在网络运行中，发现设备CPU长时间占用过高，经检查发现下图中的"Number of topology changes"值频繁变化，可初步判断该故障由（ ）导致，可能的原因是（ ）。
＜Switch>display stp topology-change
CIST topology change information
Number of topology changes:35
Time since last topology change:0 days 1h:7m:30s
Topology change initiator(notified):GigabitEthernet2/0/6
Topology change last received from:101b-5498-d3e0
Number of generated topologychange traps:38
Number of suppressed topologychange traps:8
问题1选项
A.硬件故障
B.网络攻击
C.网络震荡
D.网络环路
问题2选项
A.网络上某个端口链路属性频繁变化
B.广播风暴造成大量协议报文
C.设备受到DHCP协议报文攻击
D.在部分硬件故障时会上报大量中断
正确答案及解析
正确答案
解析
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