无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

You have been asked to use a 25 bit subnet mask to segment the following network block:
209.18.12.0.
How many usable will there be per subnet?()

A.2 hosts
B.120 hosts
C.126 hosts
D.255 hosts

微信掃碼免費搜題