信息安全工程師當(dāng)天每日一練試題地址：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6

往期信息安全工程師每日一練試題匯總：m.xiexiliangjiufa.com/class/27/e6_1.html

信息安全工程師每日一練試題（2022/2/10）在線測試：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2022/2/10

點(diǎn)擊查看：更多信息安全工程師習(xí)題與指導(dǎo)

信息安全工程師每日一練試題內(nèi)容（2022/2/10）

試題1：

移動用戶有些屬性信息需要受到保護(hù)，這些信息一旦泄露，會對公眾用戶的生命財(cái)產(chǎn)安全構(gòu)成威脅。以下各項(xiàng)中，不需要被保護(hù)的屬性是（）
A、用戶身份（ID）
B、用戶位置信息
C、終端設(shè)備信息
D、公眾運(yùn)營商信息

試題解析與討論：m.xiexiliangjiufa.com/st/2847314700.html
試題參考答案：D

試題2： Trust is typically interpreted as a subjective belief in the reliability， honesty and  security  of an entity on which we depend （ ）our welfare .In online environments we depend on a wide spectrun of things , ranging from computer hardware,software and data to people and organizations. A security solution always assumes certain entities function according to specific policies.To trust is precisely to make this sort of assumptions , hence , a trusted entity is the same as an entity that is assumed to function according to  policy . A consequence of this is that a trust component of a system must work correctly in order   for the security of that system to hold, meaning that when a trusted（  ）fails , then the sytems and applications that depend on it can（  ）be considered secure.An often cited articulation of this principle is:＂ a trusted system or component is one that can break your security policy” ( which happens when the trust system fails ). The same applies to a trusted party such as a service provider ( SP for short )that is , it must operate according to the agreed or assumed   policy in order to ensure the expected level of securty and quality of services . A paradoxical   conclusion to be drawn from this analysis is that security assurance may decrease when increasing the number of trusted components and parties that a service infrastructure depends on . This is because the security of an infrastructure consisting of many.
Trusted components typically follows the principle of the weakest link , that is ,in many situations the the overall security can only be as strong as the least reliable or least secure of all the trusted components. We cannot avoid using trusted security components,but the fewer the better. This is important to understand when designing the  identity management architectures,that is, fewer the trusted parties in an identity management model , stronger the security that can be achieved by it.
The transfer of the social constructs of identity and trust into digital and computational concepts helps in designing and implementing large scale online markets and communities,and also plays an important role in the converging mobile and Internet environments.Identity management (denoted Idm hereafter ) is about recognizing and verifying the correctness of identitied in online environment .Trust management becomes a component of （  ）whenever different parties rely on each other for identity provision and authentication . IdM and Trust management therefore depend on each other in complex ways because the correctness of the identity itself must be trusted for the quality and reliability of the corresponding entity to be trusted.IdM is also an essential concept when defining  authorisation policies in personalised services.
Establishing trust always has a cost, so that having  complex trust requirement typically leads to high overhead in establishing the required trust. To reduce costs there will be incentives for stakeholders to “cut corners”regarding trust requirements ,which could lead to inadequate security . The challenge is to design IdM systems with relatively simple trust requirements.Cryptographic mechanisms are often a core component of IdM solutions,for example,for entity and data authentication.With cryptography,it is often possible to propagate trust from where it initially exists to where it is needed .The establishment of initial（  ）usually takes place in the physical world,and the subsequent propagation of trust happens online,often in an automated manner.
（71）A.with
B. on
C. of
D. for
（72）A.entity
B.person
C.component
D.thing
（73）A. No longer
B. never
C. always
D.often
（74）A. SP
B. IdM
C.Internet
D.entity
（75）A.trust
B.cost
C.IdM
D. solution
試題解析與討論：m.xiexiliangjiufa.com/st/389944612.html
試題參考答案：D、C、A、B、A

試題3： 安全電子交易協(xié)議SET中采用的公鑰密碼算法是RSA,采用的私鑰密碼算法是DES，其所使用的DES有效密鑰長度是（  ）。
A. 48 位
B. 56 位
C. 64 位
D. 128 位
試題解析與討論：m.xiexiliangjiufa.com/st/4112921697.html
試題參考答案：B

試題4： 屬于第二層的VPN隧道協(xié)議是（）。
A.IPSec
B.PPTP
C.GRE
D.IPv4
試題解析與討論：m.xiexiliangjiufa.com/st/3274424726.html
試題參考答案：B

試題5： 在缺省安裝數(shù)據(jù)庫管理系統(tǒng)MySQL后，root用戶擁有所有權(quán)限且是空口令，為了安全起見，必須為root用戶設(shè)置口令，以下口令設(shè)置方法中，不正確的是（  ）。
A.使用MySQL自帶的命令mysqladmin設(shè)置root口令
B.使用setpassword設(shè)置口令
C.登錄數(shù)據(jù)庫,修改數(shù)據(jù)庫mysql下user表的字段內(nèi)容設(shè)置口令
D.登錄數(shù)據(jù)庫,修改數(shù)據(jù)庫mysql下的訪問控制列表內(nèi)容設(shè)置口令
試題解析與討論：m.xiexiliangjiufa.com/st/389422880.html
試題參考答案：D

試題6： 以下不屬于代碼靜態(tài)分析的方法是（）。
A.內(nèi)存掃描
B.模式匹配
C.定理證明
D.模型檢測
試題解析與討論：m.xiexiliangjiufa.com/st/3275016237.html
試題參考答案：A

試題7：

有一種原則是對信息進(jìn)行均衡、全面的防護(hù)，提高整個(gè)系統(tǒng)的安全性能，該原則稱為（）
A、動態(tài)化原則
B、木桶原則
C、等級性原則
D、整體原則

試題解析與討論：m.xiexiliangjiufa.com/st/2845529113.html
試題參考答案：B

試題8： 下列各種協(xié)議中，不屬于身份認(rèn)證協(xié)議的是（）
A. S/Key口令協(xié)議
B. Kerberos協(xié)議
C. X.509協(xié)議
D. IPSec協(xié)議
試題解析與討論：m.xiexiliangjiufa.com/st/327129942.html
試題參考答案：D

試題9：

以下關(guān)于IPSec協(xié)議的敘述中，正確的是（）
A、IPSec協(xié)議是解決IP協(xié)議安全問題的一種方案
B、IPSec協(xié)議不能提供完整性
C、IPSec協(xié)議不能提供機(jī)密性保護(hù)
D、IPSec協(xié)議不能提供認(rèn)證功能

試題解析與討論：m.xiexiliangjiufa.com/st/2849818821.html
試題參考答案：A

試題10： The modern study of symmetric-key ciphers relates mainly to the study of block ciphers and stream ciphers and to their applications. A block cipher is, in a sense, a modern embodiment of Alberti's polyalphabetic cipher: block ciphers take as input a block of （71 ）and a key, and output a block of ciphertext of the same size. Since messages are almost always longer than a single block, some method of knitting together successive blocks is required. Several have been developed, some with better security in one aspect or another than others. They are the mode of operations and must be carefully considered when using a block cipher in a cryptosystem.
The Data Encryption Standard (DES) and the Advanced Encryption Standard (AES) are( 72 )designs which have been designated cryptography standards by the US government (though DES's designation was finally withdrawn after the AES was adopted). Despite its deprecation as an official standard, DES (especially its still-approved and much more secure triple-DES variant) remains quite popular; it is used across a wide range of applications, from ATM encryption to e-mail privacy and secure remote access. Many other block ciphers have been designed and released, with considerable variation in quality. Many have been thoroughly broken. See Category: Block ciphers.
Stream ciphers, in contrast to the ‘block’type, create an arbitrarily long stream of key material, which is combined ( 73 )the plaintext bit-by-bit or character-by-character, somewhat like the one-time pad. In a stream cipher, the output( 74 )is created based on an internal state which changes as the cipher operates. That state change is controlled by the key, and, in some stream ciphers, by the plaintext stream as well. RC4 is an example of a well-known, and widely used, stream cipher; see Category: Stream ciphers.
Cryptographic hash functions (often called message digest functions) do not necessarily use keys, but are a related and important class of cryptographic algorithms. They take input data (often an entire message), and output a short fixed length hash, and do so as a one-way function. For good ones, ( 75 ) (two plaintexts which produce the same hash) are extremely difficult to find.
Message authentication codes (MACs) are much like cryptographic hash functions, except that a secret key is used to authenticate the hash value on receipt. These block an attack against plain hash functions.
（71）
A.plaintext
B.ciphertext
C.data
D.hash
（72）
A.stream cipher
B.hash function
C.Message authentication code
D.Block cipher
（73）
A.of
B.for
C.with
D.in
（74）
A.hash
B.stream
C.ciphertext
D.plaintext
（75）
A.collisions
B.image
C.preimage
D.solution
試題解析與討論：m.xiexiliangjiufa.com/st/4115223167.html
試題參考答案：A、D、C、B、A