单项选择题

Phase I and Phase II DMVPN differ in terms of which of these characteristics？（）

A.Utilization of spoke-to-spoke dynamic tunnels
B.Utilization of multipoint GRE tunnels at the hub site
C.Utilization of hub-to-spoke dynamic tunnels
D.Support for multicast

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单项选择题

Which one of the following potential issues is eliminated by using split horizon？（）

A.Joined horizons
B.Packet forwarding loops
C.cisco Express Forwarding load-balancing inconsistency
D.Asymmetric routing throughout the network

单项选择题

Which switch port error is an indication of duplex mismatches on 10/100/1000 IEEE 802.3u Gigabit Ethernet ports？（）

A.FCS errors
B.Runts
C.Multiple collisions
D.Alignment errors

单项选择题

f a Cisco switch is configured with VTPv1 in transparent mode， what is done with received VTP advertisements？（）

A.They are discarded
B.The contents are altered to reflect the switch’s own VTP database and then they are forward out all trunking ports
C.The changes within the advertisements are made to the switch’s VTP database.
D.The contents are ignored and they are forwarded out all trunking ports.