IP Classes Chart - Rutgers CCPD The Beacon Institute for...

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Rutgers CCPD / The Beacon Institute for Learning TCP/IP Address Classes Class IP address Network ID Host ID Valid Ranges High-Order Bits A w.x.y.z w. x.y.z 001 – 127 0 B w.x.y.z w.x. y.z 128 – 191 10 C w.x.y.z w.x.y. z 192 – 223 110 Octet High-Order Bit(s) Binary Representation Items in boldface are always the value shown Class Octet 1 Octet 2 Octet 3 Octet 4 wwwwwwww . xxxxxxxx . yyyyyyyy . zzzzzzzz A 0 0000000 . 00000000 . 00000000 . 00000000 B 10 000000 . 00000000 . 00000000 . 00000000 C 110 00000 . 00000000 . 00000000 . 00000000 D 1110 0000 . 00000000 . 00000000 . 00000000 E 1111 0000 . 00000000 . 00000000 . 00000000 Default Subnet Masks Class IP Address Network ID Host ID A w.x.y.z w. x.y.z Default Mask 255.0.0.0 255 . 0 . 0 . 0 B w.x.y.z w.x. y.z. Default Mask 255.255.0.0 255 . 255 . 0 . 0 C w.x.y.z w.x.y. z Default Mask 255.255.255.0 255 . 255 . 255 . 0 1 of 4
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Rutgers CCPD / The Beacon Institute for Learning Address Summary Class Number of Networks Number of Hosts Valid Range Network Ids (First Octet Only) Decimal Binary A 126 16,777,214 001. 00000001. 126. 01111110. B 16,384 65,534 128. 10000000. 191. 10111111. C 2,097,152 254 192. 11000000. 223. 11011111. Calculating Binary / Decimal Conversions The following chart can be applied to any single octet: Bits 8 7 6 5 4 3 2 1 Decimal Value 128 64 32 16 8 4 2 1 2 of 4
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This note was uploaded on 05/15/2010 for the course ACCOUNTING B97702031 taught by Professor Lyz during the Spring '09 term at Punjab Engineering College.

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IP Classes Chart - Rutgers CCPD The Beacon Institute for...

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