多项选择题

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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多项选择题

Whataresomevirtuesofimplementingend-to-endVLANs？（）

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.

单项选择题

UnderwhatcircumstancesshouldanadministratorpreferlocalVLANsoverend-to-endVLANs？（）

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