问题 单项选择题

某公司主营证券与期货业务,有多个办公网点,要求企业内部用户能够高速地访问企业服务器,并且对网络的可靠性要求很高。工程师给出设计方案:

①采用核心层、汇聚层、接入层三层结构;

②骨干网使用千兆以太网;

③为了不改变已有建筑的结构,部分网点采用WLAN组网;

④根据企业需求,将网络拓扑结构设计为双核心来进行负载均衡,当其中一个核心交换机出现故障时,数据能够转换到另一台交换机上,起到冗余备份的作用。网络拓扑如下图所示。

针对网络的拓扑设计,你的评价是()。

A.恰当合理

B.不恰当,两个核心交换机都应直接上联到路由器上,保证网络的可靠性

C.不恰当,为保证高速交换,接入层应使用三层交换机

D.不恰当,为保证核心层高速交换,服务器应放在接入层

答案

参考答案:B

解析:本题考查网络规划与设计。两个核心交换机都应直接上联到路由器上,采用冗余连接保证网络的可靠性;接入层只是保障用户接入,无需三层交换机;服务器放在接入层印象访问速度。

阅读理解

阅读理解。

     Anger is a kind of feeling. Many things can make you angry. When your teacher gives you too

much homework, when your team loses an important game, when a friend borrows your favorite

thing and then breaks it, you may get really angry.

     Usually, your body will tell you when you are angry. For example, you breathe faster, your face

turns red, and you may want to break something or hit (打) someone, but sometimes, you hide (隐藏)

your anger. For example, you may hide it in your heart. The problem is that if you do this, you may get

a headache or your stomach may hurt.

     In fact, it's not good to hide your anger, and it's normal for you to get angry sometimes. But anger

must be let out in the right way, without hurting others or yourself. When you get angry, you can talk

about it with other people. It's helpful to talk about your anger with an adult, such as parents, a teacher,

etc.

     When you talk about anger, those bad feelings can start to go away. Here are some other things

you can do when you start to feel angry: talk to a good friend; count from 1 to 100; give someone a

hug (拥抱); go for a bike ride; think about good things, etc.

     Remember that how you act when you are angry can make everything better or worse. Don't let

your anger control you.

1. You may not get angry when ____. [ ]

A. there is too much homework on this weekend

B. your favorite basketball team wins the game

C. a friend breaks your favorite thing

D. your parents don't let you watch TV

2. ____ shows that you're not angry. [ ]

A. Taking a faster breath

B. Getting a headache

C. Getting a stomachache

D. Wanting to protect someone

3. According to the passage, you can do everything when you get angry except (除了) ____. [ ]

A. go for a bike ride

B. think about good things

C. talk to a good friend

D. say bad things to the people around you

4. The underlined word "control" in the last paragraph means ____ in Chinese. [ ]

A. 控制

B. 连接

C. 帮助

D. 失去

5. This passage is mainly about ____. [ ]

A. anger

B. excitement

C. happiness

D. sadness

问答题 简答题