问题 填空题

如果一个登录处理系统允许一个特定的用户识别码,通过该识别码可以绕过通常的口令检查,这种安全威胁称为______。

答案

参考答案:陷门

解析: 本题考查安全威胁的相关知识。考生不仅要掌握常见安全威胁的种类和特征,还要灵活运用,用所学知识分析实际问题,历次考试都有这方面的内容。陷门是在某个系统或某个文件中设置的“机关”,使得在提供特定的输入数据时,允许违反安全策略,例如题目所说的安全威胁就是陷门。

阅读理解

阅读理解

     This brief book is aimed at high school students, but speaks to anyone learning at any stage of life.

      Its formal, serious style closely matches its content, a schoolmasterly book on schooling. The author, W. H. Armstrong, starts with the basics: reading and writing.In his opinion, reading doesn't just mean

recognizing each word on the page; it means taking in the information, digesting it and incorporating it

into oneself just as one digests a sandwich and makes it a part of himself. The goal is to bring the

information back to life, not just to treat it as dead facts on paper from dead trees. Reading and writing

cannot be completely separated from each other; in fact, the aim of reading is to express the information

you have got from the text. I've seen it again and again:someone who can't express an idea after reading

a text is just as ineffective as someone who hasn't read it at all.

     Only a third of the book remains after that discussion, which Armstrong devotes to specific tips for

studying languages, math, science and history. He generally handles these topics thoroughly(透彻地)

and equally, except for some weakness in the science and math sections and a bit too much passion

(激情) regarding history. Well, he was a history teacher-if conveyed only a tenth of his passion to his

students, that was a hundred times more than my history teachers ever got across. To my disappointment,

in this part of the book he ignores the arts. As a matter of fact, they demand all the concentration and

study that math and science do, though the study differs slightly in kind. Although it's commonly believed

that the arts can only be naturally acquired, actually, learning the arts is no more natural than learning

French or mathematics.

     My other comment is that the text aged. The first edition apparently dates to the 1960s-none of the

references(参考文献) seem newer than the late 1950s.As a result, the discussion misses the entire

computer age.

     These are small points, though, and don't affect the main discussion. I recommend it to any student

and any teacher, including the selftaught student.                  

1. According to Armstrong, the goal of reading is to________.

A. gain knowledge and expand one's view

B. understand the meaning between the lines

C. express ideas based on what one has read

D. get information and keep it alive in memory

2. The author of the passage insists that learning the arts____.

A. requires great efforts

B. demands real passion

C. is less natural than learning maths

D. is as natural as learning a language

3. What is a shortcoming of Armstrong's work according to the author?

A. Some ideas are slightly contradictory.

B. There is too much discussion on studying science.

C. The style is too serious.

D. It lacks new information.

4. This passage can be classified as________.

A. an advertisement  

B. a book review

C. a feature story  

D. a news report

单项选择题