信息安全工程師每日一練試題（2023/1/2）
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信息安全工程師每日一練試題內容（2023/1/2）
試題1
Snort是一款開源的網絡入侵檢測系統(tǒng)，它能夠執(zhí)行實時流量分析和IP協議網絡的數據包記錄。以下不屬于Snort配置模式的是（ ）。
A.嗅探
B.包記錄
C.分布式入侵檢測
D.網絡入侵檢測查看答案
試題參考答案：C
試題2
在使用復雜度不高的口令時，容易產生弱口令的安全脆弱性，被攻擊者利用從而破解用戶賬戶，下列設置的口令中，（）具有最好的口令復雜度。
A.morrison
B.Wm.S*F2m5@
C.27776394
D.wangjing1977查看答案
試題參考答案：B
試題3
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4
重放攻擊是指攻擊者發(fā)送一個目的主機已接收過的包，來達到欺騙系統(tǒng)的目的。下列技術中，不能抵御重放攻擊的是（）.
A.序號
B.明文填充
C.時間戳
D.Nonce查看答案
試題參考答案：B
試題5
計算機系統(tǒng)的安全級別分為四級：D、C（C1、C2）、B（B1、B2、B3）和A。其中被稱為選擇保護級的是（）
A. C1
B. C2
C. B1
D. B2查看答案
試題參考答案：A
試題6
對無線網絡的攻擊可以分為:對無線接口的攻擊、對無線設備的攻擊和對無線網絡的攻擊。以下屬于對無線設備攻擊的是（ ）。
A.竊聽
B.重放
C.克隆
D.欺詐查看答案
試題參考答案：C
試題7
根據密碼分析者可利用的數據資源來分類，可將密碼攻擊的類型分為四類，其中密碼分析者能夠選擇密文并獲得相應明文的攻擊密碼的類型屬于（）.
A.僅知密文攻擊
B.選擇密文攻擊
C.已知密文攻擊
D.選擇明文攻擊查看答案
試題參考答案：B
試題8
拒絕服務攻擊是指攻擊者利用系統(tǒng)的缺陷，執(zhí)行一些惡意的操作，使得合法的系統(tǒng)用戶不能及時得到應得的服務或系統(tǒng)資源。以下給出的攻擊方式中，不屬于拒絕服務攻擊的是（ ）
A．SYN Flood
B．DNS放大攻擊
C．SQL注入
D．淚滴攻擊查看答案
試題參考答案：C
試題9
已知DES算法S盒如下：
如果該S盒的輸入為010001，其二進制輸出為（ ）
A．0110
B．1001
C．0100
D．0101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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