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信息安全工程师每日一练试题内容（2020/10/30）

试题1： IPSec属于（  ）的安全解决方案。
A.网络层
B.传输层
C.应用层
D.物理层
试题解析与讨论：www.cnitpm.com/st/4113621566.html
试题参考答案：A

试题2：

AES结构由以下4个不同的模块组成，其中（）是非线性模块
A、字节代换
B、行移位
C、列混淆
D、轮密钥加

试题解析与讨论：www.cnitpm.com/st/2851110456.html
试题参考答案：A

试题3：

下列关于信息系统生命周期中实施阶段所涉及主要安全需求描述错误的是：（）
A．确保采购定制的设备、软件和其他系统组件满足已定义的安全要求
B．确保整个系统已按照领导要求进行了部署和配置
C．确保系统使用人员已具备使用系统安全功能和安全特性的能力
D．确保信息系统的使用已得到授权

试题解析与讨论：www.cnitpm.com/st/2572924991.html
试题参考答案：B

试题4：

以下关于信息安全工程说法正确的是：（）
A.信息化建设中系统功能的实现是最重要的
B．信息化建设可以先实施系统，而后对系统进行安全加固
C．信息化建设中在规划阶段合理规划信息安全，在建设阶段要同步实施信息安全建设
D．信息化建设没有必要涉及信息安全建设

试题解析与讨论：www.cnitpm.com/st/2574920800.html
试题参考答案：

试题5：

以下哪些不属于敏感性标识（）
A.不干贴方式
B.印章方式
C.电子标签
D.个人签名

试题解析与讨论：www.cnitpm.com/st/2607820461.html
试题参考答案：D

试题6：

对恶意代码的预防，需要采取增强安全防范策略与意识等措施，关于以下预防措施或意识，说法错误的是：（）
A．在使用来自外部的移动介质前，需要进行安全扫描
B．限制用户对管理员权限的使用
C．开放所有端口和服务，充分使用系统资源
D．不要从不可信来源下载或执行应用程序

试题解析与讨论：www.cnitpm.com/st/2570110865.html
试题参考答案：C

试题7：

信息系统的业务特性应该从哪里获取?（）
A．机构的使命
B．机构的战略背景和战略目标
C．机构的业务内容和业务流程
D．机构的组织结构和管理制度

试题解析与讨论：www.cnitpm.com/st/2571219255.html
试题参考答案：B

试题8： 强制访问控制(MAC)可通过使用敏感标签对所有用户和资源强制执行安全策略。 MAC中用户访问信息的读写关系包括下读、上写、下写和上读四种，其中用户级别高于文件级别的读写操作是 （  ）。
A.下读
B.上写
C.下写
D.上读
试题解析与讨论：www.cnitpm.com/st/4110411018.html
试题参考答案：C

试题9：

通过向被攻击者发送大量的ICMP 回应请求，消耗被攻击者的资源来进行响应，直至被攻击者再也无法处理有效的网络信息流时，这种攻击称之为：（）
A．Land 攻击
B．Smurf 攻击
C．Ping of Death 攻击
D．ICMP Flood

试题解析与讨论：www.cnitpm.com/st/257053690.html
试题参考答案：D

试题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
试题解析与讨论：www.cnitpm.com/st/389944612.html
试题参考答案：D、C、A、B、A