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單項選擇題
Refer to the exhibit. Look at the command output. What can you use to prevent this behavior？（）
A.UDLD
B.spanning-tree loopguard
C.VTP mode transparent
D.switchport mode desirable
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問答題
【簡答題】In broadcast network the first adj of ospf is 2-way？why？this question will give you a picture.
答案：
yes，in broadcast network DRothers on...
