Multiple choice

Which of the following processes has the PID 1?

  1. Kernel

  2. UNIX

  3. Init

  4. Shell

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The init process (PID 1) is the first userspace process started by the kernel during boot. It adopts orphaned children and manages system services. The kernel itself doesn't have a PID. UNIX is an operating system, not a process. Shell processes are created by init or user login, not assigned PID 1.