正确答案: B

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题目：在地址转换中，()用来规定哪些数据包需要进行地址转换

解析：B

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举一反三的答案和解析：

[单选题]配置路由器特权用户“加密密码”的命令是：()

enable secret

[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:

[单选题]在OSI七层模型中，介质工作在哪一层()

物理层

[单选题]On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)

The hosts will attempt to resume transmission after a time delay has expired.

解析：C 解析：Explanation:

[单选题]At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?

Data link

解析：解析：Explanation:

[单选题]下列对RIP的配置中，合法的命令是（）

router rip network 10.12.0.0

[多选题]下列哪一设备工作时，要用到OSI的七个层（一层到七层）（）

PC

网管机

WEB服务器

解析：ABC