WhichofthefollowingisunsafeforatechniciantousewhentroubleshootingorrepairingaCRTmonitor?（）
Anti-staticpad
B. Anti-staticwriststrap
C. Rubbergloves
D. Multimeter
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Whichtwostatementsaboutsubnetmasksaretrue?（）
A. Ifabitisturnedon(1),thecorrespondingbitintheIPaddressisusedforthehostportion.
B. Ifabitisturnedoff(0),thecorrespondingbitintheIPaddressisusedforthehostportion.
C. Ifabitisturnedon(1),thecorrespondingbitintheIPaddressisusedforthenetworkprefix.
D. Ifabitisturnedoff(0),thecorrespondingbitintheIPaddressisusedforthenetworkprefix.
YouwouldliketoconfigureanEthernetinterfacewiththefollowingcharacteristics:Fast Whichsetofconfigurationcommandsaccuratelycompletesthistask?（）
A
B
C
D
Whichstatementdescribestransittraffic?（）
A. TrafficaddressedtothechassisthatrequiressomeformofspecialhandlingbytheREbeforeitcanbeforwardedoutanegressport.
B. Trafficthatentersaningressport,iscomparedagainsttheforwardingtable,andisforwardedoutanegressport.
C. AnytrafficthatrequiresthegenerationofanICMPmessage.
D. Trafficthatrequiressomeformofspecialattentionanddoesnotpassthroughthedevice.
方差分析中，组间方差包括（）。
A. 随机误差
B. 系统误差
C. 总体标准差
D. 样本标准差
E. 估计标准误差
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