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信息安全工程師每日一練試題（2025/11/11）

來源：信管網(wǎng) 2025年11月12日【所有評論】

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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)、某些軟件來實(shí)施一個或多個安全服務(wù)的過程。操作系統(tǒng)的安全機(jī)制不包括( )。
A.標(biāo)識與鑒別機(jī)制
B.訪問控制機(jī)制
C.密鑰管理機(jī)制
D.安全審計機(jī)制
查看答案
試題參考答案：C
試題解析與討論：www.xomuzic.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.xomuzic.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，錯誤的是( )
A.BLP模型既有自主訪問控制，又有強(qiáng)制訪問控制
B.BLP模型是一個嚴(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
D.BLP是一種多級安全策略模型
查看答案
試題參考答案：C
試題解析與討論：www.xomuzic.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)之間的訪問及數(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)用戶的訪問和對不良信息的過濾的安全技術(shù)是( )
A.入侵檢測
B.反病毒軟件
C.防火墻
D.計算機(jī)取證
查看答案
試題參考答案：C
試題解析與討論：www.xomuzic.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.xomuzic.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題6
核心密碼保護(hù)信息的最高密級為（）
A．機(jī)密級
B．絕密級
C．秘密
D．國家秘密級
查看答案
試題參考答案：B
試題解析與討論：www.xomuzic.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題7
無線傳感器網(wǎng)絡(luò)WSN是由部署在監(jiān)測區(qū)域內(nèi)大量的廉價微型傳感器節(jié)點(diǎn)組成，通過無線通信方式形成的一個多跳的自組織網(wǎng)絡(luò)系統(tǒng)。以下針對WSN安全問題的描述中，錯誤的（）。
A.通過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.蟲洞攻擊是針對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.xomuzic.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題8
（）攻擊方式可能通過利用TCP/IP協(xié)議漏洞來實(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.xomuzic.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題9
以下（）不是識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.xomuzic.com/exam/ExamDay.aspx?t1=6&day=2025/11/11
試題10
在進(jìn)行移動應(yīng)用App安全加固時，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．對應(yīng)用文件進(jìn)行加密和代碼混淆
D．強(qiáng)化訪問控制機(jī)制
查看答案
試題參考答案：C
試題解析與討論：www.xomuzic.com/exam/ExamDay.aspx?t1=6&day=2025/11/11

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