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信息安全工程師每日一練試題（2025/11/11）

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信息安全工程師每日一練試題內(nèi)容（2025/11/11）

試題1
操作系統(tǒng)的安全機(jī)制是指在操作系統(tǒng)中利用某種技術(shù)、某些軟件來(lái)實(shí)施一個(gè)或多個(gè)安全服務(wù)的過(guò)程。操作系統(tǒng)的安全機(jī)制不包括( )。
A.標(biāo)識(shí)與鑒別機(jī)制
B.訪(fǎng)問(wèn)控制機(jī)制
C.密鑰管理機(jī)制
D.安全審計(jì)機(jī)制
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題2
Symmetric-key cryptosystems use the( ) key for encryption and decryption of a message,though a message or group of messages may have a different key than others. A significant disadvantage of symmetric ciphers is the key management necessary to use them securely.Each distinct pair of communicating parties must, ideally, share a different key, and perhaps each ciphertext exchanged as well. The number of keys required increases as the square of the number of network members,which very quickly requires complex key management schemes to keep them all straight and secret. The difficulty of securely establishing a secret( )between two communicating parties, when a secure channel doesn't already exist between them, also presents a chicken-and-egg problem which is a considerable practical obstacle for cryptography users in the real world.
Whitfield Dif?ie and Martin Hellman, authors of the first paper on public-key cryptography.
In a groundbreaking 1976 paper, Whitfield Diffie and Martin Hellman proposed the notion of public-key (also, more generally, called asymmetric key) cryptography in which two different but mathematically related keys are used-a public key and a private key. A public key system is so constructed that calculation of one key (the private key) is computationally infeasible( )the other (the public key), even though they are necessarily related. Instead, both keys are generated secretly, as an interrelated pair. The historian David Kahn described public-key cryptography as “the most revolutionary new concept in the field since poly-alphabetic substitution emerged in the Renaissance”.
In public-key cryptosystems,the( )key may be freely distributed,while its paired private key must remain secret. The public key is typically used for encryption, while the private or secret key is used for decryption. Diffie and Hellman showed that public-key cryptography was possible by presenting the Diffie-Hellman key exchange protocol.
In 1978, Ronald Rivest, Adi Shamir, and Len Adleman invented( ),another public-key system.
In 1997, it finally became publicly known that asymmetric key cryptography had been invented by James H. Ellis at GCHQ,a British intelligence organization, and that, in the early 1970s,both the Diffie-Hellman and RSA algorithms had been previously developed(by Malcolm J. Williamson and Clifford Cocks, respectively).
(1) A. different
B. same
C.public
D. private
(2)A. plaintext
B. stream
C.ciphertext
D.key
(3)A.from
B. in
C.to
D.of
(4)A.public
B.private
C.symmetric
D.asymmetric
(5) A.DES
B.AES
C.RSA
D.IDEA
查看答案
試題參考答案：B、D、A、A、C
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題3
以下關(guān)于BLP安全模型的表述中，錯(cuò)誤的是( )
A.BLP模型既有自主訪(fǎng)問(wèn)控制，又有強(qiáng)制訪(fǎng)問(wèn)控制
B.BLP模型是一個(gè)嚴(yán)格形式化的模型，并給出了形式化的證明
C.BLP模型控制信息只能由高向低流動(dòng)
D.BLP是一種多級(jí)安全策略模型
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題4
能有效控制內(nèi)部網(wǎng)絡(luò)和外部網(wǎng)絡(luò)之間的訪(fǎng)問(wèn)及數(shù)據(jù)傳輸，從而達(dá)到保護(hù)內(nèi)部網(wǎng)絡(luò)的信息不受外部非授權(quán)用戶(hù)的訪(fǎng)問(wèn)和對(duì)不良信息的過(guò)濾的安全技術(shù)是( )
A.入侵檢測(cè)
B.反病毒軟件
C.防火墻
D.計(jì)算機(jī)取證
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題5
密碼分析的目的是( )
A.發(fā)現(xiàn)加密算法
B.發(fā)現(xiàn)密鑰或者密文對(duì)應(yīng)的明文
C.發(fā)現(xiàn)解密算法
D.發(fā)現(xiàn)攻擊者
查看答案
試題參考答案：B
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題6
核心密碼保護(hù)信息的最高密級(jí)為（）
A．機(jī)密級(jí)
B．絕密級(jí)
C．秘密
D．國(guó)家秘密級(jí)
查看答案
試題參考答案：B
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題7
無(wú)線(xiàn)傳感器網(wǎng)絡(luò)WSN是由部署在監(jiān)測(cè)區(qū)域內(nèi)大量的廉價(jià)微型傳感器節(jié)點(diǎn)組成，通過(guò)無(wú)線(xiàn)通信方式形成的一個(gè)多跳的自組織網(wǎng)絡(luò)系統(tǒng)。以下針對(duì)WSN安全問(wèn)題的描述中，錯(cuò)誤的（）。
A.通過(guò)頻率切換可以有效抵御WSN物理層的電子干擾攻擊
B.WSN鏈路層容易受到拒絕服務(wù)攻擊
C.分組密碼算法不適合在WSN中使用
D.蟲(chóng)洞攻擊是針對(duì)WSN路由層的一種網(wǎng)絡(luò)攻擊形式
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題8
（）攻擊方式可能通過(guò)利用TCP/IP協(xié)議漏洞來(lái)實(shí)。
A．虛擬機(jī)逃逸
B．拒絕服務(wù)攻擊
C．虛擬機(jī)鏡像污染
D．跨站腳本攻擊
查看答案
試題參考答案：B
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題9
以下（）不是識(shí)別邏輯炸彈攻擊的有效方法？
A．定期檢查程序代碼以發(fā)現(xiàn)不尋常的代碼段
B．監(jiān)控系統(tǒng)文件和數(shù)據(jù)的異常變化
C．使用防火墻阻止所有外部流量
D．留意系統(tǒng)性能的異常下降
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題10
在進(jìn)行移動(dòng)應(yīng)用App安全加固時(shí)，為了防止應(yīng)用被反編譯，以下哪種措施最為有效（）
A．加密網(wǎng)絡(luò)通信
B．設(shè)置復(fù)雜密碼
C．對(duì)應(yīng)用文件進(jìn)行加密和代碼混淆
D．強(qiáng)化訪(fǎng)問(wèn)控制機(jī)制
查看答案
試題參考答案：C
試題解析與討論：www.xcpkj.com/exam/ExamDay.aspx?t1=6&day=2025/11/11

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