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信息安全工程師每日一練試題內(nèi)容(2022/4/24)
試題1
關(guān)于祖沖之算法的安全性分析不正確的是( )。查看答案
試題參考答案:B
試題2
PKI是一種標(biāo)準(zhǔn)的公鑰密碼密鑰管理平臺。在PKI中,認(rèn)證中心CA是整個PKI體系中各方都承認(rèn)的一個值得信賴的、公正的第三方機(jī)構(gòu)。CA的功能不包括( )。查看答案
試題參考答案:C
試題3
包過濾技術(shù)防火墻在過濾數(shù)據(jù)包時,一般不關(guān)心( )。查看答案
試題參考答案:D
試題4
( )攻擊是指借助于客戶機(jī)/服務(wù)器技術(shù),將多個計算機(jī)聯(lián)合起來作為攻擊平臺,對一個或多個目標(biāo)發(fā)動DoS攻擊,從而成倍地提高拒絕服務(wù)攻擊的威力。查看答案
試題參考答案:B
試題5
在PKI中,關(guān)于RA的功能,描述正確的是( )。查看答案
試題參考答案:D
試題6
對于定義在GF(p)上的橢圓曲線,取素數(shù)P=11,橢圓曲線y2=x3+x+6mod11,則以下是橢圓曲線11平方剩余的是( )。查看答案
試題參考答案:B
試題7
數(shù)字證書是一種由一個可信任的權(quán)威機(jī)構(gòu)簽署的信息集合。PKI中的X. 509數(shù)字證書的內(nèi)容不包括( )。查看答案
試題參考答案:D
試題8
訪問控制是對信息系統(tǒng)資源進(jìn)行保護(hù)的重要措施,適當(dāng)?shù)脑L問控制能夠阻止未經(jīng)授權(quán)的用戶有意或者無意地獲取資源。計算機(jī)系統(tǒng)中,訪問控制的任務(wù)不包括() 。查看答案
試題參考答案:A
試題9
(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
查看答案
試題參考答案:D、A、C、B、A
試題10
未授權(quán)的實(shí)體得到了數(shù)據(jù)的訪問權(quán),這屬于對安全的()
A、機(jī)密性
B、完整性
C、合法性
D、可用性
查看答案
試題參考答案:A
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