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信息安全工程師每日一練試題內容（2022/1/5）

試題1： 無線傳感器網(wǎng)絡容易受到各種惡意攻擊，以下關于其防御手段說法錯誤的是（）。
A.采用干擾區(qū)內節(jié)點切換頻率的方式抵御干擾
B.通過向獨立多路徑發(fā)送驗證數(shù)據(jù)來發(fā)現(xiàn)異常節(jié)點
C.利用中心節(jié)點監(jiān)視網(wǎng)絡中其它所有節(jié)點來發(fā)現(xiàn)惡意節(jié)點
D.利用安全并具有彈性的時間同步協(xié)議對抗外部攻擊和被俘獲節(jié)點的影響
試題解析與討論：m.xiexiliangjiufa.com/st/3274326177.html
試題參考答案：C

試題2： 以下關于網(wǎng)絡流量監(jiān)控的敘述中,不正確的是（  ）。
A.網(wǎng)絡流量監(jiān)控分析的基礎是協(xié)議行為解析技術
B.數(shù)據(jù)采集探針是專門用于獲取網(wǎng)絡鏈路流量數(shù)據(jù)的硬件設備
C.流量監(jiān)控能夠有效實現(xiàn)對敏感數(shù)據(jù)的過濾
D.流量監(jiān)測中所監(jiān)測的流量通常采集自主機節(jié)點、服務器、路由器接口、鏈路和路徑等
試題解析與討論：m.xiexiliangjiufa.com/st/3898717155.html
試題參考答案：C

試題3： 外部網(wǎng)關協(xié)議BGP是不同自治系統(tǒng)的路由器之間交換路由信息的協(xié)議，BGP-4使用四種報文:打開報文、更新報文、保活報文和通知報文。其中用來確認打開報文和周期性地證實鄰站關系的是（  ）。
A.打開報文
B.更新報文
C.?；顖笪?br />D.通知報文
試題解析與討論：m.xiexiliangjiufa.com/st/411084710.html
試題參考答案：C

試題4： 在信息安全防護體系設計中，保證“信息系統(tǒng)中數(shù)據(jù)不被非法修改、破壞、丟失等”是為了達到防護體系的（）目標。
A.可用性
B.保密性
C.可控性
D.完整性試題解析與討論：m.xiexiliangjiufa.com/st/326929310.html
試題參考答案：D

試題5： 在DES加密算法中,子密鑰的長度和加密分組的長度分別是（  ）。
A.56位和64位
B.48位和64位
C.48位和56位
D.64位和64位
試題解析與討論：m.xiexiliangjiufa.com/st/3895821970.html
試題參考答案：B

試題6：

設在RSA的公鑰密碼體制中，公鑰為（c，n）=（13,35），則私鑰為（）
A、11
B、13
C、15
D、17

試題解析與討論：m.xiexiliangjiufa.com/st/2850915759.html
試題參考答案：B

試題7： 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8： 網(wǎng)頁木馬是一種通過攻擊瀏覽器或瀏覽器外掛程序的漏洞，向目標用戶機器植入木馬、病毒、密碼盜取等惡意程序的手段，為了要安全瀏覽網(wǎng)頁，不應該 （  ）。
A.定期清理瀏覽器緩存和上網(wǎng)歷史記錄
B.禁止使用ActiveX控件和_Java腳本
C.在他人計算機上使用“自動登錄”和“記住密碼”功能
D.定期清理瀏覽器Cookies
試題解析與討論：m.xiexiliangjiufa.com/st/4112212200.html
試題參考答案：C

試題9： 安全模型是一種對安全需求與安全策略的抽象概念模型，安全策略模型一般分為自主訪問控制模型和強制訪問控制模型。以下屬于自主訪問控制模型的是 （  ）。
A.BLP模型
B.基于角色的存取控制模型
C.BN模型
D.訪問控制矩陣模型
試題解析與討論：m.xiexiliangjiufa.com/st/4109626557.html
試題參考答案：D

試題10： 計算機病毒的生命周期一般包括（）四個階段
A.開發(fā)階段、傳播階段、發(fā)現(xiàn)階段、清除階段
B.開發(fā)階段、潛伏階段、傳播階段、清除階段
C.潛伏階段、傳播階段、發(fā)現(xiàn)階段、清除階段
D.潛伏階段、傳播階段、觸發(fā)階段、發(fā)作階段
試題解析與討論：m.xiexiliangjiufa.com/st/3272727591.html
試題參考答案：D