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網(wǎng)絡(luò)工程師每日一練試題內(nèi)容(2023/12/30)
試題1
If two communicating entities are in different hosts connected by a network,there is a risk that PDUs will not arrive inthe order inwhich theywere sent , becausethey may traverse(70)paths through the network. If each PDUs is given a uniquenumber,andnumbersareassigned(71),thenit isa logicallysimpletaskforthereceivingentityto reorder(72 )PDUsonthebasisofsequence number.Aproblem with this scheme is that,with a(73)sequence number field, sequence number will repeat.Evidently , the maximumsequence numbermustbe(74)thanthemaximumnumber ofPDUsthatcouldbe outstandingat anytime.查看答案
試題參考答案:B、D、A、C、B
試題2
NAC’s(Network Access Control)role is to restrict network access to only compliant endpoints and (1) users. However, NAC is not a complete LAN (2) solution; additional proactive and (3) security measures must be implemented. Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 10Gbps, ensuring a high level of security plus application availability and performance. Nevis integrates NAC as the first line of LAN security (4) . In addition to NAC, enterprises need to implement role-based network access control as well as critical proactive security measures —real-time, multilevel (5) inspection and microsecond threat containment.
(1)A、automated
B、distinguished
C、authenticated
D、destructed
(2)A、crisis
B、security
C、favorable
D、excellent
(3)A、constructive
B、reductive
C、reactive
D、productive
(4)A、defense
B、intrusion
C、inbreak
D、protection
(5)A、port
B、connection
C、threat
D、insurance
查看答案
試題參考答案:C、B、C、A、C
試題解析與討論:www.ichunya.com/st/86552980.html
試題3
以下關(guān)于RISC(精簡(jiǎn)指令系統(tǒng)計(jì)算機(jī))技術(shù)的敘述中,錯(cuò)誤的是()。查看答案
試題參考答案:B
試題4
EIA/TIA-568標(biāo)準(zhǔn)規(guī)定,在綜合布線時(shí),如果信息插座到網(wǎng)卡之間使用無(wú)屏蔽雙絞線,布線距離最大為 ( ) 米。
A、10
B、30
C、50
D、100
查看答案
試題參考答案:A
試題解析與討論:www.ichunya.com/st/90363111.html
試題5
802.11b 定義了無(wú)線網(wǎng)的安全協(xié)議 WEP (Wired Equivalent Privacy)。以下關(guān)于 WEP 的描述中,不正確的是 ( ) 。
A、WEP使用RC4流加密協(xié)議
B、WEP支持40位密鑰和128位密鑰
C、WEP支持端到端的加密與認(rèn)證
D、WEP是一種對(duì)稱密鑰機(jī)制
查看答案
試題參考答案:C
試題解析與討論:www.ichunya.com/st/85232935.html
試題6
下列路由器協(xié)議中, ( ) 用于 AS 之間的路由選擇。
A、RIP
B、OSPF
C、IS-IS
D、BGP
查看答案
試題參考答案:D
試題解析與討論:www.ichunya.com/st/85242935.html
試題7
Chord是哪種P2P網(wǎng)絡(luò)拓?fù)涞牡湫痛恚?br />A.集中式查看答案
試題參考答案:C
試題8
給定一個(gè)C類網(wǎng)絡(luò)192.168.1.0/24,要在其中劃分出3個(gè)60臺(tái)主機(jī)的網(wǎng)段和2個(gè)30臺(tái)主機(jī)的網(wǎng)段,則采用的子網(wǎng)掩碼應(yīng)該分別為( )。
A、255.255.255.128和255.255.255.224
B、255.255.255.128和255.255.255.240
C、255.255.255.192和255.255.255.224
D、255.255.255.192和255.255.255.240
查看答案
試題參考答案:C
試題解析與討論:www.ichunya.com/st/91463149.html
試題9
某學(xué)校網(wǎng)絡(luò)分為家屬區(qū)和辦公區(qū),網(wǎng)管員將192.168.16.0/24、192.168.18.0/24兩個(gè)IP地址段匯聚為192.168.16.0/22用于家屬區(qū)IP地址段,下面的IP地址中可用作辦公區(qū)IP地址的是( )。查看答案
試題參考答案:D
試題10
設(shè)信道帶寬為3400HZ,采用PCM編碼,采樣周期為125μs,每個(gè)樣本量化為256個(gè)等級(jí),則信道的數(shù)據(jù)速率為( )。
A、10Kb/s
B、16Kb/s
C、56Kb/s
D、64Kb/s
查看答案
試題參考答案:D
試題解析與討論:www.ichunya.com/st/92393181.html
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