信息安全工程師每日一練試題（2023/10/28）
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信息安全工程師每日一練試題內(nèi)容（2023/10/28）
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2
有線等效保密協(xié)議WEP是IEEE 802.11標(biāo)準(zhǔn)的一部分，其為了實(shí)現(xiàn)機(jī)密性采用的加密算法是（）
A.DES
B.AES
C.RC4
D.RSA查看答案
試題參考答案：C
試題3
數(shù)字簽名是對以數(shù)字形式儲存的消息就行某種處理，產(chǎn)生一種類似于傳統(tǒng)手書簽名功效的消息處理過程，一個數(shù)字簽名體制通常包括兩個部分，（）
A.施加簽名和驗(yàn)證簽名
B.數(shù)字證書和身份認(rèn)證
C.身份消息加密和解密
D.數(shù)字證書和消息摘要查看答案
試題參考答案：A
試題4
入侵取證是指通過特定的軟件和工具，從計算機(jī)及網(wǎng)絡(luò)系統(tǒng)中提取攻擊證據(jù)。以下網(wǎng)絡(luò)安全取證步驟正確的是（ ）。
A．取證現(xiàn)場保護(hù)-證據(jù)識別-保存證據(jù)-傳輸證據(jù)-分析證據(jù)-提交證據(jù)
B．取證現(xiàn)場保護(hù)-證據(jù)識別-傳輸證據(jù)-保存證據(jù)-分析證據(jù)-提交證據(jù)
C．取證現(xiàn)場保護(hù)-保存證據(jù)-證據(jù)識別-傳輸證據(jù)-分析證據(jù)-提交證據(jù)
D．取證現(xiàn)場保護(hù)-證據(jù)識別-提交證據(jù)-傳輸證據(jù)-保存證據(jù)-分析證據(jù)查看答案
試題參考答案：B
試題5
網(wǎng)絡(luò)流量數(shù)據(jù)挖掘分析是對采集到的網(wǎng)絡(luò)流量數(shù)據(jù)進(jìn)行挖掘，提取網(wǎng)絡(luò)流量信息，形成網(wǎng)絡(luò)審計記錄。網(wǎng)絡(luò)流量數(shù)據(jù)挖掘分析主要包括：郵件收發(fā)協(xié)議審計、網(wǎng)頁瀏覽審計、文件共享審計、文件傳輸審計、遠(yuǎn)程訪問審計等。其中文件傳輸審計主要針對（ ）協(xié)議。
A．SMTP
B．FTP
C．Telnet
D．HTTP查看答案
試題參考答案：B
試題6
SMTP是一種提供可靠有效的電子郵件傳輸?shù)膮f(xié)議，采用客戶服務(wù)器的工作方式，在傳輸層使用TCP協(xié)議進(jìn)行傳輸。SMTP發(fā)送協(xié)議中，傳送報文文本的指令是（） 。
A.HELO
B.HELP
C.SEND
D.DATA查看答案
試題參考答案：D
試題7
P2DR模型是一種體現(xiàn)主動防御思想的網(wǎng)絡(luò)安全模型，該模型中D表示（ ）。
A. Design（設(shè)計）
B. Detection（檢測）
C. Defense（防御）
D. Defend（保護(hù)）查看答案
試題參考答案：B
試題8
防火墻的安全規(guī)則由匹配條件和處理方式兩部分組成。當(dāng)網(wǎng)絡(luò)流量與當(dāng)前的規(guī)則匹配時，就必須采用規(guī)則中的處理方式進(jìn)行處理。其中，拒絕數(shù)據(jù)包或信息通過，并且通 知信息源該信息被禁止的處理方式是（ ）。
A. Accept
B. Reject
C. Refuse
D. Drop查看答案
試題參考答案：B
試題9
從對信息的破壞性上看，網(wǎng)絡(luò)攻擊可以分為被動攻擊和主動攻擊，以下屬于被動攻擊的是( )。
A．拒絕服務(wù)
B．竊聽
C．偽造
D．中間人攻擊查看答案
試題參考答案：B
試題10
研究密碼破譯的科學(xué)稱為密碼分析學(xué)。密碼分析學(xué)中，根據(jù)密碼分析者可利用的數(shù)據(jù)資源，可將攻擊密碼的類型分為四種，其中適于攻擊公開密鑰密碼體制，特別是攻擊其數(shù)字簽名的是 （ ）。
A、僅知密文攻擊
B、已知明文攻擊
C、選擇密文攻擊
D、選擇明文攻擊查看答案
試題參考答案：C
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