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 two commands should be entered on a WLAN controller to remove any residual configuration？（）
Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）
In a VoIP network， which type of interface would an analog fax machine connect to？（）
Which three benefits are realized by implementing Wireless LAN Solution Engine （WLSE）？（）
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 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？（）
Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony？（）
Within the WMM policy， how many default QoS radio access categories are there？（）
Which two functions can be provided by an Integrated Services Router （ISR） in a VoIP network？（）