Final answer:
Yes, it is possible for a process not to be stopped or killed by Ctrl+Z or Ctrl+C. When a process is running in the background or in a separate session, these keyboard shortcuts may not have an effect on it.
Step-by-step explanation:
Yes, it is possible for a process not to be stopped or killed by Ctrl+Z or Ctrl+C. When a process is running in the background or in a separate session, these keyboard shortcuts may not have an effect on it. Additionally, some programs or processes may be designed to handle these signals and ignore them.
For example, in the Linux operating system, a process can be started with the 'nohup' command to make it immune to Ctrl+Z and Ctrl+C signals. The 'nohup' command allows a program to keep running even after the user has logged out.
In Windows, some processes can be set to run as a service, which means they operate independently of the user session and cannot be stopped or killed by Ctrl+Z or Ctrl+C.