问题 问答题

某公司将现有网络进行升级改造,随着公司联网设备的增多,整个网络性能下降的越来越快。

【问题1】
在尽量节省资金的情况下,同时将原有设备充分利用(原来用HUB来连接各网段),应如何改善网络性能,增加什么设备并说出理由。

答案

参考答案:将HUB换成交换机,HUB连到交换机的一个端口上,下连多个计算机。HUB是共享设备,交换机将网络分成多个网段,多个网段间可以同时进行信息交换。

单项选择题
阅读理解

“I didn’t hear them call my name,” explained Shelley Hennig to Active Teens (AT) as she talked about that exciting moment on national television when she won the honor of Miss Teen USA 2013. “Are you ready?” is what she heard. Then she said, “I shook my head no, and then they said ‘yes’ and it was announced again."

It was four days after that life changing moment for the seventeen-year-old high school student from Destrehan, Louisiana—she was still on cloud nine.

“I was so shocked! I never believed that it could actually really happen.” Present in the audience(观众)that day were: her mother and father, older brother, her friends, and her dance teacher.

Understanding why members of her family and her friends would be there, AT asked why her dance teacher had traveled so far to see her compete. “She’s always been my role model. I’ve danced with her since I was six. She’s been through so many difficulties and came through them all. I’ve learned to get over bad life’s experiences and learned how to move on because of her.”

One of those bad life’s experiences for Shelley happened three years ago when her brother Brad was killed in a drunk driving accident. He was 18. She found writing helped her get through the rough days. She said, “I write a lot about my brother. I write a lot, a lot, a lot...”

As Miss Louisiana Teen, she traveled around the state speaking to teens about the dangers of drinking and driving. In her role as Miss Teen USA, Shelley will continue to speak to youth about safe driving, in addition to many other things to help the youth.

When AT asked Miss Teen USA if she had any advice for our readers, she said, “Don’t let anyone change you. Hang out with people that make you feel good about yourself. That way, it is easy to be yourself.

小题1:The underlined words “on cloud nine” in Paragraph 2 can be replaced by ________.

A.frightened

B.troubled

C.very happy

D.very angry小题2:Shelley takes her dance teacher as a role model mainly because she is _______.

A.determined

B.friendly

C.strict

D.experienced小题3:What did Shelley often do after she became Miss Louisiana Teen?

A.She visited drunken drivers.

B.She gave dance performance.

C.She made speeches on safe driving.

D.She helped other teens with their studies.小题4:What suggestion does Shelley give to the teens?

A.Be yourself with the support of friends.

B.Meet friends whenever possible.

C.Go easy on yourself and others.

D.Have a good role model.