多項(xiàng)選擇題Which of the following statements is true about the 80/20 rule （Select all that apply）？（）

A.20 percent of the traffic on a network segment should be local.
B.no more than 20 percent of the network traffic should be able to move across a backbone.
C.no more than 80 percent of the network traffic should be able to move across a backbone.
D.80 percent of the traffic on a network segment should be local.


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1.多項(xiàng)選擇題What are some virtues of implementing end-to-end VLANs？（）

A.End-to-end VLANs are easy to manage.
B.Users are grouped into VLANs independent of a physical location.
C.Each VLAN has a common set of security and resource requirements for all members.
D.Resources are restricted to a single location.

2.單項(xiàng)選擇題Under what circumstances should an administrator prefer local VLANs over end-to-end VLANs？（）

A.Eighty percent of traffic on the network is destined for Internet sites.
B.There are common sets of traffic filtering requirements for workgroups located in multiple  buildings.
C.Eighty percent of a workgroup’s traffic is to the workgroup’s own local server.
D.Users are grouped into VLANs independent of physical location.
E.None of the other alternatives apply