Refer to the exhibit. VLAN2， VLAN3， and VLAN10 are conf……

单项选择题Refer to the exhibit. Host A and Host B are connected to the Catalyst 3550 switch and have beenassigned to their respective VLANs. The rest of the 3550 configuration is the default configuration.Host A is able to ping its default gateway， 10.10.10.1， but is unable to ping Host B. Given theoutput displayed in the exhibit， which statement is true？（）

A.HSRP must be configured on SW1
B.A separate router is required to support interVLAN routing
C.Interface VLAN 10 must be configured on the SW1 switch
D.The global config command ip routing must be configured on the SW1 switch
E.VLANs 10 and 15 must be created in the VLAN database mode
F.VTP must be configured to support interVLAN routing

多项选择题Youworkasanetworktechnician.YourbossisinterestedintheQoStechnologyinthecontextofvideotraffic.Whatcanbesaidofapplicationofthistechnologyinthistypeofnetwork？（）

A.The access layer is the initial point at which traffic enters the network. Traffic is marked （orremarked） at Layers 2 and 3 by the access switch as it enters the network， or is "trusted" that it isentering the network with the appropriate tag
B.No traffic marking occurs at the core layer. Layer 2/3 QoS tags are trusted from distributionlayer switches and used to prioritize and queue the traffic as it traverses the core
C.Traffic inbound from the access layer to the distribution layer can be trusted or reset dependingupon the ability of the access layer switches. Priority access into the core is provided based onLayer 3 QoS tags
D.IP precedence， DSCP， QoS group， IP address， and ingress interface are Layer 2 characteristics that are set by the access layer as it passes traffic to the distribution layer. Thedistribution layer， once it has made a switching decision to the core layer， strips these off
E.MAC address， Multiprotocol Label Switching （MPLS）； the ATM cell loss priority （CLP） bit， theFrame Relay discard eligible （DE） bit， and ingress interface are established by the voicesubmodule （distribution layer） as traffic passes to the core layer
F.The distribution layer inspects a frame to see if it has exceeded a predefined rate of trafficwithin a certain time frame， which is typically a fixed number internal to the switch. If a frame isdetermined to be in excess of the predefined rate limit， the CoS value can be marked up in a waythat results in the packet being dropped

单项选择题Whichofthecharacteristicsbelowisassociatedwiththe（QoS）IntegratedServicesModel？（）

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

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