Linux交换分区的作用是（）。
- A.保存系统软件
- B.保存访问过的网页文件
- C.虚拟内存空间
- D.作为用户的主目录
正确答案及解析
正确答案
解析
本题考查Linux交换分区的作用。
当程序需要的内存比物理内存还要大的时候，无论是Windows系统，还是Linux，解决办法就是把存不下的东西转移到硬盘上的“虚拟内存”中去，尽管硬盘的速度比内存慢上很多，但是至少容量要大上很多。另外，操作系统也可以把一些很久不活动的程序转移到虚拟内存中去，留出更多的主内存给需要的程序和磁盘缓冲。Linux的交换分区的作用与Windows的虚拟内存很类似，它对提高系统的稳定性和性能方面有很大的作用。
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