Unix 面试题与答案

Question: How the Kernel handles the fork() system call in traditional Unix and in the System V Unix, while swapping?

Answer: Kernel in traditional Unix, makes the duplicate copy of the parent?s address space and attaches it to the child?s process, while swapping. Kernel in System V Unix, manipulates the region tables, page table, and pfdata table entries, by incrementing the reference count of the region table of shared regions.