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  2. User space and kernel space - Wikipedia

    en.wikipedia.org/wiki/User_space_and_kernel_space

    A modern computer operating system usually uses virtual memory to provide separate address spaces called user space and kernel space. [a] Primarily, this separation serves to provide memory protection and hardware protection from malicious or errant software behaviour. Kernel space is strictly reserved for running a privileged operating system ...

  3. Kernel (operating system) - Wikipedia

    en.wikipedia.org/wiki/Kernel_(operating_system)

    The kernel is a computer program at the core of a computer's operating system and generally has complete control over everything in the system. The kernel is also responsible for preventing and mitigating conflicts between different processes. [1] It is the portion of the operating system code that is always resident in memory [2] and ...

  4. Session Manager Subsystem - Wikipedia

    en.wikipedia.org/wiki/Session_Manager_Subsystem

    The manager is responsible for starting the kernel and user modes of the Win32 subsystem. This subsystem includes win32k.sys (kernel-mode), winsrv.dll (user-mode), and csrss.exe (user-mode). Any other subsystems listed in the Required value of the HKLM\System\CurrentControlSet\Control\Session Manager\SubSystems Registry key are also started.

  5. General protection fault - Wikipedia

    en.wikipedia.org/wiki/General_protection_fault

    A general protection fault ( GPF) in the x86 instruction set architectures (ISAs) is a fault (a type of interrupt) initiated by ISA-defined protection mechanisms in response to an access violation caused by some running code, either in the kernel or a user program. The mechanism is first described in Intel manuals and datasheets for the Intel ...

  6. ntoskrnl.exe - Wikipedia

    en.wikipedia.org/wiki/Ntoskrnl

    ntoskrnl.exe (short for Windows NT operating system kernel executable ), also known as the kernel image, contains the kernel and executive layers of the Microsoft Windows NT kernel, and is responsible for hardware abstraction, process handling, and memory management. In addition to the kernel and executive layers, it contains the cache manager ...

  7. Microsoft Data Access Components - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Data_Access...

    Microsoft Data Access Components. Microsoft Data Access Components ( MDAC; also known as Windows DAC) is a framework of interrelated Microsoft technologies that allows programmers a uniform and comprehensive way of developing applications that can access almost any data store. Its components include: ActiveX Data Objects (ADO), OLE DB, and Open ...

  8. Microsoft POSIX subsystem - Wikipedia

    en.wikipedia.org/wiki/Microsoft_POSIX_subsystem

    The runtime environment of the subsystem is provided by two files: psxss.exe and psxdll.dll. A POSIX application uses psxdll.dll to communicate with the subsystem while communicating with posix.exe to provide display capabilities on the Windows desktop. The POSIX subsystem was replaced in Windows XP and Windows Server 2003 by "Windows Services ...

  9. Microsoft Access - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Access

    Microsoft Access. Microsoft Access is a database management system (DBMS) from Microsoft that combines the relational Access Database Engine (ACE) with a graphical user interface and software-development tools. It is a member of the Microsoft 365 suite of applications, included in the Professional and higher editions or sold separately.