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網(wǎng)絡(luò)工程師每日一練試題(2022/11/23)
來源:信管網(wǎng) 2022年11月24日 【所有評論 分享到微信

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網(wǎng)絡(luò)工程師每日一練試題內(nèi)容(2022/11/23)

  • 試題1

    使用traceroute命令測試網(wǎng)絡(luò)時可以(  )。
    A.檢驗鏈路協(xié)議是否運行正常
    B.檢驗?zāi)繕?biāo)網(wǎng)絡(luò)是否在路由表中
    C.查看域名解析服務(wù)
    D.顯示分組到達(dá)目標(biāo)路徑上經(jīng)過的各個路由器

    查看答案

    試題參考答案:D

    試題解析與討論:www.jazzmuze.com/st/4188529942.html

  • 試題2

    使用白盒測試時,確定測試數(shù)據(jù)應(yīng)根據(jù)(  )指定覆蓋準(zhǔn)則。
    A.程序的內(nèi)部邏輯
    B.程序的復(fù)雜程度
    C.使用說明書
    D.程序的功能

    查看答案

    試題參考答案:A

    試題解析與討論:www.jazzmuze.com/st/4495824626.html

  • 試題3

    ADSL 采用多路復(fù)用技術(shù)是 (1) ,最大傳輸距離可達(dá) (2) 米。
    (1)A、TDM
    B、FDM
    C、WDM
    D、CDMA
    (2)A、500
    B、1000
    C、5000
    D、10000

    查看答案

    試題參考答案:B、C

    試題解析與討論:www.jazzmuze.com/st/84912924.html

  • 試題4

    傳輸層的主要任務(wù)是完成(?。?br />
    A.進(jìn)程通信服務(wù)
    B.網(wǎng)絡(luò)連接服務(wù)
    C.路徑選擇服務(wù)
    D.子網(wǎng)一子網(wǎng)連接服務(wù)

    查看答案

    試題參考答案:A

    試題解析與討論:www.jazzmuze.com/st/317135999.html

  • 試題5

    宏病毒可以感染后綴為()的文件。
    A.exe
    B.txt
    C.pdf
    D.Xls

    查看答案

    試題參考答案:D

    試題解析與討論:www.jazzmuze.com/st/23943630.html

  • 試題6

    Let us now see how randomization is done when a collision occurs . After a (1), time is divided into discrete slots whose length is equal to the worst-case round-trip propagation time on ether. To accommodate the longest path allowed by Ethernet, the slot time has been set to 512 bit times, or 51.2us.
    After the first collision, each station waits either 0 or 1 (2) times before trying again. If two stations collide and each one picks the same random number, they will collide again. After the second collision, each one picks either 0,1,2 or 3 at random and waits that number of slot times. If a third collision occurs (the probability of this happening is 0.25), then the next time the number of slots to wait is chosen at (3) from the interval 0 to 23-1.
    In general, after I collisions, a random number between 0 and 2i -1 is chosen, and that number of slots is skipped. However, after ten collisions have been reached, the randomization (4) is frozen at a maximum of 1023 slots. After 16 collisions, the controller throws in the towel and reports failure back to the computer. Further recoveries up to (5) layers.

    (1)A.datagram
     B.collision
     C.connection
    D.service
    (2)A.slot
     B.switch
     C.process
     D.fire
    (3)A.rest
     B.random
     C.once
     D.odds
    (4)A.unicast
     B.multicast
     C.broadcast
     D.interval
    (5)A.local
     B.next
     C.higher
     D.lower

    查看答案

    試題參考答案:B、A、B、D、C

    試題解析與討論:www.jazzmuze.com/st/2344912465.html

  • 試題7

     關(guān)于網(wǎng)絡(luò)安全管理的描述中,正確的是( ?。?。
    A.能夠恢復(fù)全部被破壞的數(shù)據(jù)
    B. 快速反擊入侵者
    C. 提供單層防衛(wèi)手段
    D. 維護(hù)安全日志

    查看答案

    試題參考答案:D

    試題解析與討論:www.jazzmuze.com/st/314457054.html

  • 試題8

    A virtual (  ) network, or VPN, is an encrypted connection over the Internet from a device to a network. The encrypted connection helps ensure that sensitive data is safely (  ). It prevents (  ) people from eavesdropping on the traffic and allows the user to conduct work remotely. Traffic on the virtual network is sent securely by establishing an encrypted connection across the Internet known as a (  ).A remote access VPN securely connects a device outside the corporate office. A site-to-site VPN connects the corporate office to branch offices over the Internet. Site-to-site VPNs are used when distance makes it impractical to have direct network connections between these offices. Think of site-to-site access as (  ) to network.
    (1)A. public
    B. private
    C. personal
    D. proper
    (2)A. encoded
    B. encrypted
    C. stored
    D. transmitted
    (3)A. employed
    B. authorized
    C. unauthorized
    D. criminal
    (4)A. channel
    B. path
    C. tunnel
    D. route
    (5)A. network
    B. device
    C. computer
    D. endpoin

    查看答案

    試題參考答案:B、D、C、C、A

    試題解析與討論:www.jazzmuze.com/st/4189813956.html

  • 試題9

    網(wǎng)絡(luò)系統(tǒng)設(shè)計過程中,物理網(wǎng)絡(luò)設(shè)計階段的任務(wù)是( )。
    A.依據(jù)邏輯網(wǎng)絡(luò)設(shè)計的要求,確定設(shè)備的具體物理分布和運行環(huán)境
    B.分析現(xiàn)有網(wǎng)絡(luò)和新網(wǎng)絡(luò)的各類資源分布,掌握網(wǎng)絡(luò)所處的狀態(tài)
    C.根據(jù)需求規(guī)范和通信規(guī)范,實施資源分配和安全規(guī)劃
    D.理解網(wǎng)絡(luò)應(yīng)該具有的功能和性能,最終設(shè)計出符合用戶需求的網(wǎng)絡(luò)

    查看答案

    試題參考答案:A

    試題解析與討論:www.jazzmuze.com/st/1308323231.html

  • 試題10

    下列 ( ) 命令可以更改一個文件的權(quán)限設(shè)置。
    A、attrib
    B、file
    C、chmod
    D、change

    查看答案

    試題參考答案:C

    試題解析與討論:www.jazzmuze.com/st/85622948.html

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