试题详情
- 单项选择题You have a single Class C IP address and a point-to-point serial link that you want to implement VLSM on. Which subnet mask is the most efficient?（）
A、255.255.255.0
B、255.255.255.240
C、255.255.255.248
D、255.255.255.252
E、255.255.255.254
- D
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