Here are some bikes for the students. B: 2. _____ A: White one? Here are some...
【简答题】UNI :
【单选题】UNI是( )。
A.
业务节点接口
B.
用户网络接口
C.
维护管理口
D.
核心网接口
【多选题】下列关于中兴ZXCTN6000进行UNI配置以下说法正确的是:()
A.
如果UNI端口已经绑定了业务,则不允许删除
B.
如果UNI端口已经绑定了业务,则不允许修改UNI内绑定的物理端口
C.
配置E1业务时,不需要配置UNI接口
D.
配置UNI端口时,会直接生成相关的CIP接口(网管侧不可见CIP,仅设备侧可见)
【单选题】指出句 中主语: There is an old man coming here.
A.
an old man
B.
there
C.
there is
D.
here
【简答题】Look! Here is a photo my family. I have(有) a big family. My are very old now. My grandfather is 70 years old and my grandmother 69 years old. I have an . He’s my father’s . I have two . They’re my mot...
【单选题】给出 SQL 语句,删除“职工”表中名为“ UNI ”的唯一性约束。
A.
ALTER TABLE 课程 DROP  UNI;
B.
ALTER TABLE 课程 DROP INDEX UNI;
C.
ALTER TABLE 课程 DELETE INDEX UNI;
D.
DROP UNI;
【简答题】阅读理解。 Our class is going to volunteer to serve (服务) the old people's home. Here is the plan. 8:00 - 9:00    Clean, mend (修理) chairs and tables 9:00 - 9:30    Dance, sing and chat 9:30 - 10:30   Plant ...
【单选题】Could you tell me ? [     ]
A.
how old is your son
B.
that he will come here soon
C.
weather is fine tomorrow
D.
who is going to speak at the meeting
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