【单选题】
通过缓冲区溢出进行的攻击占所有系统攻击总数的___以上。
A. 50%
B. 80%
C. 60%
D. 70%
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答案
B
解析
暂无解析
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非执行的缓冲区技术通过设置被攻击程序的___的属性为不可执行，使得攻击者不可能执行植入被攻击程序缓冲区的代码？
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【单选题】
下列，不属于网络安全的主要威胁因素的是___
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C. 来自外部和内部人员的恶意攻击和入侵
D. 非人为的、自然力造成的数据丢失、设备失效、线路阻断
【单选题】
目前大多数的Unix系统中存放用户加密口令信息的配置文件是___，而且该文件只有root用户可读
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D. /etc/group
【单选题】
John the Ripper软件提供什么类型的口令破解功能？___
A. Windows系统口令破解
B. 邮件账户口令破解
C. Unix系统口令破解
D. 数据库账户口令破解
【单选题】
下列关于John the Ripper软件的说法，错误的是___
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【单选题】
Permissive parents would ________. ___
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【单选题】
What would be the best title of this passage?_____________ ___
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【单选题】
Lie detectors are widely used in the United States because _____________. ___
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According to the passage, we know that Britain______________. ___
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【单选题】
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What troubles lie detector researchers most is that _______________. ___
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In the passage the author's attitude towards "mixed-ability teaching" is _______. ___
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By "held back" (Line 1) the author means _____. ___
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The author argues that a teacher's chief concern should be the development of the student's _________. ___
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Every day there are over_____high school students who will become regular smoker. ___
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What is implied but not stated by the author is that ________. ___
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Which of the following is NOT an advantage of distance learning? _________ ___
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【单选题】
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Which of the following is NOT true about credit cards? ____________ ___
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What is the disadvantage of credit cards? _____________ ___
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