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  3. You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providin

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providin

admin2019-04-08  28
问题 You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the max number of subnets．Which network address and subnet mask meet this requirement?
选项 A、        192．168．252．8 255．255．255．248
B、        192．168．252．8 255．255．255．252
C、        192．168．252．16 255．255．255．240
D、        192．168．252．0 255．255．255．252
E、        192．168．252．16 255．255．255．252
答案A
解析 需要3个有效地址，块大小最小为8，还要提供最大数量的子网，所以用最块大小8，掩码255．255．255．248
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