单项选择题
As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）
A. using DHCP snooping
B. snooping the incoming 802.1Q VLAN tag
C. using CDP
D. snooping the CoS marking on the incoming frames
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相关考题
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单项选择题
What is the most likely reason that an IBGP route that has been selected as a best route is not entered into the IP routing table?（）
A. Route reflectors are not passing updates properly.
B. BGP synchronization has been enabled.
C. The next-hop address is unreachable.
D. No loopback interface has been configured on a router. -
单项选择题
Which Cisco IOS command is used to troubleshoot a problem in which a BGP session stays in the active state?（）
A. debug ip bgp updates
B. debug ip tcp events
C. debug ip bgp transactions
D. debug ip tcp transactions -
单项选择题
Which command is used to view IPv6 parameters related to the BGP process?（）
A. show ip bgp ipv6
B. show protocols ipv6
C. show ipv6 bgp
D. show bgp ipv6
