单选题You have been asked to use a 23-bit network mask to segment the network block 209.18.12.0, How many usable host address will there e per subnet?（）A 510B 1022C 2046D 8190
题目
单选题
You have been asked to use a 23-bit network mask to segment the network block 209.18.12.0, How many usable host address will there e per subnet?（）
A
510
B
1022
C
2046
D
8190