单选题A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）A255.255.240.0B255.255.248.0C255.255.252.0D255.255.254.0E255.255.255.0F255.255.255.192
单选题
A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）
A
255.255.240.0
B
255.255.248.0
C
255.255.252.0
D
255.255.254.0
E
255.255.255.0
F
255.255.255.192
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