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.
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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
A. nGenius Real-Time Monitor
B. CiscoView
C. Device Fault Manager
D. Internetwork Performance Monitor
最新試題
Which three mechanisms are used to secure management traffic from outside IPS sensors？（）
The Cisco NAC Appliance is able to check which three items before allowing network access？（）
What amount of cell overlap ensures smooth roaming for wireless endpoints？（）
Which two statements about Network Attached Storage are correct？（）
What is the traditional mode for a firewall？（）
Which three of the following descriptions are true about the firewall modes？ （）
To ensure quality， what is the maximum end-to-end transit time in milliseconds on a voice network？（）
Which signal and noise values will result in the best phone communication with an access point？（）
In a VoWLAN deployment， what is the recommended separation between cells with the same channel？（）
Which two statements correctly describe a situation in which an Active/Standby Service Module design is being used？ （）