Asked relevant knowledge when the operating system Interview

The difference between the user mode and kernel mode, the specific mode switching:

①https://blog.csdn.net/shanghx_123/article/details/83151064

②https://blog.csdn.net/ddna/article/details/4941373

Physical address, logical address, and address conversion process (virtual memory, paged memory management section):

https://www.cnblogs.com/felixfang/p/3420462.html

The figure below shows the learned knowledge of the above-mentioned address translation, it's a little summary of conduct, we have been prepared in time memories