试题详情
- 单项选择题当一台主机从一个网络移到另一个网络时，以下说法正确的是（）。
A、必须改变它的IP地址和MAC地址
B、必须改变它的IP地址，但不需改动MAC地址
C、必须改变它的MAC地址，但不需改动IP地址
D、MAC地址、IP地址都不需改动
- B
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