2021年07月26日来源:信管网 作者:cnitpm
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信息安全工程师每日一练试题内容(2021/7/25)
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
下列说法中,错误的是()
A、服务攻击是针对某种特定攻击的网络应用的攻击
B、主要的渗入威胁有特洛伊木马和陷阱
C、非服务攻击是针对网络层协议而进行的
D、对于在线业务系统的安全风险评估,应采用最小影响原则
IP地址分为全球地址和专用地址,以下属于专用地址的是()
A、172.168.1.2
B、10.1.2.3
C、168.1.2.3
D、192.172.1.2
以下关于隧道技术说法不正确的是()
A、隧道技术可以用来解决TCP/IP协议的某种安全威胁问题
B、隧道技术的本质是用一种协议来传输另外一种协议
C、IPSec协议中不会使用隧道技术
D、虚拟专用网中可以采用隧道技术
在访问因特网时,为了防止Web页面中恶意代码对自己计算机的损害,可以采取的防范措施是()
A、将要访问的Web站点按其可信度分配到浏览器的不同安全区域
B、在浏览器中安装数字证书
C、利用IP安全协议访问Web站点
D、利用SSL访问Web站点
(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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