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信息安全工程師每日一練試題(2022/7/19)
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信息安全工程師每日一練試題內(nèi)容(2022/7/19)

  • 試題1

    防火墻作為一種被廣泛使用的網(wǎng)絡(luò)安全防御技術(shù),其自身有一些限制,它不能阻止()
    A、內(nèi)部威脅和病毒威脅
    B、外部攻擊
    C、外部攻擊、外部威脅和病毒威脅
    D、外部攻擊和外部威脅

    查看答案

    試題參考答案:A

    試題解析與討論:www.ichunya.com/st/2845123602.html

  • 試題2

    在以下網(wǎng)絡(luò)威脅中,()不屬于信息泄露
    A、數(shù)據(jù)竊聽(tīng)
    B、流量分析
    C、偷竊用戶(hù)賬戶(hù)
    D、暴力破解

    查看答案

    試題參考答案:D

    試題解析與討論:www.ichunya.com/st/2845612952.html

  • 試題3

    以下關(guān)于IPSec協(xié)議的敘述中,正確的是()
    A、IPSec協(xié)議是解決IP協(xié)議安全問(wèn)題的一種方案
    B、IPSec協(xié)議不能提供完整性
    C、IPSec協(xié)議不能提供機(jī)密性保護(hù)
    D、IPSec協(xié)議不能提供認(rèn)證功能

    查看答案

    試題參考答案:A

    試題解析與討論:www.ichunya.com/st/2849818821.html

  • 試題4

    物理安全是計(jì)算機(jī)信息系統(tǒng)安全的前提,物理安全主要包括場(chǎng)地安全、設(shè)備安全和介質(zhì)安全。以下屬于介質(zhì)安全的是(  )。
    A.抗電磁干擾
    B.防電磁信息泄露
    C.磁盤(pán)加密技術(shù)
    D.電源保護(hù)

    查看答案

    試題參考答案:C

    試題解析與討論:www.ichunya.com/st/411378913.html

  • 試題5

    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)designs which have been designated cryptography standards by the US government (though DES's designation was finally withdrawn after the AES was adopted).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

    試題參考答案:A、D、C、B、A

    試題解析與討論:www.ichunya.com/st/4115223167.html

  • 試題6

    信息通過(guò)網(wǎng)絡(luò)進(jìn)行傳輸?shù)倪^(guò)程中,存在著被篡改的風(fēng)險(xiǎn),為了解決這一安全問(wèn)題,通常采用的安全防護(hù)技術(shù)是()
    A、加密技術(shù)
    B、匿名技術(shù)
    C、消息認(rèn)證技術(shù)
    D、數(shù)據(jù)備份技術(shù)

    查看答案

    試題參考答案:C

    試題解析與討論:www.ichunya.com/st/2848216282.html

  • 試題7

    以下惡意代碼中,屬于宏病毒的是()
    A. Macro.Melissa
    B. Trojian.huigezi.a
    C. Worm.Blaster.g
    D. Backdoor.Agobot.frt

    查看答案

    試題參考答案:A

    試題解析與討論:www.ichunya.com/st/327144885.html

  • 試題8

    如果對(duì)一個(gè)密碼體制的破譯依賴(lài)于對(duì)某一個(gè)經(jīng)過(guò)深入研究的數(shù)學(xué)難題的解決,就認(rèn)為相應(yīng)的密碼體制是(  )的。
    A.計(jì)算安全
    B.可證明安全
    C.無(wú)條件安全
    D.絕對(duì)安全

    查看答案

    試題參考答案:B

    試題解析與討論:www.ichunya.com/st/411494857.html

  • 試題9

    X.509數(shù)字證書(shū)的內(nèi)容不包括()。
    A.版本號(hào)
    B.簽名算法標(biāo)識(shí)
    C.加密算法標(biāo)識(shí)
    D.主體的公開(kāi)密鑰信息

    查看答案

    試題參考答案:C

    試題解析與討論:www.ichunya.com/st/327479174.html

  • 試題10

    信息系統(tǒng)安全測(cè)評(píng)方法中模糊測(cè)試是一種黑盒測(cè)試技術(shù),它將大量的畸形數(shù)據(jù)輸入到目標(biāo)程序中,通過(guò)監(jiān)測(cè)程序的異常來(lái)發(fā)現(xiàn)被測(cè)程序中可能存在的安全漏洞、關(guān)于模糊測(cè)試,一下說(shuō)法錯(cuò)誤的是()
    A.與白盒測(cè)試相比,具有更好的適用性
    B.模糊測(cè)試是一種自動(dòng)化的動(dòng)態(tài)漏洞挖掘技術(shù),不存在誤報(bào),也不需要人工進(jìn)行大量的逆向分析工作
    C.模糊測(cè)試不需要程序的源代碼就可以發(fā)現(xiàn)問(wèn)題
    D.模糊測(cè)試受限于被測(cè)系統(tǒng)的內(nèi)部實(shí)現(xiàn)細(xì)節(jié)和復(fù)雜度

    查看答案

    試題參考答案:D

    試題解析與討論:www.ichunya.com/st/326969266.html

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