网络系统中，通常把（）置于DMZ区。 A.网络管理服务器 B.Web服_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

网络系统中，通常把（）置于DMZ区。

A.网络管理服务器

B.Web服务器

C.入侵检测服务器

D.财务管理服务器

答案

参考答案：B

解析：本题考查防火墙的基础知识。DMZ是指非军事化区，也称周边网络，可以位于防火墙之外也可以位于防火墙之内。非军事化区一般用来放置提供公共网络服务的设备，这些设备由于必须被公共网络访问，所以无法提供与内部网络主机相等的安全性。分析四个备选答案，Web服务器是为一种为公共网络提供Web访问的服务器；网络管理服务器和入侵检测服务器是管理企业内部网和对企业内部网络中的数据流进行分析的专用设备，一般不对外提供访问；而财务服务器是一种仅针对财务部门内部访问和提供服务的设备，不提供对外的公共服务。

完形填空

Hundreds of years ago in a small town, a moneylender lent a lot of money to a poor man. The moneylender , who was old and ugly,      the poor man’s beautiful daughter. So he came up with an idea. He said the poor man didn’t need to return the money to him      he could marry his daughter. Both the man and his daughter were     .
The moneylender then told them that he would put a small      stone and a small white stone into an empty bag. The girl would have to      one. If she took the black stone , she would become the moneylender’s      and her father’s debt(债务) would be let go. If she picked the white stone, she didn’t need to marry him and her father’s debt would      be let go. Her father would be put into prison if she refused to pick a stone.
As they talked, the moneylender picked up two stones. As he did that, the girl       that he had put two black stones in the bag. He then asked the girl to pick her stone from the bag.
The girl thought for a while and then had an idea. She put her hand into the bag and took out a stone.      looking at it, she let it fall onto the path where it      became lost among all the other stones. “ Oh how      I was！” She said, “But never     . If you look into the bag for the one that is left, you will be able to      which stone I picked.” This      tells: Sometimes we can think about things in a      way. Most difficult problems do have an solution.

B．surprisingly

C．immediately

单项选择题

心脏冠脉CTA中，螺距与心率的关系是（）

A.螺距不随心率变化而变化

B.螺距随心率增加而增加

C.螺距随心率增加而减少

D.屏气后心率变化较大时，螺距不会改变

E.螺距由操作技术人员决定