第60題： 下列IEEE 802.11系列標(biāo)準(zhǔn)中，WLAN的傳輸速率達(dá)到300Mb/s的是（  ）。
A.802.11a
B.802.11b
C.802.11g
D.802.11n
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第61題： 某單位計劃購置容量需求為60TB的存儲設(shè)備，配置一個RAID組，采用RAID5冗余，并配置一塊全局熱備盤，至少需要（  ）塊單塊容量為4TB的磁盤。
A.15
B.16
C.17
D.18
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第62題： 對某銀行業(yè)務(wù)系統(tǒng)的網(wǎng)絡(luò)方案設(shè)計時，應(yīng)該優(yōu)先考慮（  ） 原則。
A.開放性
B.先進(jìn)性
C.經(jīng)濟(jì)性
D.高可用性
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第64題： 進(jìn)行項目風(fēng)險評估最關(guān)鍵的時間點是（  ）。
A.計劃階段
B.計劃發(fā)布后
C.設(shè)計階段
D.項目出現(xiàn)問題時
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第65題： TheAddress Resolution Protocol(ARP)wasDeveloped to enableCommunication onAn InternetworkAnd performA required function in IP routing.ARP liesBetween layers（  ）of the OSI model,andAllowsComputers to introduce each otherAcrossA network prior toCommunication.APR finds the（  ）address ofA host from its known（  ）address.BeforeADevice sendsADatagram toAnotherDevice,it looks in itsARPCache to see if there isA MACAddressAndCorresponding IPAddress for theDestinationDevice.If there is no entry,the soureeDevice sendsA（  ）message to everyDevice on the network.EachDeviceCompares the IPAddress to its own.Only theDevice with the matching IPAddress replies withA packetContaining the MACAddress for theDevice（except in theCase of “proxyARP”）.The sourceDeviceAdds the（  ）device MACAddress to itsARP table for future reference.
1）A.1And 2
B.2And 3
C.3And 4
D.4And 5
2）A.IP
B.logical
C.hardware
D.network
3）A.IP
B.physical
C.MAC
D.virtual
4）A.unicast
B.multicast
C.broadcast
D.point-to-point
5）A.source
B.destination
C.gateway
D.proxy
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