试题1

以下关于网络钓鱼的说法中，不正确的是（）
A、网络钓鱼融合了伪装、欺骗等多种攻击方式
B、网络钓鱼与Web服务没有关系
C、典型的网络钓鱼攻击都将被攻击者引诱到一个通过精心设计的钓鱼网站上
D、网络钓鱼是“社会工程攻击”是一种形式

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试题2

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试题3

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试题4

（1）is the science of hiding information. Whereas the goal of cryptography is to make data unreadable by a third party. the goal of steganography is to hide the data from a third party. In this article, I will discuss what steganography is, what purposes it serves, and will provide an example using available software.
There are a large number of steganographic （2）that most of us are familiar with (especially if you watch a lot of spy movies), ranging from invisible ink and microdots to secreting a hidden message in the second letter of each word of a large body of text and spread spectrum radio communication. With computers and networks, there are many other ways of hiding informations, such as:
Covert channels (c,g, Loki and some distributed denial-of-service tools use the Internet Control （3）Protocol, or ICMP, as the communication channel between the “bad guy”and a compromicyed system)
Hidden text within Web pages
Hiding files in “plain sight”(c,g. what better place to “hide”a file than with an important sounding name in the c:\winnt system32 directory)
Null ciphers(c,g, using the first letter of each word to form a hidden message in an otherwise innocuous text)
steganography today, however, is significantly more （4）than the example about suggest, allowing a user to hide large amounts of information within image and audio. These forms of steganography often are used in conjunction with cryptography so the information is double protected; first it is encrypted and then hidden so that an advertisement first. find the information ( an often difficult task in and of itself) and the decrypted it.
The simplest approach to hiding data within an image file is called （5）signature insertion. In this method, we can take the binary representation of the hidden data and the bit of each byte within the covert image. If we are using 24-bit color the amount and will be minimum and indiscriminate to the human eye.
（1）A、Cryptography
B、Geography
C、Stenography
D、Steganography
（2）A、methods
B、software
C、tools
D、services
（3）A、Member
B、Management
C、Message
D、Mail
（4）A、powerful
B、sophistication
C、advanced
D、easy
（5）A、least
B、most
C、much
D、less

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试题5

两个密钥三重DES加密：C=CK1[DK2[EK1[P]]],K1≠K2，其中有效的密钥为（）
A、56
B、128
C、168
D、112

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试题6

计算机犯罪是指利用信息科学技术且以计算机跟踪对象的犯罪行为，与其他类型的犯罪相比，具有明显的特征，下列说法中错误的是（）
A、计算机犯罪具有隐蔽性
B、计算机犯罪具有高智能性，罪犯可能掌握一些其他高科技手段
C、计算机犯罪具有很强的破坏性
D、计算机犯罪没有犯罪现场

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试题7

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试题8

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试题9

以下行为中，不属于威胁计算机网络安全的因素是（）
A、操作员安全配置不当而造成的安全漏洞
B、在不影响网络正常工作的情况下，进行截获、窃取、破译以获得重要机密信息
C、安装非正版软件
D、安装蜜罐系统

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试题10

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