1. 10.20.30.40 10=8+2=00001010 ;20=16+4=00010100 30=16+8+4+2=00011110; 40=32+8=00100000
二进制:00001010.00010100.00011110 .00100000
2. 172.16.100.50 172=128+32+8+4=10101100; 16=0001000 ;100=64+32+4=01100100 ;50=32+16+2=00110010
二进制:10101100..0001000.01100100.00110010
3. 192.168.255.255 192=128+64=11000000; 168=128+32+8=10101000 ;255=11111111 ;255=11111111
二进制:11000000.10101000.11111111.11111111
4. 127.0.0.0
127=64+32+16+8+4+2+1=01111111
二进制:01111111.00000000.00000000.00000000.00000000
5. 202.103.24.68 202=128+64+8+2=11001010 ;103=64+32+4+2+1=01100111; 24=16+8=00011000; 68=64+4=01000100
二进制:11001010.01100111.00011000.01000100