单选题An administrator needs a network that can support up to 800 hosts on the same subnet. Which of the following is the MINIMUM subnet mask that should be used？（）A255.0.0.0B255.255.0.0C255.255.252.0D255.255.255.0
单选题
An administrator needs a network that can support up to 800 hosts on the same subnet. Which of the following is the MINIMUM subnet mask that should be used？（）
A
255.0.0.0
B
255.255.0.0
C
255.255.252.0
D
255.255.255.0
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