07年11月網(wǎng)絡工程師模擬試題（7）上午試卷

(59) A．故障告警
    B．軟件管理
    C．工作負載監(jiān)視
    D．訪問控制
(60) A．MIB-1
    B．MIB-2
    C．MIB-3
    D．MIB-4
(61) A．Information
    B．Exception
    C．Trap
    D．Interrupt
  (62)   A．系統(tǒng)重啟動
    B．鏈路失效
    C．報文認證失敗
    D．檢索的變量不存在
●RPC使用  (63)  模式。
(63) A．客戶機/服務器模式
    B．對等模式
    C．瀏覽器／服務器模式
    D．都不是
●DNS工作于  (64) 
(64) A．網(wǎng)絡層
    B．傳輸層
    C．會話層
    D．應用層
●在以太網(wǎng)卡中，16位網(wǎng)卡的總線類型一般為  (65)  。
(65) A．ISA
    B．EISA
    C．PCI
    D．PCMCIA
●In the following essay，each blank has four choices．Choose the best answer and write down on the answer sheet．
Spread spectrum simply means that data is sent in   (66)   pieces over a number of the discrete frequencies available for use at any time in the specified range．Devices using  (67)  spread spectrum(DSSS)communicate by splitting each    (68)    of data into several parts and sending them concurrently on different  (69)  ,DSSS uses a lot of the available  (70)  ，about 22 megahertz(MHz)．
(66) A．small
    B．high
    C．low
    D．long
(67) A．direct-sequence
    B．discrete-sequence
    C．duplicate-sequence
    D．dedicate-sequence
(68) A．data
    B．byte
    C．packet
    D．bit
(69) A．bits
    B．frequencies
    C．packets
    D．messages
(70) A．rate
    B．velocity
    C．bandwidth
    D．period
●SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment ．A varietion of the  (71)  protocol called NRM is essentially the same as SDLC．SDLC is  (72)  protocol like HDLC , Frame Relay or X．25．An SDLC network is made up of  (73)  that controls all communications , and  (74)  ．It is capable of  (75)  operation, but almost all practical applications are strictly half duplex．

(71) A．HDLC
    B．Frame Relay
    C．X．25
    D．X．21
(72) A．a(chǎn) peer to peer
    B．a(chǎn) point-to-point 
    C．not a peer to peer
    D．a(chǎn) peer to peers
(73) A．a(chǎn) primary station
    B．one or more primary stations  
    C．a(chǎn) secondary station
    D．one or more secondary stations
(74) A．a(chǎn) primary station
    B．one or more primary stations
    C．a(chǎn) secondary station
    D．one or more secondary stations
(75) A．half duplex
    B．full duplex
    C．half or full duplex
    D．half and full duplex

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