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
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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 -
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Which command can be arouter to verify the layer 3 path to a host?（）
A.traceroute address
B.tracert address
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Which of the following is true regarding the use of switches and hubs for network connectivity（）。
A.Switches take less time to process frames than hubs take.
B.Switches do not forward broadcasts.
C.Hubs can filter frames.
D.Using hubs can increase the amount of bandwidth available to hosts.
E.Switches increase the number of collision domains in the network.
