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  2. Watchdog timer - Wikipedia

    en.wikipedia.org/wiki/Watchdog_timer

    For example, a watchdog timer may be used when running untrusted code in a sandbox, to limit the CPU time available to the code and thus prevent some types of denial-of-service attacks. [2] In real-time operating systems , a watchdog timer may be used to monitor a time-critical task to ensure it completes within its maximum allotted time and ...

  3. Timeout Detection and Recovery - Wikipedia

    en.wikipedia.org/wiki/Timeout_Detection_and_Recovery

    Timeout Detection and Recovery or TDR is a feature of the Windows operating system (OS) introduced in Windows Vista. It detects response problems from a graphics card (GPU), and if a timeout occurs, the OS will attempt a card reset to recover a functional and responsive desktop environment .

  4. Machine-check exception - Wikipedia

    en.wikipedia.org/wiki/Machine-check_exception

    STOP: 0x00000124 (0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000) Older versions of Windows use the Machine Check Architecture, with STOP code 0x9C, MACHINE_CHECK_EXCEPTION. [4] Example: STOP: 0x0000009C (0x00000030, 0x00000002, 0x00000001, 0x80003CBA)

  5. Polling (computer science) - Wikipedia

    en.wikipedia.org/wiki/Polling_(computer_science)

    A poll message is a control-acknowledgment message.. In a multidrop line arrangement (a central computer and different terminals in which the terminals share a single communication line to and from the computer), the system uses a master/slave polling arrangement whereby the central computer sends message (called polling message) to a specific terminal on the outgoing line.

  6. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    Code Meaning 100–199: System boards 200–299: Memory 300–399: Keyboard 400–499: Monochrome display 500–599: Color/graphics display ... Watchdog timer failed 4:

  7. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    450 Blocked by Windows Parental Controls (Microsoft) The Microsoft extension code indicated when Windows Parental Controls are turned on and are blocking access to the requested webpage. [36] 498 Invalid Token (Esri) Returned by ArcGIS for Server. Code 498 indicates an expired or otherwise invalid token. [37] 499 Token Required (Esri)

  8. Heartbeat (computing) - Wikipedia

    en.wikipedia.org/wiki/Heartbeat_(computing)

    In computer science, a heartbeat is a periodic signal generated by hardware or software to indicate normal operation or to synchronize other parts of a computer system. [1] [2] Heartbeat mechanism is one of the common techniques in mission critical systems for providing high availability and fault tolerance of network services by detecting the network or systems failures of nodes or daemons ...

  9. Blue screen of death - Wikipedia

    en.wikipedia.org/wiki/Blue_screen_of_death

    BSoDs in the Windows NT family initially used the 80×50 text mode with a 720×400 screen resolution, but changed to use the 640×480 screen resolution starting with Windows 2000 up to 7. Windows 2000 used its built-in kernel mode font, Windows XP, Vista, and 7 use the Lucida Console font, and Windows 8 and Windows Server 2012 used the Segoe UI ...