问题 单项选择题

在10BASE-T 以太网中,网卡与集线器的连接接口标准一般采用 (24) 标准。10BASE-T中的10和T分别代表 (25)

A.芯径为10mm,光缆
B.芯径为10mm,双绞线
C.数据率为10Mbit/5,光缆
D.数据率为10Mbit/s,双绞线

答案

参考答案:D

解析:RJ-45接口可用于连接RJ-45接头,适用于由双绞线构建的网络,这种端口是最常见的,一般来说以太网集线器都会提供这种端口。我们平常所讲的多少口集线器,就是指的具有多少个RJ-45端口。集线器的RJ-45端口即可直接连接计算机、网络打印机等终端设备,也可以与其他交换机、集线器等集线设备和路由器进行连接。需要注意的是,当连接至不同设备时,所用的双绞线电缆的跳线方法有所不同。
以太网比较常用的传输介质包括同轴电缆(已淘汰)、双绞线、光纤三种,常以类似于“10Base-T”的形式来命名传输介质的,如图所示。

填空题
阅读理解

The Gold Coast family holidays are always great fun whether you are from Australia or from abroad. There are beautiful beaches, adventure parks, nature parks and so much more.

There are so many sights to see here. It is a pity to drive in a car and you’ll miss a great part of it. Australia is home to many animals and birds that can only be seen when moving slowly and going into the areas that they live.

When you are on a bicycle, you have the advantage of being able to stop whenever you want to see an interesting animal or bird that you have never seen before. It is a quieter mode (方式) of transportation as well, so you might even be able to take a picture. When you are on the beach, you can breathe that clean air and view the beauty of the water and sand. It is a totally different experience from either simply sunbathing or passing it in a car.

There are many choices of hiring a bicycle to experience the Gold Coast attractions. There are stores that will fit a bike perfectly to your size. These bikes for both adults and children are in many styles and colors to please any taste. If you have ever wanted to try a tandem bike (双人单车), now is your chance, because they have those too.

A bicycle hire on Gold Coast is something that everyone should try at least once. This is a wonderful chance for anyone who likes to cycle and it is also a cheap way to travel with your family.

小题1:You’d better not drive in a car on Gold Coast because ________.

A.you will break the traffic rules

B.you will cause much noise

C.you can’t enjoy the beautiful sights well

D.you can’t drive into some parks小题2:The following advantages of hiring bikes are mentioned EXCEPT that ________.

A.you can take photos of animals

B.it is a cheap way of traveling

C.you can get a clearer sight of animals

D.it is a good way to do sunbathing小题3:What is paragraph 4 mainly about?

A.How to hire bikes on Gold Coast.

B.What kinds of bikes there are in stores.

C.What bikes are the most popular.

D.Who can hire bikes on Gold Coast.小题4:What’s the author’s attitude towards a bike hire on Gold Coast?

A.He supports it very much.

B.He thinks it’s a personal choice.

C.He doesn’t like this way of traveling.

D.He thinks it’s only good for adults.