A. ISL
B. VLAN Trunk
C. VoQ
D. Enhanced ISL
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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.
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.
最新試題
Client traffic is being bridged through LAN interfaces on two WLCs. Which roaming option will keep them on the same IP subnet？（）
Which two design recommendations are most appropriate when EIGRP is the data center corerouting protocol？ （）
Which statement about Fibre Channel communications is correct？（）
Which three mechanisms are used to secure management traffic from outside IPS sensors？（）
How many channels are defined in the IEEE 802.11b DSSS channel set？（）
Which two statements correctly describe a situation in which an Active/Standby Service Module design is being used？ （）
At a certain customer’s site， a NAS is both physically and logically in the traffic path. The NAS identifies clients solely based on their MAC addresses. In which access mode has this NAS been configured to operate？（）
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？（）
In a VoWLAN deployment， what is the recommended separation between cells with the same channel？（）
One of your customers has deployed a Layer 3 gateway in the untrusted network. Which gateway mode is appropriate for this customer？（）