Whichtwocommandsarerequiredtoenablemulticastonarouter,knowingthatthereceiversonlysupportsIGMPv2?()
A. IPPIMRP-address
B. IPPIMssm
C. IPPIMSparse-mode
D. IPPIMPassive
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SelectthethreebestanswerswhichbestdescribePrivateNetwork-toNetworkInterface(PNNI)inanATM network.()
A. ItistheRoutingprotocolusedbetweenATMswitches
B. PNNIusesthesameDijsktraalgorithmforSPFcalculation
C. PNNIandOSPFusethesameDatabasetomakecohesivedecisionforpacketforwarding
D. PNNImeasureslinecapacitiesanddelaysinadditiontosimplecostmetrics
2,3二氨基萘荧光法测定水中硒时,荧光物质的形成操作为:向消解的溶液中加入10mlNa.2EDTA,盐酸羟胺和甲酚红混合试剂,溶液呈桃红色,用()调节至淡橙色。
A. 氨水
B. 氢氧化钠
C. 盐酸
D. 硝酸
2,3二氨基萘荧光法测定水硒,取20ml水样测定时的最低检测浓度为()ug/L.
A. 0.005
B. 0.025
C. 0.05
D. 0.25
WhatOSPFLSAisusedtosupportMPLS-trafficEngineering?()
A. ExternalLSA(Type5)
B. OpaqueLSA(Type9)
C. OpaqueLSA(Type10)
D. OpaqueLSA(Type11)
E. NSSALSA(Type7)