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網(wǎng)絡(luò)工程師每日一練試題內(nèi)容(2024/3/23)
試題1
Although a given waveform may contain frequencies over a very broad range, as a practical matter any transmission system will be able to accommodate only a limited band of (1) . This, in turn, limits the data rate that can be carried on the transmission (2) . A square wave has an infinite number of frequency components and hence an infinite (3) .However, the peak amplitude of the kth frequency component, kf, is only 1/k, so most of the (4) in this waveform is in the first few frequency components. In general, any digital waveform will have (5) bandwidth. If we attempt to transmit this waveform as a signal over any medium, the transmission system will limit the bandwidth that can be transmitted.
(1)A、frequencies
B、connections
C、diagrams
D、resources
(2)A、procedures
B、function
C、route
D、medium
(3)A、source
B、bandwidth
C、energy
D、cost
(4)A、frequency
B、energy
C、amplitude
D、phase
(5)A、small
B、limited
C、infinite
D、finite
查看答案
試題參考答案:A、D、B、B、C
試題解析與討論:www.shc2b.com/st/90973132.html
試題2
IPv6地址的長度為:查看答案
試題參考答案:D
試題解析與討論:www.shc2b.com/st/3137711625.html
試題3
在單指令流多數(shù)據(jù)流計(jì)算機(jī)(SIMD)中,各處理單元必須( )
A、以同步方式,在同一時(shí)間內(nèi)執(zhí)行不同的指令
B、以同步方式,在同一時(shí)間內(nèi)執(zhí)行同一條指令
C、以異步方式,在同一時(shí)間內(nèi)執(zhí)行不同的指令
D、以異步方式,在同一時(shí)間內(nèi)執(zhí)行同一條指令
查看答案
試題參考答案:B
試題解析與討論:www.shc2b.com/st/83802885.html
試題4
在SNMPv2中,一個(gè)實(shí)體發(fā)送一個(gè)報(bào)文,一般經(jīng)過四個(gè)步驟:
加入版本號(hào)和團(tuán)體名,構(gòu)造報(bào)文;
把PDU、源和目標(biāo)端口地址以及團(tuán)體名傳送給認(rèn)證服務(wù),認(rèn)證服務(wù)產(chǎn)生認(rèn)證碼或?qū)?shù)據(jù)進(jìn)行加密,返回結(jié)果;
根據(jù)要實(shí)現(xiàn)的協(xié)議操作構(gòu)造PDU;
進(jìn)行BER編碼,產(chǎn)生0/1比特串。
這四個(gè)步驟的正確次序是 ( ) 。
A、①③②④
B、③②①④
C、④①③②
D、②①③④
查看答案
試題參考答案:B
試題解析與討論:www.shc2b.com/st/87022996.html
試題5
Certificates are (1) documents attesting to the (2) of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to (3) someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a certificate also contains an (4) date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital (5) of the certificate issuer. The most widely accepted format for certificates is X.509 , thus, Certificates can be read or written by any application complying with X.509.
(1)A、text
B、data
C、digital
D、structured
(2)A、connecting
B、binding
C、composing
D、conducting
(3)A、impersonate
B、personate
C、damage
D、control
(4)A、communication
B、computation
C、expectation
D、expiration
(5)A、signature
B、mark
C、stamp
D、hypertext
查看答案
試題參考答案:C、B、A、D、A
試題解析與討論:www.shc2b.com/st/85322938.html
試題6
在SNMP中,管理進(jìn)程查詢代理中一個(gè)或多個(gè)變量的值所用報(bào)文名稱為?。?) ,該報(bào)文的缺省目標(biāo)端口是?。?) 。
(1)A、get-request
B、set-request
C、get-response
D、trap
(2)A、160
B、161
C、162
D、163
查看答案
試題參考答案:A、B
試題解析與討論:www.shc2b.com/st/91363146.html
試題7
光纖布線系統(tǒng)的測試指標(biāo)不包括 ( ) 。
A、最大衰減限值
B、波長窗口參數(shù)
C、回波損耗限值
D、近端串?dāng)_
查看答案
試題參考答案:D
試題解析與討論:www.shc2b.com/st/85602947.html
試題8
某公司中,最大的局域網(wǎng)可容納200個(gè)主機(jī),最小的局域網(wǎng)可容納20個(gè)主機(jī),若使用可變長子網(wǎng)掩碼劃分子網(wǎng),其最長的掩碼(1)位,最短的掩碼(2)位。查看答案
試題參考答案:D、A
試題解析與討論:www.shc2b.com/st/458058609.html
試題9
在交換機(jī)上執(zhí)行display stp topology-change命令,其作用是()。查看答案
試題參考答案:D
試題解析與討論:www.shc2b.com/st/576901489.html
試題10
下面D類地址中,可用于本地子網(wǎng)作為組播地址分配的是(1),一個(gè)組播組包含4個(gè)成員,當(dāng)組播服務(wù)發(fā)送信息時(shí)需要發(fā)出(2)個(gè)分組。
(1)A.224.0.0.1
B.224.0.1.1
C.234.0.0.1
D.239.0.1.1
(2)A.1
B.2
C.3
D.4
查看答案
試題參考答案:D、A
試題解析與討論:www.shc2b.com/st/2341315004.html
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