[单选题]A new Ezonexam switch is installed into an existing LAN and a new VTP trunk is set up with an existing switch. Which VLANs will be allowed on this new trunk?

正确答案 ：A

All defined VLANs are allowed on the trunk by default.

解析：解析：Explanation:

[单选题]关于OSPF中DR的说法不正确的是（）

正确答案 ：B

如果某路由器优先级比DR优先级高，但启动晚，它会抢占原来的DR自己成为DR

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