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  2. Direct memory access - Wikipedia

    en.wikipedia.org/wiki/Direct_memory_access

    Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU). [ 1 ] Without DMA, when the CPU is using programmed input/output , it is typically fully occupied for the entire duration of the read or write operation, and is thus ...

  3. Remote direct memory access - Wikipedia

    en.wikipedia.org/wiki/Remote_direct_memory_access

    In computing, remote direct memory access (RDMA) is a direct memory access from the memory of one computer into that of another without involving either one's operating system. This permits high-throughput, low- latency networking, which is especially useful in massively parallel computer clusters .

  4. Insecure direct object reference - Wikipedia

    en.wikipedia.org/wiki/Insecure_direct_object...

    Insecure direct object reference (IDOR) is a type of access control vulnerability in digital security. [ 1 ] This can occur when a web application or application programming interface uses an identifier for direct access to an object in an internal database but does not check for access control or authentication .

  5. Request for proposal - Wikipedia

    en.wikipedia.org/wiki/Request_for_proposal

    A request for proposal (RFP) is a form of reverse auction that solicits a business proposal by an organisation interested in the procurement of a service or product from potential suppliers. [1] It is usually part of a complex sales process, and made through a bidding process.

  6. Remote procedure call - Wikipedia

    en.wikipedia.org/wiki/Remote_procedure_call

    In distributed computing, a remote procedure call (RPC) is when a computer program causes a procedure (subroutine) to execute in a different address space (commonly on another computer on a shared computer network), which is written as if it were a normal (local) procedure call, without the programmer explicitly writing the details for the remote interaction.

  7. OPC Data Access - Wikipedia

    en.wikipedia.org/wiki/OPC_Data_Access

    The OPC Data Access Specification is the first of a group of specifications known as the OPC Classic Specifications. [1]OPC Data Access is a group of client–server standards that provides specifications for communicating real-time data from data acquisition devices such as PLCs to display and interface devices like Human–Machine Interfaces (HMI), SCADA systems [2] and also ERP/MES systems. [3]

  8. Direct inward dial - Wikipedia

    en.wikipedia.org/wiki/Direct_inward_dial

    The outgoing service from a PBX to a central office exchange, corresponding to DID, is direct outward dialing (DOD) or direct dial central office (DDCO). This service is often combined with DID service and allows direct dialing of global telephone numbers by every extension covered by the service without the assistance of an operator.

  9. Virtual Router Redundancy Protocol - Wikipedia

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

    This address is used by only one physical router at a time, and it will reply with this MAC address when an ARP request is sent for the virtual router's IP address. 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 ...