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信息安全工程师每日一练试题内容(2023/5/27)
试题1
分组密码常用的工作模式包括:电码本模式(ECB模式)、密码反馈模式(CFB模式),密码分组链接模式(CBC模式),输出反馈模式(OFB模式)。下图描述的是( )模式(图中Pi表示明文分组,Ci表示密文分组)查看答案
试题参考答案:A
试题2
IIS是Microsoft 公司提供的Web服务器软件,主要提供Web服务。IIS的访问控制包括:请求过滤、URL 授权控制、IP地址限制、文件授权等安全措施,其中对文件夹的NTFS 许可权限管理属于( )。查看答案
试题参考答案:D
试题3
已知DES算法的S盒如下:
如果该S盒的输入110011,则其二进制输出为()
A、0110
B、1001
C、0100
D、0101
查看答案
试题参考答案:C
试题4
2018年10月,含有我国SM3杂凑算法的IS0/IEC10118-3: 2018《信息安全技术杂凑函数第3部分:专用杂凑函数》由国际标准化组织(ISO)发布,SM3算法正式成为国际标准。SM3的杂凑值长度为( )。查看答案
试题参考答案:C
试题5
查看答案
试题参考答案:C
试题6
现代操作系统提供的金丝雀(Canary)漏洞缓解技术属于 ( )查看答案
试题参考答案:C
试题7
There are different ways to perform IP based DoS Attacks. The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment (1)(e.g. TCP SYN requests) to establish hanging connections with the controller or a DPS. Such a way, the attacker can consume the network resources which should be available for legitimate users. In other (2), the attacker inserts a large amount of (3)packets to the data plane by spoofing all or part of the header fields with random values. These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources. In some cases, an (4)who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources. Moreover, the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.
Legacy mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment. Moreover, legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller. These features minimize both the impact and propagation of DoS attacks. Moreover, the legacy backhaul devices are controlled as a joint effort of multiple network element. For instance, a single Long Term Evilution(LTE)eNodeB is connected up to 32 MMEs. Therefore, DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device(5)the net work.
查看答案
试题参考答案:C、B、C、D、A
试题解析与讨论:www.cnitpm.com/st/32757467.html
试题8
SSL协议(安全套接层协议)是Netscape公司推出的一种安全通信协议,以下服务中,SSL协议不能提供的是( )。查看答案
试题参考答案:D
试题解析与讨论:www.cnitpm.com/st/411353400.html
试题9
Apache Httpd 是一个用于搭建Web 服务器的开源软件。Apache Httpd配置文件中,负责基本读取文件控制的是( )。查看答案
试题参考答案:C
试题解析与讨论:www.cnitpm.com/st/522904931.html
试题10
在Linux系统中,可用( )工具检查进程使用的文件、TCP/UDP端口、用户等相关信息。查看答案
试题参考答案:B
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