A.a class can be identified as a single application， multiple applications with similar service needs，or be based on the source or destination IP address
B.a drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates （BAs）
C.DiffServ uses the DiffServ field in the MAC header to mark frames into behavior
D.the DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS field
E.the first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol （RSVP） value
F.the primary goal of DiffServ is scalability
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A.FECN
B.LLQ
C.WRED
D.LFI
E.CRTP
F.CBWFQ
A.Cisco CallManager
B.Cisco CallManger Express （CME）
C.Cisco CallManager Gateway （CMG）
D.Cisco CallManager Voice Gateway （CMVG）
E.Media Gateway Control Protocol （MGCP）
A.increases link capacity
B.increases buffer space to accommodate bursts of traffic from delay-sensitive applications
C.provides prioritized forwarding for drop-sensitive applications
D.drop lower priority packets before congestion occurs
E.separates traffic into as many as 64 queues that can be uniquely prioritized
A.RTP multiplexing is used to keep multiple phone conversations separate
B.RTP provides end-to-end delivery services for voice traffic
C.UDP is used to ensure a reliable transmission from sender to receiver
D.RTP is used to provide resource reservation for the voice stream
E.UDP provides multiplexing
Refer to the wxhibit . what QOS model should be used to reserve the requested bandwidth and delay needed for each allowed VOIP call regardless of changing networkconditions？（）
A.best-effort delivery
B.ingress committed rate （ICR）
C.shaping and policing
D.egress committed rate （ECR）
E.integrated Services （IntServ）
F.differentiated services （DiffServ）
最新試題
Which three user interfaces exist for the Cisco WLAN Controllers？（）
What is an advantage of the IntServ QoS model？（）
Which statement is true about the Call Admission Control （CAC） feature in VoIP networks？（）
End-to-end QoS is maintained in the Cisco WLAN deployment model by utilizing what parameter in lieu of 802.1p？（）
What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？ （）
Which two characteristics are common between traffic policing and traffic shaping？（）
What can be used to maintain the voice quality on a link by limiting the number of calls that can be active at any given time？（）
Which two functions can be provided by an Integrated Services Router （ISR） in a VoIP network？（）
Which two QoS classification and marking statements are true？ （）
What are two reasons to implement H·323 gatekeepers？（）