局域网数据传输具有高传输速率、低误码率的特点，典型的Ethernet

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问题单项选择题

局域网数据传输具有高传输速率、低误码率的特点，典型的Ethernet数据传输速率可以从 10Mbps到

A．100Mbps

B．644Mbps

C．1000Mbps

D．10000Mbps

答案

参考答案：D

解析：局域网具有高数据传输速率 (10Mbps～10Gbps)、低误码率的高质量数据传输环境。 10Gbps的Ethernet局域网中传输介质不使用铜介质的双绞线，而只使用光纤。

阅读理解

阅读对话，判断正误。正确的在括号里写“T”，错误的写“F"。

Hello, I'm Tom. I'm a student. I have three friends. They are Peter, Sarah and John. I like peaches. They're

sweet. John likes peaches, too. He doesn't like grapes. Because they're sour. Peter likes apple juice. It's fresh

and healthy. Sarah likes mutton, but she is heavy now. So she has to eat vegetables!

( ) 1. Tom likes grapes very much.

( ) 2. John likes peaches. Because they're sweet.

( ) 3. John doesn't like pears.

( ) 4. Peter likes carrot juice. Because it's fresh and healthy.

( ) 5. Sarah is heavy now. She must (必须) eat vegetables.

问答题简答题

物权请求权与债务请求权。