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信息安全工程師每日一練試題（2023/9/11）

來源：信管網(wǎng) 2023年09月12日【所有評論】

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信息安全工程師每日一練試題內容（2023/9/11）

試題1
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
試題解析與討論：www.xcpkj.com/st/389944612.html
試題2
網(wǎng)絡安全管理是對網(wǎng)絡系統(tǒng)中網(wǎng)管對象的風險進行控制。給操作系統(tǒng)打補丁屬于（）方法。
A．避免風險
B．轉移風險
C．減少風險
D．消除風險
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/st/522847715.html
試題3

深度流檢測技術就是以流為基本研究對象，判斷網(wǎng)絡流是否異常的一種網(wǎng)絡安全技術，其主要組成部分通常不包括（）
A、流特征選擇
B、流特征提供
C、分類器
D、響應
查看答案
試題參考答案：D
試題解析與討論：www.xcpkj.com/st/284892858.html
試題4
包過濾是在IP層實現(xiàn)的防火墻技術，根據(jù)包的源IP地址、目的IP地址、源端口、目的端口及包傳遞方向等包頭信息判新是否允許包通過。包過濾型防火墻擴展IP訪問控制規(guī)則的格式如下：
access-list list-number {demy|permit}protocol
source source-wildcard source-qualifiers
destination destination-wildcard destination-qualifiers[log|log-input]
則以下說法錯誤的是 ( )。
A．source表示來源的IP地址
B．deny表示若經(jīng)過過濾器的包條件匹配，則允許該包通過
C．destination表示目的IP地址
D．log表示記錄符合規(guī)則條件的網(wǎng)絡包
查看答案
試題參考答案：B
試題解析與討論：www.xcpkj.com/st/5225716273.html
試題5
SM4是一種分組密碼算法，其分組長度和密鑰長度分別為（）。
A.64位和128位
B.128位和128位
C.128位和256位
D.256位和256位
查看答案
試題參考答案：B
試題解析與討論：www.xcpkj.com/st/3275126410.html
試題6
（）攻擊是指借助于客戶機/服務器技術,將多個計算機聯(lián)合起來作為攻擊平臺，對一個或多個目標發(fā)動DoS攻擊，從而成倍地提高拒絕服務攻擊的威力。
A.緩沖區(qū)溢出
B.分布式拒絕服務
C.拒絕服務
D. 口令
查看答案
試題參考答案：B
試題解析與討論：www.xcpkj.com/st/4114823197.html
試題7
以下關于認證技術的描述中，錯誤的是（）。
A.身份認證是用來對信息系統(tǒng)中實體的合法性進行驗證的方法
B.消息認證能夠驗證消息的完整性
C.數(shù)字簽名是十六進制的字符串
D.指紋識別技術包括驗證和識別兩個部分
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/st/3893424553.html
試題8
當防火墻在網(wǎng)絡層實現(xiàn)信息過濾與控制時,主要針對TCP/IP協(xié)議中的數(shù)據(jù)包頭制定規(guī)則匹配條件并實施過濾,該規(guī)則的匹配條件不包括（）。
A.IP源地址
B.源端口
C.IP目的地址
D.協(xié)議
查看答案
試題參考答案：B
試題解析與討論：www.xcpkj.com/st/3898620950.html
試題9
在非安全的通信環(huán)境中，為了保證消息來源的可靠性，通常采用的安全防護技術是（）
A.信息隱藏技術
B.數(shù)據(jù)加密技術
C.消息認證技術
D.數(shù)字水印技術
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/st/3272526383.html
試題10
能力成熟度模型（CMM）是對一個組織機構的能力進行成熟度評估的模型，成熟度級別一般分為五級：1級-非正式執(zhí)行，2級-計劃跟蹤，3級-充分定義，4級-量化控制，5級-持續(xù)優(yōu)化。在軟件安全能力成熟度模型中，漏洞評估過程屬于( )
A．CMM1級
B．CMM2級
C．CMM3級
D．CMM4級
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/st/5224622759.html

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