信息安全工程师每日一练试题（2026/6/12）

2026年06月13日来源：信管网作者:cnitpm

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信息安全工程师每日一练试题内容（2026/6/12）

试题1
在网络审计数据存储技术中，为了便于事后查询分析和电子取证，通常采取哪种方式存储审计数据（）
A．由审计数据产生的系统各自分散存储，分别保存在操作系统、数据库、应用系统和网络设备等中。
B．只在操作系统中集中存储所有相关系统的审计数据。
C．集中采集各种系统的审计数据，并建立专门的审计数据存储服务器进行保存。
D．使用云存储服务，将审计数据分散存储在多个云服务提供商的服务器上。
查看答案
试题参考答案：C
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题2
与网络系统可持续性运营相关的工作不包括（）
A．网络运营持续性管理程序和网络运营制度
B．网络运营持续性应急方案
C．网络运营内部处理授权
D．网络运营持续性计划的检查、维护和重新分析
查看答案
试题参考答案：C
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题3
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/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题4
在运营商移动应用安全保护方案中，（）措施能够实时预警接入网络的异常流量和入侵攻击。
A．对运营商的计费SDK进行加固保护
B．对运营商的通信协议、证书进行加密
C．提供基于移动应用的威胁态势感知服务
D．加固运营商App及第三方App
查看答案
试题参考答案：C
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题5
华为云的数据存储服务如何确保数据的可靠性？
A．通过数据隔离
B．采用多副本备份和纠删码设计
C．依赖单一硬件存储模块
D．依靠数据加密服务
查看答案
试题参考答案：B
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题6
域名系统DNS的功能是把Internet中的主机域名解析为对应的IP地址，目前顶级域名(TLD)有国家顶级域名、国际顶级域名、通用顶级域名三大类。最早的顶级域名中，表示非营利组织域名的是( )
A.net
B.org
C.biz
D.mil

查看答案
试题参考答案：B
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题7

在PKI中，不属于CA的任务是( )
A、证书的颁发
B、证书的审改
C、证书的备份
D、证书的加密
查看答案
试题参考答案：D
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题8
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)designs which have been designated cryptography standards by the US government (though DES's designation was finally withdrawn after the AES was adopted).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/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题9
网络攻击行为分为主动攻击和被动攻击，主动攻击一般是指攻击者对被攻击信息的修改，而被动攻击主要是收集信息而不进行修改等操作，被动攻击更具有隐蔽性。以下网络攻击中，属于被动攻击的是（）。
A．重放攻击
B．假冒攻击
C．拒绝服务攻击
D．窃听
查看答案
试题参考答案：D
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12
试题10
（）是应对计算机病毒最有效的方法。
A．备份
B．数据修复技术
C．网络过滤技术
D．计算机病毒应急响应预案
查看答案
试题参考答案：A
试题解析与讨论：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2026/6/12

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