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信息安全工程师每日一练试题(2022/2/10)
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信息安全工程师每日一练试题内容(2022/2/10)

试题1

移动用户有些属性信息需要受到保护,这些信息一旦泄露,会对公众用户的生命财产安全构成威胁。以下各项中,不需要被保护的属性是()
A、用户身份(ID)
B、用户位置信息
C、终端设备信息
D、公众运营商信息

试题解析与讨论:www.cnitpm.com/st/2847314700.html
试题参考答案:D

试题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
试题解析与讨论:www.cnitpm.com/st/389944612.html
试题参考答案:D、C、A、B、A

试题3: 安全电子交易协议SET中采用的公钥密码算法是RSA,采用的私钥密码算法是DES,其所使用的DES有效密钥长度是(  )。
A. 48 位
B. 56 位
C. 64 位
D. 128 位
试题解析与讨论:www.cnitpm.com/st/4112921697.html
试题参考答案:B

试题4: 属于第二层的VPN隧道协议是()。
A.IPSec
B.PPTP
C.GRE
D.IPv4
试题解析与讨论:www.cnitpm.com/st/3274424726.html
试题参考答案:B

试题5: 在缺省安装数据库管理系统MySQL后,root用户拥有所有权限且是空口令,为了安全起见,必须为root用户设置口令,以下口令设置方法中,不正确的是(  )。
A.使用MySQL自带的命令mysqladmin设置root口令
B.使用setpassword设置口令
C.登录数据库,修改数据库mysql下user表的字段内容设置口令
D.登录数据库,修改数据库mysql下的访问控制列表内容设置口令
试题解析与讨论:www.cnitpm.com/st/389422880.html
试题参考答案:D

试题6: 以下不属于代码静态分析的方法是()。
A.内存扫描
B.模式匹配
C.定理证明
D.模型检测
试题解析与讨论:www.cnitpm.com/st/3275016237.html
试题参考答案:A

试题7

有一种原则是对信息进行均衡、全面的防护,提高整个系统的安全性能,该原则称为()
A、动态化原则
B、木桶原则
C、等级性原则
D、整体原则

试题解析与讨论:www.cnitpm.com/st/2845529113.html
试题参考答案:B

试题8: 下列各种协议中,不属于身份认证协议的是()
A. S/Key口令协议
B. Kerberos协议
C. X.509协议
D. IPSec协议
试题解析与讨论:www.cnitpm.com/st/327129942.html
试题参考答案:D

试题9

以下关于IPSec协议的叙述中,正确的是()
A、IPSec协议是解决IP协议安全问题的一种方案
B、IPSec协议不能提供完整性
C、IPSec协议不能提供机密性保护
D、IPSec协议不能提供认证功能

试题解析与讨论:www.cnitpm.com/st/2849818821.html
试题参考答案:A

试题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
试题解析与讨论:www.cnitpm.com/st/4115223167.html
试题参考答案:A、D、C、B、A

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