Embedded Engineer Examination Knowledge Point Summary micro-kernel structure

In the structure design of the operating system, the micro-kernel structure represents the

A) Monolithic structure
B) Hierarchical structure
C) Distributed architecture

D) client/server architecture
Micro-kernel refers to the operating system structure of memory management, device management, file system and other advanced services to separate from the kernel as far as possible, into several independent non-core modules, while the kernel only retains a small amount of the most basic functions, so that the kernel becomes concise and reliable, so called micro-kernel.
The basis of micro-kernel implementation is the logical function division of the operating system theory level. Several major functional modules are theoretically independent of each other, forming a more obvious boundary, the advantages of which are as follows:
· Fully modular, can independently replace any module without affecting other modules, so as to facilitate the third-party development, design modules.
· Unused module functions do not need to be run, thus greatly reducing the memory requirements of the system.
· With high portability, in theory, only a separate micro-core part of the transplant modification can be. Because the size of the microkernel is usually small and does not affect each other, the amount of work is minimal.

In a microkernel operating system, the kernel refers to a well-designed part that implements the most basic core functions of the modern OS. The microkernel is not a complete OS, but only the most basic part of the operating system, which is typically used to:① Implementation of the hardware closely related to the processing;② to achieve some basic functions;③ is responsible for communication between the client and the server . they simply provide an important basis for building a generic OS, which ensures that the operating system kernel is made small.

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

Embedded Engineer Examination Knowledge Point Summary micro-kernel structure