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信息安全工程师每日一练试题(2022/7/19)
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信息安全工程师每日一练试题内容(2022/7/19)

  • 试题1

    防火墙作为一种被广泛使用的网络安全防御技术,其自身有一些限制,它不能阻止()
    A、内部威胁和病毒威胁
    B、外部攻击
    C、外部攻击、外部威胁和病毒威胁
    D、外部攻击和外部威胁

    查看答案

    试题参考答案:A

    试题解析与讨论:www.cnitpm.com/st/2845123602.html

  • 试题2

    在以下网络威胁中,()不属于信息泄露
    A、数据窃听
    B、流量分析
    C、偷窃用户账户
    D、暴力破解

    查看答案

    试题参考答案:D

    试题解析与讨论:www.cnitpm.com/st/2845612952.html

  • 试题3

    以下关于IPSec协议的叙述中,正确的是()
    A、IPSec协议是解决IP协议安全问题的一种方案
    B、IPSec协议不能提供完整性
    C、IPSec协议不能提供机密性保护
    D、IPSec协议不能提供认证功能

    查看答案

    试题参考答案:A

    试题解析与讨论:www.cnitpm.com/st/2849818821.html

  • 试题4

    物理安全是计算机信息系统安全的前提,物理安全主要包括场地安全、设备安全和介质安全。以下属于介质安全的是(  )。
    A.抗电磁干扰
    B.防电磁信息泄露
    C.磁盘加密技术
    D.电源保护

    查看答案

    试题参考答案:C

    试题解析与讨论:www.cnitpm.com/st/411378913.html

  • 试题5

    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)designs which have been designated cryptography standards by the US government (though DES's designation was finally withdrawn after the AES was adopted).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6

    信息通过网络进行传输的过程中,存在着被篡改的风险,为了解决这一安全问题,通常采用的安全防护技术是()
    A、加密技术
    B、匿名技术
    C、消息认证技术
    D、数据备份技术

    查看答案

    试题参考答案:C

    试题解析与讨论:www.cnitpm.com/st/2848216282.html

  • 试题7

    以下恶意代码中,属于宏病毒的是()
    A. Macro.Melissa
    B. Trojian.huigezi.a
    C. Worm.Blaster.g
    D. Backdoor.Agobot.frt

    查看答案

    试题参考答案:A

    试题解析与讨论:www.cnitpm.com/st/327144885.html

  • 试题8

    如果对一个密码体制的破译依赖于对某一个经过深入研究的数学难题的解决,就认为相应的密码体制是(  )的。
    A.计算安全
    B.可证明安全
    C.无条件安全
    D.绝对安全

    查看答案

    试题参考答案:B

    试题解析与讨论:www.cnitpm.com/st/411494857.html

  • 试题9

    X.509数字证书的内容不包括()。
    A.版本号
    B.签名算法标识
    C.加密算法标识
    D.主体的公开密钥信息

    查看答案

    试题参考答案:C

    试题解析与讨论:www.cnitpm.com/st/327479174.html

  • 试题10

    信息系统安全测评方法中模糊测试是一种黑盒测试技术,它将大量的畸形数据输入到目标程序中,通过监测程序的异常来发现被测程序中可能存在的安全漏洞、关于模糊测试,一下说法错误的是()
    A.与白盒测试相比,具有更好的适用性
    B.模糊测试是一种自动化的动态漏洞挖掘技术,不存在误报,也不需要人工进行大量的逆向分析工作
    C.模糊测试不需要程序的源代码就可以发现问题
    D.模糊测试受限于被测系统的内部实现细节和复杂度

    查看答案

    试题参考答案:D

    试题解析与讨论:www.cnitpm.com/st/326969266.html

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