Whenanewtrunkisconfiguredona2950switch,whichVLANsbydefaultareallowedoverthetrunklink？（）
A. noVLANs
B. allVLANs
C. onlyVLANs1-64
D. onlytheVLANsthatarespecifiedwhencreatingthetrunk
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Forthefollowingitems，whichmanagementtopologykeepsmanagementtrafficisolatedfromActualTests.comproductiontraffic？（）
A. OTP
B. OOB
C. SAFE
D. MARS
WhichthreestatementsdescribethedifferencesbetweenRIPversion1andRIPversion2？（Choosethree.)（）
A. RIPversion1broadcastsupdateswhereasRIPversion2usesmulticasts.
B. RIPversion1multicastsupdateswhileRIPversion2usesbroadcasts.
C. BothRIPversion1andRIPversion2areclasslessroutingprotocols.
D. RIPVersion2isaclasslessroutingprotocolwhereasRIPversion1isaclassfulroutingprotocol.
E. BothRIPversion1andversion2supportauthentication.
F. RIPversion2sendsthesubnetmaskinupdatesandRIPversion1doesnot.
Whatisthepurposeofthecommandshownbelow？vtppasswordFl0r1da（）。
A. ItisusedtovalidatethesourcesofVTPadvertisementssentbetweenswitches.
B. ItisusedtoaccesstheVTPservertomakechangestotheVTPconfiguration.
C. ItallowstwoVTPserverstoexistinthesamedomain，eachconfiguredwithdifferentpasswords.
D. ItisthepasswordrequiredwhenpromotingaswitchfromVTPclientmodetoVTPservermode.
E. ItisusedtopreventaswitchnewlyaddedtothenetworkfromsendingincorrectVLANinformationtotheotherswitchesinthedomain.
稀释与接种法测定水中BOD5时，下列废水中应进行接种的是：（）
A. 有机物含量较多的废水
B. 较清洁的河水
C. 不含或含少量微生物的工业废水
D. 生活污水
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