2. 计算机
  3. Which three statements accurately describe layer 2 Ethernet switches?

Which three statements accurately describe layer 2 Ethernet switches?

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问题 Which three statements accurately describe layer 2 Ethernet switches?
选项 A、        Microsegmentation decreases the number of collisions on the network．
B、        if a switch receives a frame for an unkown destination,it uses ARP to resolve the address．
C、        Spanning Tree Protocol allows switches to automatically share vlan information．
D、        In a properly functioning network with redundant switched paths,each switched aegment will contain one root bridge with all its ports in the forwarding state．All other switches in that broadcast domain will have only one root port．
E、        Establishing vlans increases the number of        broadcast domains．
答案A,D,E
解析 A为分割减少冲突的数量，这里是冲突并不是冲突域，正确；
B收到未知目的帧会产生泛洪；
C这是vtp的特性，不是stp的；
D在一个能够正常运行的网络冗余交换路径，每一个交换网段将包括一个跟桥。所有端口都在转发状态，其他本广播域的交换机有一个根端口。正确；
E．VLAN增加了广播域。正确。
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