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  2. Wildcard mask - Wikipedia

    en.wikipedia.org/wiki/Wildcard_mask

    For example, a subnet mask of 255.255.255.0 (11111111.11111111.11111111.00000000 2) inverts to a wildcard mask of 0.0.0.255 (00000000.00000000.00000000.11111111 2). A wild card mask is a matching rule. [2] The rule for a wildcard mask is: 0 means that the equivalent bit must match; 1 means that the equivalent bit does not matter

  3. Subnet - Wikipedia

    en.wikipedia.org/wiki/Subnet

    The result of the bitwise AND operation of IP address and the subnet mask is the network prefix 192.0.2.0. The host part, which is 130, is derived by the bitwise AND operation of the address and the ones' complement of the subnet mask.

  4. Classless Inter-Domain Routing - Wikipedia

    en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

    A subnet mask is a bitmask that encodes the prefix length associated with an IPv4 address or network in quad-dotted notation: 32 bits, starting with a number of 1-bits equal to the prefix length, ending with 0-bits, and encoded in four-part dotted-decimal format: 255.255.255.0. A subnet mask encodes the same information as a prefix length but ...

  5. Broadcast address - Wikipedia

    en.wikipedia.org/wiki/Broadcast_address

    As shown in the example below, in order to calculate the directed broadcast address to transmit a packet to an entire IPv4 subnet using the private IP address space 172.16.0.0 / 12, which has the subnet mask 255.240.0.0, the broadcast address is calculated as 172.16.0.0 bitwise ORed with 0.15.255.255 = 172.31.255.255. Directed broadcasts always ...

  6. Network address - Wikipedia

    en.wikipedia.org/wiki/Network_address

    Network diagram with IP network addresses indicated e.g. 192.168.100.3.. A network address is an identifier for a node or host on a telecommunications network.Network addresses are designed to be unique identifiers across the network, although some networks allow for local, private addresses, or locally administered addresses that may not be unique. [1]

  7. Virtual Router Redundancy Protocol - Wikipedia

    en.wikipedia.org/wiki/Virtual_Router_Redundancy...

    Physical routers within the virtual router must communicate within themselves using packets with multicast IP address 224.0.0.18 and IP protocol number 112 [1] for IPv4, or ff02::12 and IP protocol number 112 for IPv6 [1].

  8. Dot-decimal notation - Wikipedia

    en.wikipedia.org/wiki/Dot-decimal_notation

    A common use of dot-decimal notation is in information technology where it is a method of writing numbers in octet-grouped base-10 numbers. [2] In computer networking, Internet Protocol Version 4 (IPv4) addresses are commonly written using the quad-dotted notation of four decimal integers, ranging from 0 to 255 each. [3]

  9. List of computing and IT abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_computing_and_IT...

    2B1Q—2 Binary 1 Quaternary; 2FA—Two-factor authentication; 2GL—Second-Generation Programming Language; 2NF—Second Normal Form; 3GL—Third-Generation Programming Language; 3GPP—3rd Generation Partnership Project – 3G comms; 3GPP2—3rd Generation Partnership Project 2; 3NF—Third Normal Form; 386—Intel 80386 processor; 486 ...