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问题 单项选择题

工作在保护模式下的Penfium微处理器出现中断调用时，中断服务程序的段描述符在( )。

A．在GDT中

B．在LDT中

C．在GDT或LDT中

D．在IDT中

答案

参考答案：C

选择题

The house is made _________ bamboo and it is made _________ six rooms.

A．up of; of

B．of; from

C．of; up of

D．from; of
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单项选择题

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

In security, an (1) is a form of possible loss or harm in a computing system; examples of exposures are unauthorized disclosure of data, modification of data, or (2) of legitimate access to computing. A vulnerability is a weakness in the security system that might be exploited to cause loss or harm. A human who exploits a vulnerability perpetrates an attack on the system. Threats to computing systems are circumstances that have the potential to cause loss or harm; human attacks are examples of threats, as are natural disasters, inadvertent human errors, and internal hardware or software (3) . Finally, a control is a protective measure an action, a device, a procedure, or a technique - that reduces a vulnerability. The major (4) of computing systems are hardware, software, and data. There are four kinds of threats to the security of a computing system: interruption, interception, modification, and (5) . The four threats all exploit vulnerabilities of the assets in computing systems.

5（）

A．fabrication

B．falsification

C．stealing

D．rebuild
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