A. RSVP itself provides bandwidth and delay guarantees.
B. For RSVP to be end-to-end， all devices must support RSVP.
C. RSVP reservations are maintained by a centralized reservations server.
D. An RSVP compatible QoS mechanism must be used to implement guarantees according to RSVP reservations.
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A. supports multiple protocols
B. works only in a shared or loop environment
C. allows addressing for up to 4 million nodes
D. provides a high speed transport for SCSI payloads
A. 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.
B. 79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.
C. 79xx IP phones do not mark voice packets with optimal DSCP values.
D. 79xx IP phones use a custom protocol to communicate CDP information to the switch.
A. provide service internetworking
B. support transparency for Layer 2 frames
C. indicate destination as a connection identifier
D. map to the DLCI in service internetworking
A. Neither broadcast nor multicast traffic is ever flooded in VPLS.
B. Multicast traffic is flooded but broadcast traffic is not flooded in VPLS.
C. VPLS emulates an Ethernet switch， with each EMS being analogous to a VLAN.
D. Because U-PE devices act as IEEE 802.1 devices， the VPLS core must use STP.
E. When the provider experiences an outage， IP re-routing restores PW connectivity and MAC re-learning is needed.
A. bandwidth efficiency
B. cell-switching
C. congestion notification
D. heterogeneous network
最新試題
Which two statements about an interface configured with the asr-group command are correct？ （）
Which three of the following descriptions are true about the firewall modes？ （）
During consultation， you find that a customer has only a single asset closet and is looking for asolution that is easy to deploy. Which NAS physical deployment model would you suggest to this customer？（）
What is the traditional mode for a firewall？（）
Which three mechanisms are used to secure management traffic from outside IPS sensors？（）
In which two locations in an enterprise network can an IPS sensor be placed？ （）
Which signal and noise values will result in the best phone communication with an access point？（）
Which two of these correctly describe asymmetric routing and firewalls？ （）
Which two design recommendations are most appropriate when OSPF is the data center core routing protocol？ （）
At a certain customer’s site， a NAS is logically in the traffic path but not physically in the trafficpath. The NAS identifies clients by their IP addresses. In which access mode has this NAS beenconfigured to operate？（）