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信息安全工程師每日一練試題（2024/5/12）

來源：信管網(wǎng) 2024年05月13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（2024/5/12）

試題1
從網(wǎng)絡(luò)安全的角度看，以下原則中不屬于網(wǎng)絡(luò)安全防護(hù)體系在設(shè)計(jì)和實(shí)現(xiàn)時(shí)需要遵循的基本原則的是（）。
A.最小權(quán)限原則
B.縱深防御原則
C.安全性與代價(jià)平衡原則
D.Kerckhoffs原則
查看答案
試題參考答案：D
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題2
特洛伊木馬攻擊的威脅類型屬于（）。
A.旁路控制威脅
B.網(wǎng)絡(luò)欺騙
C.植入威脅
D.授權(quán)侵犯威脅
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試題參考答案：C
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題3
1949年，（）發(fā)表了題為《保密系統(tǒng)的通信理論》的文章，為密碼技術(shù)的研究奠定了理論基礎(chǔ)，由此密碼學(xué)成了一門科學(xué)。
A.Shannon
B.Diffie
C.Hellman
D.Shamir
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試題參考答案：A
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題4
在Linux系統(tǒng)中，可用（）工具檢查進(jìn)程使用的文件、TCP／UDP端口、用戶等相關(guān)信息。
A．ps
B．lsof
C．top
D．pwck
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試題參考答案：B
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題5

以下不屬于網(wǎng)絡(luò)安全控制技術(shù)的是（）
A、防火墻技術(shù)
B、訪問控制
C、入侵檢測技術(shù)
D、差錯(cuò)控制
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試題參考答案：D
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題6
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)designs which have been designated cryptography standards by the US government (though DES's designation was finally withdrawn after the AES was adopted).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
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試題參考答案：A、D、C、B、A
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題7
以下關(guān)于公鑰基礎(chǔ)設(shè)施（PKI）的說法中，正確的是（）
A. PKI可以解決公鑰可信性問題
B. PKI不能解決公鑰可信性問題
C. PKI只能有政府來建立
D.PKI不提供數(shù)字證書查詢服務(wù)
查看答案
試題參考答案：A
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題8
下列關(guān)于數(shù)字簽名的說法正確的是（）
A.數(shù)字簽名是不可信的
B.數(shù)字簽名容易被偽造
C.數(shù)字簽名容易抵賴
D.數(shù)字簽名不可改變
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試題參考答案：D
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題9
SSL協(xié)議（安全套接層協(xié)議）是Netscape公司推出的一種安全通信協(xié)議，以下服務(wù)中，SSL協(xié)議不能提供的是（）。
A.用戶和服務(wù)器的合法性認(rèn)證服務(wù)
B.加密數(shù)據(jù)服務(wù)以隱藏被傳輸?shù)臄?shù)據(jù)
C.維護(hù)數(shù)據(jù)的完整性
D.基于UDP應(yīng)用的安全保護(hù)
查看答案
試題參考答案：D
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12
試題10

以下關(guān)于隧道技術(shù)說法不正確的是（）
A、隧道技術(shù)可以用來解決TCP/IP協(xié)議的某種安全威脅問題
B、隧道技術(shù)的本質(zhì)是用一種協(xié)議來傳輸另外一種協(xié)議
C、IPSec協(xié)議中不會(huì)使用隧道技術(shù)
D、虛擬專用網(wǎng)中可以采用隧道技術(shù)
查看答案
試題參考答案：C
試題解析與討論：m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=6&day=2024/5/12

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