正确答案: B

To reset the console password

题目：Why might the Ezonexam network administrator set the configuration register to 0x2142 on a 2600 series Cisco router?

解析：解析：Explanation:

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举一反三的答案和解析：

[单选题]On the topic of VLSM, which one of the following statements best describes the concept of the route aggregation?

Combining routes to multiple networks into one supernet.

解析：解析：Explanation:

[多选题]Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true? (Select two answer choices)

The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.

The DHCP Discover message uses UDP as the transport layer protocol.

解析：A,B 解析：Explanation:

[单选题]工作在OSI第三层的设备是：()

路由器

[单选题]当拓扑信息完成交换，相邻路由器具有相同的LSDB时，下列哪项OSPF邻居状态是希望得到的()

FULL

[单选题]OSI七层模型中，传输层的数据封装名称为（）

段