試辯認以下IP地址的網(wǎng)絡(luò)類別: ①01010000,10100000,11,0101 ②10100001,1101,111,10111100 ③11010000,11,101,10000001 ④01110000,00110000,00111110,11011111 ⑤11101111,11111111,11111111,11111111