分享到微信
信息安全工程师当天每日一练试题地址：www.cnitpm.com/exam/ExamDay.aspx?t1=6
往期信息安全工程师每日一练试题汇总：www.cnitpm.com/class/27/e6_1.html
信息安全工程师每日一练试题（2024/2/21）在线测试：www.cnitpm.com/exam/ExamDay.aspx?t1=6&day=2024/2/21
点击查看：更多信息安全工程师习题与指导
信息安全工程师每日一练试题内容（2024/2/21）
试题1
甲不但怀疑乙发给他的被人篡改，而且怀疑乙的公钥也是被人冒充的，为了消除甲的疑虑，甲和乙决定找一个双方都信任的第三方来签发数字证书，这个第三方为（）
A、国际电信联盟电信标准分部（ITU-T）
B、国家安全局（NSA）
C、认证中心（CA）
D、国家标准化组织（ISO）查看答案
试题参考答案：C
试题2
在访问因特网时,为了防止WEB页面中恶意代码对自己计算机的损害,可以采取的防范措施是（ ）。
A.将要访问的Web站点按其可信度分配到浏览器的不同安全区域
B.利用SSL访问Web站点
C.在浏览器中安装数字证书
D.利用IP安全协议访问Web站点查看答案
试题参考答案：A
试题3
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)designs which have been designated cryptography standards by the US government (though DES's designation was finally withdrawn after the AES was adopted).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4
按照行为和功能特性，特洛伊木马可以分为远程控制型木马、信息窃取型木马和破坏型木马等。以下不属于远程控制型木马的是（）。
A、冰河
B.彩虹桥
C.PC Share
D.Trojan-Ransom查看答案
试题参考答案：D
试题5
中间人攻击就是在通信双方毫无察觉的情况下，通过拦截正常的网络通信数据，进而对数据进行嗅探或篡改。以下属于中间人攻击的是（ ）。
A.DNS欺骗
B.社会工程攻击
C.网络钓鱼
D.旁注攻击查看答案
试题参考答案：A
试题解析与讨论：www.cnitpm.com/st/411318971.html
试题6
2017年11月,在德国柏林召开的第55次ISO/IEC信息安全分技术委员会(SC27)会议上,我国专家组提出的（ ）算法一致通过成为国际标准。
A.SM2与SM3
B.SM3与SM4
C.SM4与SM9
D.SM9与SM2查看答案
试题参考答案：D
试题7
IPSec属于（ ）的安全解决方案。
A.网络层
B.传输层
C.应用层
D.物理层查看答案
试题参考答案：A
试题8
针对电子邮件的安全问题，人们利用PGP(Pretty Good Privacy)来保护电子邮件的安全。以下有关PGP的表述，错误的是( )。
A．PGP的密钥管理采用RSA
B．PGP的完整性检测采用MD5
C．PGP的数字签名采用RSA
D．PGP的数据加密采用DES查看答案
试题参考答案：D
试题9
面向身份信息的认证应用中，最常用的认证方法是（）
A、基于数据库的认证
B、基于摘要算法认证
C、基于PKI认证
D、基于账户名/口令认证查看答案
试题参考答案：D
试题10
电子邮件系统的邮件协议有发送协议SMTP和接收协议POP3/IMAP4。SMTP发送协议中，发送身份标识的指令是（ ）。
A. SEND
B. HELP
C. HELO
D. SAML查看答案
试题参考答案：C
信管网订阅号
信管网视频号
信管网抖音号
温馨提示：因考试政策、内容不断变化与调整，信管网网站提供的以上信息仅供参考，如有异议，请以权威部门公布的内容为准！
信管网致力于为广大信管从业人员、爱好者、大学生提供专业、高质量的课程和服务，解决其考试证书、技能提升和就业的需求。
信管网软考课程由信管网依托10年专业软考教研倾力打造，教材和资料参编作者和资深讲师坐镇，通过深研历年考试出题规律与考试大纲，深挖核心知识与高频考点，为学员考试保驾护航。面授、直播＆录播，多种班型灵活学习，满足不同学员考证需求，降低课程学习难度，使学习效果事半功倍。
相关内容
| 发表评论 查看完整评论 | |
考试新手指南
学习计划攻略
精华备考资料
案例论文干货
章节模拟试题
免费试听课程
考试信息推送