<p>帮忙分析一下这道题.先谢谢了.!</p><p>Why would an daministrator change the value of the spanning-tree priority of a switch?</p><p>管理员为何要修改交换机的生成树优先级.----我也知道是为了选举根桥可是...</p><p>A . in order to optimize the path that frames take from source to destination</p><p>B . to increase the priority so a designated port will become a root port </p><p>C . to increase the BID.so the switch is more likely to become root bridge .</p><p>D . in order to allow VLANs to be sent from one switch to another across a single link </p><p>E . to force a given switch to become an STP server.</p><p>答案是A.</p>
<p>1.which of the following is true concerning Frame Relay multipoint subinterfaces?</p><p>A . An ip address is required on the physical interface of the central router.</p><p>B . All routers are required to be fully meshed.</p><p>C . All routers must be in the same subnet to forward routing updates and broadcasts.</p><p>D . Multipoint is the default configuration for Frame Relay subinterfaces.</p><p>答案是:C</p><p>2 .Which statements describe the routing protocol OSPF ?(Choose three.)</p><p>A . It supports VLSM.</p><p>B . It is used to route between autonomous systems.</p><p>C . It confines network instability to one area of the network.</p><p>D . It increases routing ouerhead on the network.</p><p>E . It allows extensive control of routing updates.</p><p>答案是:ACE</p><p>谁能帮我解释一下这道题的意思.最好多分析一些内容.谢谢先!</p>
<p><font color="#2222dd">C . All routers must be in the same subnet to forward routing updates and broadcasts.</font></p><p><font color="#2222dd">所有路由器只能通过相同子网转发广播包和路由更新包，避免了水平分割的问题```</font></p><p></p><p><font color="#2222dd">第二题A、C没有悬念，书上的原话.</font></p><p><font color="#2222dd">E的意思是：允许对路由更新进行广泛的控制，比如OSPF区域汇总```</font></p>
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发表于 2006-10-22 22:05:42
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