单项选择题

Which port state is introduced by Rapid-PVST?（）

A.learning
B.listening
C.discarding
D.forwarding

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单项选择题

The following configuration line was added to router R1
Access-list 101 permit ip 10.25.30.00.0.0.255 any
What is the effect of this access list configuration？（）

A.ermit all packets matching the first three octets of the source address to all destinations
B.permit all packet matching the last octet of the destination address and accept all source addresses
C.permit all packet matching the host bits in the source address to all destinations
D.permit all packet from the third subnet of the network address to all destinations

单项选择题

Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0， what is the correct networkaddres？（）

A.172.16.16.0
B.176.24.0.0
C.172.16.0.0
D.172.16.28.0

单项选择题

What is the name of the VTP mode of operation that enables a switch to forward only VTPadvertisements while still permitting the editing of local VLAN information?（）

A.server
B.client
C.tunnel
D.transparent