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(jì)劃購(gòu)置容量需求為60TB的存儲(chǔ)設(shè)備，配置一個(gè)RAID組，采用RAID5冗余，并配置一塊全局熱備盤(pán)，至少需要（  ）塊單塊容量為4TB的磁盤(pán)。
A.15
B.16
C.17
D.18
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第62題： 對(duì)某銀行業(yè)務(wù)系統(tǒng)的網(wǎng)絡(luò)方案設(shè)計(jì)時(shí)，應(yīng)該優(yōu)先考慮（  ） 原則。
A.開(kāi)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(xiàng)目風(fēng)險(xiǎn)評(píng)估最關(guān)鍵的時(shí)間點(diǎn)是（  ）。
A.計(jì)劃階段
B.計(jì)劃發(fā)布后
C.設(shè)計(jì)階段
D.項(xiàng)目出現(xiàn)問(wèn)題時(shí)
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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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