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信息安全工程師每日一練試題內(nèi)容（2023/11/14）
試題1
在PKI中,關(guān)于RA的功能,描述正確的是（ ）。
A.RA是整個PKI體系中各方都承認(rèn)的一個值得信賴的、公正的第三方機構(gòu)
B.RA負(fù)責(zé)產(chǎn)生,分配并管理PKI結(jié)構(gòu)下的所有用戶的數(shù)字證書,把用戶的公鑰和用戶的其他信息綁在一起,在網(wǎng)上驗證用戶的身份
C.RA負(fù)責(zé)證書廢止列表CRL的登記和發(fā)布
D.RA負(fù)責(zé)證書申請者的信息錄入,審核以及證書的發(fā)放等任務(wù),同時,對發(fā)放的證書完成相應(yīng)的管理功能查看答案
試題參考答案：D
試題2
下面不屬于PKI組成部分的是（）
A.證書主體
B.使用證書的應(yīng)用和系統(tǒng)
C.證書權(quán)威機構(gòu)
D.AS查看答案
試題參考答案：D
試題3
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（ ）。
A.x=1
B.x=3
C.x=6
D.x=9查看答案
試題參考答案：B
試題4
下列關(guān)于公鑰密碼體制說法不正確的是（ ）。
A.在一個公鑰密碼體制中,一般存在公鑰和私鑰兩個密鑰
B.公鑰密碼體制中僅根據(jù)密碼算法和加密密鑰來確定解密密鑰在計算上是可行的
C.公鑰密碼體制中僅根據(jù)密碼算法和加密密來確定解密密在計算上是不可行的
D.公鑰密碼體制中的私鑰可以用來進(jìn)行數(shù)字簽名查看答案
試題參考答案：B
試題5
a=17,b=2,則滿足a與b取模同余的是（ ）。
A.4
B.5
C.6
D.7查看答案
試題參考答案：B
試題6
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查看答案
試題參考答案：D、C、A、B、A
試題7
Android 是一個開源的移動終端操作系統(tǒng)，共分成Linux 內(nèi)核層、系統(tǒng)運行庫層、應(yīng)用程序框架層和應(yīng)用程序?qū)铀膫€部分。顯示驅(qū)動位于 ( )。
A．Linux內(nèi)核層
B．系統(tǒng)運行庫層
C．應(yīng)用程序框架層
D．應(yīng)用程序?qū)?br />查看答案
試題參考答案：A
試題8
依據(jù)國家信息安全等級保護(hù)相關(guān)標(biāo)準(zhǔn)，軍用不對外公開的信息系統(tǒng)至少應(yīng)該屬于（）
A、二級及二級以上
B、三級及三級以上
C、四級及四級以上
D、五級查看答案
試題參考答案：C
試題9
IIS是Microsoft 公司提供的Web服務(wù)器軟件，主要提供Web服務(wù)。IIS的訪問控制包括：請求過濾、URL 授權(quán)控制、IP地址限制、文件授權(quán)等安全措施，其中對文件夾的NTFS 許可權(quán)限管理屬于（ ）。
A．請求過濾
B．URL授權(quán)控制
C．IP地址限制
D．文件授權(quán)查看答案
試題參考答案：D
試題10
以下有關(guān)信息安全管理員職責(zé)的敘述，不正確的是（）
A、信息安全管理員應(yīng)該對網(wǎng)絡(luò)的總體安全布局進(jìn)行規(guī)劃
B、信息安全管理員應(yīng)該對信息系統(tǒng)安全事件進(jìn)行處理
C、信息安全管理員應(yīng)該負(fù)責(zé)為用戶編寫安全應(yīng)用程序
D、信息安全管理員應(yīng)該對安全設(shè)備進(jìn)行優(yōu)化配置查看答案
試題參考答案：C
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