IP Classes<\/p>\n
\u2022Default Network
\n\t0.0.0.0<\/p>\n
\u2022Class A
\n\tfirst octet in 1-126. Alone forms net
\n\tfirst octet starts with 0
\n\tother 3 octets for host
\n\thalf of total ips<\/p>\n
\u2022Loopback
\n\t127.0.0.1
\n\u2022Class B
\n\tfirst octet in 128-191. Together
\nwith second octet form net
\n\t1st octet starts with 10
\n\tquarter of total ips
\n\u2022Class C
\n\tfirst octet in 192-223
\n\t1st octet starts with 110
\n\t2^21 Class C networks
\n\teach has 254 (2^8-2) hosts
\n\t1\/8 total ips
\n\u2022Class D
\n\tused for multicast
\n\t1st octet starts with 1110
\n\t1\/16 total ips
\n\u2022Class E
\n\tused for experiments
\n\t1st octet starts with 1111
\n\t1\/16 total ips
\n\u2022Broadcast
\n\t255.255.255.255<\/p>\n
\u2022Subnetting
\nMoving bits to the network portion of the IP address.<\/p>\n
2^x – 2 = Number of addresses
\nx is number of bits in the address<\/p>\n
256 – x = y limit x
\nx: new subnet mask<\/p>\n","protected":false},"excerpt":{"rendered":"
IP Classes \u2022Default Network 0.0.0.0 \u2022Class A first octet in 1-126. Alone forms net first octet starts with 0 other 3 octets for host half of total ips \u2022Loopback 127.0.0.1 \u2022Class B first octet in 128-191. Together with second octet … Continue reading