2. 计算机
  3. Refer to the exhibit． A problem with network connectivity has been observed． It is suspected that the cable connected to switch

Refer to the exhibit． A problem with network connectivity has been observed． It is suspected that the cable connected to switch

admin2019-04-08  4
问题 Refer to the exhibit． A problem with network connectivity has been observed． It is suspected that the cable  connected to switch port Fa0/9 on Switch1 is disconnected． What would be an effect of this cable being disconnected?
选项 A、Host B would not be able to access the server in VLAN9 until the cable is reconnected．
B、Communication between VLAN3 and the other VLANs would be disabled．
C、The transfer of files from Host B to the server in VLAN9 would be significantly slower．
D、For less than a minute, Host B would not be able to access the server in VLAN9． Then normal network function would resume．
答案D
解析 在交换机间是有一个环路存在的，所以运行的生成树就会block一个端口，从而阻断环路的产生，所以端口f0/9就被block了，所以就没有了连通性。而生成树的选举过程在正常的情况下是需要至少50秒的。所以在生成树选举的过程中HOST B是不能访问到处于VLAN 9中的SERVER的。
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