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Windows nt 0 Summary Based on articles written by Mark Russinovich
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| bet | 1/13 | | Sana | 21.03.2017 | | Hajmi | 455.24 Kb. | | #1031 |
Windows NT 4.0 Summary
Based on articles written by Mark Russinovich
Windows NT Architecture Overview
The Windows NT architecture has evolved steadily since NT’s introduction in 1988. The following diagram illustrates the principal components of the operating system and their relative places in the system architecture. A description of the key Kernel Mode components follows.
Similar to other operating systems, applications executing in NT’s User Mode have no direct access to hardware and only restricted access to memory. All components that reside in Kernel Mode address space have direct access to all hardware and memory.
The services invoked in kernel mode are known as NT’s native API. This API is made up of about 250 functions that NT’s operating systems access through software-exception system calls. Software-exception system calls cause a switch from user mode to kernel mode. To carry out work, system services call on functions in one or more components of NT’s Executive (one or more of the 250 functions mentioned above) each component in the executive
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