A.192.168.1.5/28(32位中前28位是網(wǎng)絡號);255.255.255.240 B.192.168.1.10/28;255.255.255.240 C.192.168.1.31/28;255.255.255.240 D.192.168.1.40/28;255.255.255.240
A.應用層 B.網(wǎng)絡層 C.表示層 D.物理層
A.12345678 B.password C.19820102 D.cqLZZ&2016