单项选择题
Which of the characteristics below is associated with the （QoS） Integrated Services Model？（）
A.QoS classified at layer 3 using IP precedence or DSCP
B.Guaranteed rate service
C.Implemented using FIFO queues
D.All traffic has an equal chance of being dropped
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多项选择题
TheCompanyisrollingoutCisco’sArchitectureforVoice，VideoandIntegratedData（AVVID）.WhichofthefollowingchoicesrepresentthefundamentalintelligentnetworkservicesinCisco’sAVVID？（）
A.Quality of Service （QoS）
B.Intelligent platforms
C.Mobility and scalability
D.Security
E.High availability -
多项选择题
WhichQoSmechanismscanyouuseonaconvergednetworktoimproveVoIPquality？（）
A.The use of a queuing method that will give VoIP traffic strict priority over other traffic
B.The use of RTP header compression for the VoIP traffic
C.The proper classification and marking of the traffic as close to the source as possible
D.The use of 802.1QinQ trunking for VoIP traffic
E.The use of WRED -
单项选择题
YouareanetworkadministratorofalargeinvestorrelationscompanythatusesaswitchednetworktocarrybothdataandIPtelephonyservices.WhyshouldyoucarryvoicetrafficonaseparateVLAN？（）
A.IP phones require inline power and must be in separate VLAN to receive inline power
B.IP telephony applications require prioritization over other traffic as they are more delaysensitive
C.IP phones can only receive IP addresses through DHCP if they are in separate VLAN
D.The CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vlan
