A. It supports admission control that allows a network to reject or downgrade new RSVP sessions if one of the interfaces in the path has reached the limit （that is， all reservable bandwidth is booked）.
B. RSVP signals QoS requests per individual flow. In the request the authorized user （authorization object） and needed traffic policy （policy object） are sent. The network can then provide best-effort delivery to these individual flows.
C. RSVP streamlines communication by making it unnecessary to inform network devices of flow parameters （IP addresses and port numbers）.
D. Because of the stateful RSVP architecture， continuous signaling does not have to occur.
E. The flow-based approach is scalable to large implementations， such as the public Internet， because RSVP tracks each individual flow.
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A. 8
B. 5
C. 4
D. 3
A. Resource Reservation Protocol （RSVP）
B. first-in， first-out （FIFO）
C. best-effort
D. CBWFQ
E. IntServ
F. DiffServ
A. Packets can arrive out of order.
B. Packets must take the same path to the destination.
C. Once packets are received at the destination router， the router performs sampling to ensure the quality of the voice traffic.
D. Packets can experience varying delays across the network.
E. Packets containing voice samples are sequentially numbered by default， allowing for reordering upon arrival at the terminal router along the path.
A. Compress payload.
B. Use header compression.
C. Increase link capacity.
D. Use random early detection.
E. Guarantee bandwidth to fragile flows.
F. Implement network-based application recognition.
A. connects traditional telephony devices to voice over IP infrastructure
B. converts analog signals to digital format
C. performs voice compression
D. performs call processing
E. performs dial plan administration
F. performs signaling and device control
最新試題
Which three functions are associated with a Cisco Unified CallManager？ （）
When Cisco SDM is used to generate QoS policy， various QoS classes will be created and assigned a percentage of the interface bandwidth. Which three statements indicate the default bandwidth values that are assigned by SDM for outgoing traffic on a WAN interface？ （）
Which of the items stated is typically the most expensive method of improving QoS across WAN links？（）
Which two statements about the Wi-Fi Multimedia （WMM） standard are true？（）
What are the three models of quality of service （QoS） in a network？（）
SDM creates a low latency queuing （LLQ） service policy with its associated classes. What are the two types of low latency queuing available using the SDM QoS wizard？（）
What are two reasons to implement H·323 gatekeepers？（）
Which two functions can be provided by an Integrated Services Router （ISR） in a VoIP network？（）
Which two commands should be entered on a WLAN controller to remove any residual configuration？（）
When QoS levels in the Cisco Wireless Control System （WCS） are entered， which profile names are used to identify the access categories？（）