某计算机系统页面大小为4K，进程P的页面变换表如下图所示。若进程P要访问逻辑地址25EFH（十六进制），那么经过地址变换后物理地址应为（ ）。
- A.15EFH
- B.35EFH
- C.45EFH
- D.65EFH
正确答案及解析
正确答案
解析
根据题意，页面大小为4K，逻辑地址为十六进制25EFH其页号为2，页内地址为5EFH，查页表后可知页帧号（物理块号）为4，该地址经过变换后，其物理地址应为页帧号4拼上页内地址5EFH，即十六进制45EFH。
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