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信息安全工程師每日一練試題內(nèi)容（2026/4/26）
試題1
在網(wǎng)絡(luò)安全等級(jí)保護(hù)標(biāo)準(zhǔn)2.0的可信驗(yàn)證實(shí)施框架中，當(dāng)檢測(cè)到系統(tǒng)或應(yīng)用程序的可信性受到破壞時(shí)，系統(tǒng)會(huì)如何響應(yīng)？
A． 僅進(jìn)行內(nèi)部日志記錄，不采取任何外部行動(dòng)
B． 立即停止所有網(wǎng)絡(luò)服務(wù)，以防止進(jìn)一步損害
C． 報(bào)警并將驗(yàn)證結(jié)果形成審計(jì)記錄送至安全管理中心
D． 自動(dòng)修復(fù)受損的系統(tǒng)或應(yīng)用程序查看答案
試題參考答案：C
試題2
在信息安全行業(yè)中，全同態(tài)加密技術(shù)的最大優(yōu)勢(shì)是（ ）
A． 提高數(shù)據(jù)傳輸速度
B． 簡(jiǎn)化加密解密過程
C． 允許在不泄露信息的情況下對(duì)數(shù)據(jù)進(jìn)行處理
D． 增強(qiáng)數(shù)據(jù)的完整性驗(yàn)證查看答案
試題參考答案：C
試題3
能有效控制內(nèi)部網(wǎng)絡(luò)和外部網(wǎng)絡(luò)之間的訪問及數(shù)據(jù)傳輸，從而達(dá)到保護(hù)內(nèi)部網(wǎng)絡(luò)的信息不受外部非授權(quán)用戶的訪問和對(duì)不良信息的過濾的安全技術(shù)是( )
A.入侵檢測(cè)
B.反病毒軟件
C.防火墻
D.計(jì)算機(jī)取證查看答案
試題參考答案：C
試題4
The Cybersecurity Level Protection 2.0 Standard strengthens the requirements for the use of trusted computing technologies, with additional "trusted verification" control points at each level. Among them, （ ） requires trusted verification of the device's system boot programs, system programs, and the like,
A. Level 3
B. Level 4
C. Level 1
D. Level 2查看答案
試題參考答案：C
試題5
在工業(yè)控制系統(tǒng)中，為確保資產(chǎn)安全，以下哪項(xiàng)措施是首要任務(wù)？
A．立即安裝最新的安全補(bǔ)丁
B．建設(shè)工業(yè)控制系統(tǒng)資產(chǎn)清單并明確責(zé)任人
C．對(duì)所有設(shè)備進(jìn)行冗余配置
D．部署防病毒軟件查看答案
試題參考答案：B
試題6
關(guān)于狀態(tài)防火墻處理包流程時(shí)的操作不正確的是（ ）
A．檢查數(shù)據(jù)包的有效性之前需要先查找會(huì)話表
B．查找會(huì)話表時(shí)，若找到，則進(jìn)一步檢查數(shù)據(jù)包的序列號(hào)和會(huì)話狀態(tài)
C．?dāng)?shù)據(jù)包若無效，則丟掉數(shù)據(jù)包并審計(jì)
D．當(dāng)會(huì)話表中沒有新到的數(shù)據(jù)包信息時(shí)，則查找策略表查看答案
試題參考答案：A
試題7
Perhaps the most obvious difference between private-key and public-key encryption is that the former assumes complete secrecy of all cry to graphic keys, whereas the latter requires secrecy for only the private key.Although this may seem like a minor distinction ,the ramifications are huge: in the private-key setting the communicating parties must somehow be able to share the (71) key without allowing any third party to learn it, whereas in the public-key setting the (72) key can be sent from one party to the other over a public channel without compromising security.For parties shouting across a room or, more realistically , communicating over a public network like a phone line or then ternet, public-key encryption is the only option.
Another important distinction is that private-key encryption sch emesuse the (73) key for both encryption and decryption, whereas public key encryption schemes use (74) keys for each operation.That is public-key encryption is inherently as ymmetri C．This asymmetry in the public-key setting means that the roles of sender and receiver are not interchangeable as they are in the private-key setting; a single key-pair allows communication in one direction only.(Bidirectional communication can be achieved in a number of ways; the point is that a single invocation of a public-key encryption scheme forces ad is tinction between one user who acts as a receiver and other users who act as senders.)。In addition, a single instance of a (75) encryption scheme enables multiple senders to communicate privately with a single receiver,in contrast to the private-key case where a secret key shared between two parties enables private communication only between those two parties.
(1) A．main
B．same
C．public
D．secret
(2) A．stream
B．different
C．public
D．secret
(3) A．different
B．same
C．public
D．private
(4) A．different
B．same
C．public
D．private
(5) A．private-key
B．public-key
C．stream
D．Hash查看答案
試題參考答案：D、C、B、A、B
試題8
（ ）攻擊方式可能通過利用TCP/IP協(xié)議漏洞來實(shí)。
A．虛擬機(jī)逃逸
B．拒絕服務(wù)攻擊
C．虛擬機(jī)鏡像污染
D．跨站腳本攻擊查看答案
試題參考答案：B
試題9
利用公開密鑰算法進(jìn)行數(shù)據(jù)加密時(shí)，采用的方法是( )
A、發(fā)送方用公開密鑰加密，接收方用公開密鑰解密
B、發(fā)送方用私有密鑰加密，接收方用私有密鑰解密
C、發(fā)送方用公開密鑰加密，接收方用私有密鑰解密
D、發(fā)送方用私有密鑰加密，接收方用公開密鑰解密查看答案
試題參考答案：C
試題10
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
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