20.某一個電腦的IP位址是123.145.78.65,其子網路遮罩為255.255.255.224,則其子網路的網路位址為何?
(A)123.145.78.8
(B)123.145.78.16
(C)123.145.78.32
(D)123.145.78.64

答案：登入後查看
統計： A(6), B(9), C(33), D(205), E(0) #2404936