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  2. Default gateway - Wikipedia

    https://en.wikipedia.org/wiki/Default_gateway

    If router1 routing table does not have any route to 192.168.1.0/24, and PC3 tries to access a resource outside its own network, then the outgoing routing will work until the reply is fed back to router1. Since the route is unknown to router1, it will go to router1's default gateway, and never reach router3.

  3. Multicast address - Wikipedia

    https://en.wikipedia.org/wiki/Multicast_address

    IP multicast address range Description Routable 224.0.0.0 to 224.0.0.255 Local subnetwork [3]: No 224.0.1.0 to 224.0.1.255 Internetwork control Yes

  4. Network address - Wikipedia

    https://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]

  5. IPv4 - Wikipedia

    https://en.wikipedia.org/wiki/IPv4

    [19]: 31 The addresses 192.168.1.0, 192.168.2.0, etc., may be assigned, despite ending with 0. In the past, conflict between network addresses and broadcast addresses arose because some software used non-standard broadcast addresses with zeros instead of ones.

  6. Classless Inter-Domain Routing - Wikipedia

    https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

    Classless Inter-Domain Routing (CIDR / ˈ s aɪ d ər, ˈ s ɪ-/) is a method for allocating IP addresses for IP routing.The Internet Engineering Task Force introduced CIDR in 1993 to replace the previous classful network addressing architecture on the Internet.

  7. IP address - Wikipedia

    https://en.wikipedia.org/wiki/IP_address

    An Internet Protocol address (IP address) is a numerical label such as 192.0.2.1 that is assigned to a device connected to a computer network that uses the Internet Protocol for communication.

  8. Subnet - Wikipedia

    https://en.wikipedia.org/wiki/Subnet

    Creating a subnet by dividing the host identifier. A subnetwork, or subnet, is a logical subdivision of an IP network. [1]: 1, 16 The practice of dividing a network into two or more networks is called subnetting.

  9. Reserved IP addresses - Wikipedia

    https://en.wikipedia.org/wiki/Reserved_IP_addresses

    Special address blocks Address block Address range Number of addresses Scope Description 0.0.0.0/8 0.0.0.00.255.255.255 16 777 216: Software Current (local, "this") network [1]