问题 填空题

如果该网内服务器群的IP地址为59.67.57.11~59.67.57.25,并且采用一种设备能够对服务器群提供如下保护措施:发送到服务器群的数据包将被进行过滤检测,如果检测到恶意数据包时,系统发出警报并阻断攻击。请写出这种设备的名称。这种设备应该部署在图中的哪个设备的哪个接口

答案

参考答案:E1

解析: 基于网络的入侵防护系统(NIPS)兼有防火墙、入侵检测系统和防病毒等安全组件的特性,当数据包经过时,将对它进行过滤检测,以确定该数据包是否含有威胁网络安全的特征。如果检测到一个恶意的数据包,系统不但会发出警报,还将采取相应措施(如丢弃含有攻击性的数据包或阻断连接)阻断攻击。由于服务器群的IP地址范围为59.67.57.11~59.67.57.25,其归属于路由器RC的E1接口所连接的59.67.57.0/24网段,因此,该NIPS没备应串联在路由器RC的E1接口上,使得进出服务器群的数据流都必须通过它,从而保护整个服务器群网段的安全。

阅读理解

阅读理解。

     Hands play an important part in our daily life. But do you know which of your two hands you use more?

Very few people use both hands equally well. Most of us are right-handed. Only about five people out of a

hundred are left-handed. New-born babies can take hold of things with either of their hands, but in about two

years they usually use their right hands. Scientists don't know why this happens.

     Monkeys are our close relatives in the animal world. Scientists have found that monkeys like to use one of

their hands more than the other, but it can be either hand. There are as many right-handed monkeys as

left-handed ones. Next time you visit a zoo, watch the monkeys carefully, you will see that some of them will

use their right hands and others will use their left hands. But most of the people use their right hands better and

this makes life difficult for those left-handed people. We live in a right-handed world.

1. How many people among 100 people use their left hands better?

A. 5%.

B. 50%.

C. 95%.

2. What's the meaning of the underlined word "equally" in Chinese?

A. 公正地

B. 均等地

C. 平凡地

3. New-born babies can use __________.

A. both of their hands

B. neither of their hands

C. their right hands

4. Which of the following is true?

A. There are more monkeys using their right hands than left hands.

B. There are more monkeys using their left hands than right hands.

C. There are as many right-handed monkeys as left-handed ones.

5. "We live in a right-handed world." means __________.

A. Most people use their right hands better.

B. Few people use their right hands better.

C. Half of the people use their right hands better.

问答题 简答题