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Q. Describe the three main architectural layers of Windows XP?
Answer: (1) The HAL (Hardware Abstraction Layer) creates operating system portability by hiding hardware differences from the upper layers of the operating system. Administrative details of low-level facilities are provided by HAL interfaces. HAL presents a virtual-machine interface that is used by the kernel dispatcher, the executive and device drivers.
(2) The kernel layer provides a foundation for the executive functions and user-mode subsystems. The kernel remains in memory and is never pre-empted. Its responsibilities are thread scheduling and interrupt and exception handling low-level processor synchronization and power failure recovery.
(3) The executive layer provide a set of services used by all subsystems object manager virtual memory manager or process manager and local procedure call facility as well as I/O manager, security monitor and plug-and-play manager or registry and booting.
Q. How Program execute in operating system? Program execution- The operating system fills the contents (or sections) of a file into memory as well as begins its execution. A us
The drawbacks of fixed partitioning are: The number of partitions are précised at system generation time limits the number of active processes in the system. For the re
Q. Explain some of the ways an application can use memory via the Win32 API. Answer: (1) Virtual memory offers several functions that allow an application to reserve and rele
please help us to write a code in c for tree directory structures.
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Define the Division of Labour between Client and Server Given our definition of client - server as the interaction between dispersed application logic components it must be not
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What are race conditions? Race conditions are problems that take place due to the sharing of the same file by several processes. In such a case none of the processes is able to
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