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  2. Inter-process communication - Wikipedia

    en.wikipedia.org/wiki/Inter-process_communication

    A grid computing system that connects many personal computers over the Internet via inter-process network communication. In computer science, inter-process communication (IPC), also spelled interprocess communication, are the mechanisms provided by an operating system for processes to manage shared data.

  3. Payment system - Wikipedia

    en.wikipedia.org/wiki/Payment_system

    This includes the institutions, payment instruments such as payment cards, people, rules, procedures, standards, and technologies that make its exchange possible. [1] [2] A payment system is an operational network which links bank accounts and provides for monetary exchange using bank deposits. [3]

  4. Preboot Execution Environment - Wikipedia

    en.wikipedia.org/wiki/Preboot_Execution_Environment

    These protocols include the Simple Network Protocol (SNP), the PXE Base Code Protocol (PXE), and the Boot Integrity Services Protocol (BIS). [4] [5] Today in a PXE environment the client architecture detection is rarely based on the identifiers originally included with the PXE v2.1 specification. Instead, each computer that will be booting from ...

  5. SCADA - Wikipedia

    en.wikipedia.org/wiki/SCADA

    Similar to a distributed architecture, any complex SCADA can be reduced to the simplest components and connected through communication protocols. In the case of a networked design, the system may be spread across more than one LAN network called a process control network (PCN) and separated geographically.

  6. Computer security - Wikipedia

    en.wikipedia.org/wiki/Computer_security

    An example of a physical security measure: a metal lock on the back of a personal computer to prevent hardware tampering. Computer security (also cybersecurity, digital security, or information technology (IT) security) is the protection of computer software, systems and networks from threats that may result in unauthorized information disclosure, theft of (or damage to) hardware, software, or ...

  7. Multiplexing - Wikipedia

    en.wikipedia.org/wiki/Multiplexing

    Multiple low data rate signals are multiplexed over a single high-data-rate link, then demultiplexed at the other end.. In telecommunications and computer networking, multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium.

  8. Internet protocol suite - Wikipedia

    en.wikipedia.org/wiki/Internet_protocol_suite

    The transport layer performs host-to-host communications on either the local network or remote networks separated by routers. [46] It provides a channel for the communication needs of applications. UDP is the basic transport layer protocol, providing an unreliable connectionless datagram service. The Transmission Control Protocol provides flow ...

  9. Application layer - Wikipedia

    en.wikipedia.org/wiki/Application_layer

    An application layer is an abstraction layer that specifies the shared communication protocols and interface methods used by hosts in a communications network. [1] An application layer abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model. [2]