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信息安全工程师每日一练试题(2023/6/7)

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信息安全工程师每日一练试题内容(2023/6/7)

  • 试题1

    S/key口令是一种一次性口令生成方案,它可以对抗(  )。
    A.恶意代码攻击
    B.暴力分析攻击
    C.重放攻击
    D.协议分析攻击

    查看答案

    试题参考答案:C

    试题解析与讨论:www.cnitpm.com/st/3893028320.html

  • 试题2

    工业控制系统是由各种自动化控制组件和实时数据采集、监测的过程控制组件共同构成,工业控制系统安全面临的主要威胁不包括()
    A.系统漏洞
    B.网络攻击
    C.设备故障
    D.病毒破坏

    查看答案

    试题参考答案:C

    试题解析与讨论:www.cnitpm.com/st/5022913357.html

  • 试题3

    Kerberos是一种常用的身份认证协议,它采用的加密算法是(  )。
    A.Elgamal
    B.DES
    C.MD5
    D.RSA

    查看答案

    试题参考答案:B

    试题解析与讨论:www.cnitpm.com/st/3895128132.html

  • 试题4

    The modern study of symmetric-key ciphers relates mainly to the study of block ciphers and stream ciphers and to their applications. A block cipher is, in a sense, a modern embodiment of Alberti's polyalphabetic cipher: block ciphers take as input a block of (71 )and a key, and output a block of ciphertext of the same size. Since messages are almost always longer than a single block, some method of knitting together successive blocks is required. Several have been developed, some with better security in one aspect or another than others. They are the mode of operations and must be carefully considered when using a block cipher in a cryptosystem.
    The Data Encryption Standard (DES) and the Advanced Encryption Standard (AES) are( 72 )designs which have been designated cryptography standards by the US government (though DES's designation was finally withdrawn after the AES was adopted). Despite its deprecation as an official standard, DES (especially its still-approved and much more secure triple-DES variant) remains quite popular; it is used across a wide range of applications, from ATM encryption to e-mail privacy and secure remote access. Many other block ciphers have been designed and released, with considerable variation in quality. Many have been thoroughly broken. See Category: Block ciphers.
    Stream ciphers, in contrast to the ‘block’type, create an arbitrarily long stream of key material, which is combined ( 73 )the plaintext bit-by-bit or character-by-character, somewhat like the one-time pad. In a stream cipher, the output( 74 )is created based on an internal state which changes as the cipher operates. That state change is controlled by the key, and, in some stream ciphers, by the plaintext stream as well. RC4 is an example of a well-known, and widely used, stream cipher; see Category: Stream ciphers.
    Cryptographic hash functions (often called message digest functions) do not necessarily use keys, but are a related and important class of cryptographic algorithms. They take input data (often an entire message), and output a short fixed length hash, and do so as a one-way function. For good ones, ( 75 ) (two plaintexts which produce the same hash) are extremely difficult to find.
    Message authentication codes (MACs) are much like cryptographic hash functions, except that a secret key is used to authenticate the hash value on receipt. These block an attack against plain hash functions.
    (71)
    A.plaintext
    B.ciphertext
    C.data
    D.hash
    (72)
    A.stream cipher
    B.hash function
    C.Message authentication code
    D.Block cipher
    (73)
    A.of
    B.for
    C.with
    D.in
    (74)
    A.hash
    B.stream
    C.ciphertext
    D.plaintext
    (75)
    A.collisions
    B.image
    C.preimage
    D.solution

    查看答案

    试题参考答案:A、D、C、B、A

    试题解析与讨论:www.cnitpm.com/st/4115223167.html

  • 试题5

    SMTP是一种提供可靠有效的电子邮件传输的协议,采用客户服务器的工作方式,在传输层使用TCP协议进行传输。SMTP发送协议中,传送报文文本的指令是() 。
    A.HELO
    B.HELP
    C.SEND
    D.DATA

    查看答案

    试题参考答案:D

    试题解析与讨论:www.cnitpm.com/st/5019813386.html

  • 试题6

    以下关于网络钓鱼的说法中,不正确的是()
    A、网络钓鱼融合了伪装、欺骗等多种攻击方式
    B、网络钓鱼与Web服务没有关系
    C、典型的网络钓鱼攻击都将被攻击者引诱到一个通过精心设计的钓鱼网站上
    D、网络钓鱼是“社会工程攻击”是一种形式

    查看答案

    试题参考答案:B

    试题解析与讨论:www.cnitpm.com/st/2850019681.html

  • 试题7

    《计算机信息系统安全保护等级划分准则》中规定了计算机系统安全保护能力的五个等级,其中要求计算机信息系统可信计算机满足访问监控器需求的是()
    A.系统审计保护级
    B.安全标记保护级
    C.结构化保护级
    D.访问验证保护级

    查看答案

    试题参考答案:D

    试题解析与讨论:www.cnitpm.com/st/502184471.html

  • 试题8

    数字证书是一种由一个可信任的权威机构签署的信息集合。PKI中的X. 509数字证书的内容不包括(  )。
    A.版本号
    B.签名算法标识
    C.证书持有者的公钥信息
    D.加密算法标识

    查看答案

    试题参考答案:D

    试题解析与讨论:www.cnitpm.com/st/4111416014.html

  • 试题9

    由于Internet规模太大,常把它划分成许多小的自治系统,通常把自治系统内部的路由协议称为内部网关协议,自治系统之间的协议称为外部网关协议。以下属于外部网关协议的是()。
    A.RIP
    B.OSPF
    C.BGP
    D.UDP

    查看答案

    试题参考答案:C

    试题解析与讨论:www.cnitpm.com/st/5018223980.html

  • 试题10

    下面关于跨站攻击描述不正确的是()
    A.跨站脚本攻击指的是恶意攻击者向Web页面里插入恶意的Html代码
    B.跨站脚本攻击简称XSS
    C.跨站脚本攻击也可称作CSS
    D.跨站脚本攻击是主动攻击

    查看答案

    试题参考答案:D

    试题解析与讨论:www.cnitpm.com/st/3272822356.html

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