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  2. Layer 8 - Wikipedia

    en.wikipedia.org/wiki/Layer_8

    Linux Gazette carries a regular column called Layer 8 Linux Security. [9] Layers 8, 9, and 10 are sometimes used to represent individuals, organizations, and governments for the user layer of service-oriented architectures. See OSI User Layers figure for details. User-in-the-loop is a serious concept including Layer 8 as a system-level model.

  3. Internet layer - Wikipedia

    en.wikipedia.org/wiki/Internet_layer

    The internet layer is a group of internetworking methods, protocols, and specifications in the Internet protocol suite that are used to transport network packets from the originating host across network boundaries; if necessary, to the destination host specified by an IP address.

  4. Internet protocol suite - Wikipedia

    en.wikipedia.org/wiki/Internet_protocol_suite

    The internet layer does not distinguish between the various transport layer protocols. IP carries data for a variety of different upper layer protocols. These protocols are each identified by a unique protocol number: for example, Internet Control Message Protocol (ICMP) and Internet Group Management Protocol (IGMP) are protocols 1 and 2 ...

  5. Internet Protocol - Wikipedia

    en.wikipedia.org/wiki/Internet_Protocol

    The following Internet Experiment Note (IEN) documents describe the evolution of the Internet Protocol into the modern version of IPv4: [6] IEN 2 Comments on Internet Protocol and TCP (August 1977) describes the need to separate the TCP and Internet Protocol functionalities (which were previously combined). It proposes the first version of the ...

  6. OSI model - Wikipedia

    en.wikipedia.org/wiki/OSI_model

    At each level N, two entities at the communicating devices (layer N peers) exchange protocol data units (PDUs) by means of a layer N protocol. Each PDU contains a payload, called the service data unit (SDU), along with protocol-related headers or footers. Data processing by two communicating OSI-compatible devices proceeds as follows:

  7. Computer network - Wikipedia

    en.wikipedia.org/wiki/Computer_network

    Unofficially, the Internet is the set of users, enterprises, and content providers that are interconnected by Internet Service Providers (ISP). From an engineering viewpoint, the Internet is the set of subnets, and aggregates of subnets, that share the registered IP address space and exchange information about the reachability of those IP ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Application layer - Wikipedia

    en.wikipedia.org/wiki/Application_layer

    An application layer abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model. [2] Although both models use the same term for their respective highest-level layer, the detailed definitions and purposes are different.